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2nd Annual Women in Physics
Canada Conference
Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada
August 1st – 4th, 2012 at the University of British Columbia, Vancouver, Canada
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////////// Table of Contents
Table of Contents Table of Contents .............................................................................................................................................................. 2 I. Conference Overview............................................................................................................................................... 3 II. Conference Program ................................................................................................................................................ 3 III. Plenary Speakers ...................................................................................................................................................... 7 IV. Panellists ................................................................................................................................................................ 10 V. Parallel Talk Abstracts ............................................................................................................................................ 12 VI. Poster Abstracts ..................................................................................................................................................... 20 VII. Conference Participants ......................................................................................................................................... 26 VIII. TRIUMF Safety Information.................................................................................................................................... 28 IX. Wireless Internet connection ................................................................................................................................. 29 X. About UBC .............................................................................................................................................................. 29 XI. Accommodations.................................................................................................................................................... 30 XII. Directions ............................................................................................................................................................... 31 XIII. Eating on and near Campus.................................................................................................................................... 33 XIV. Shopping on campus .............................................................................................................................................. 36
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Conference Overview
I. Conference Overview The conference is aimed at women (primarily undergraduate and graduate students, as well as early postdocs) working in all research areas of physics. The conference will include invited plenary physics talks, a visit to the TRIUMF laboratories, various panel discussions dealing with issues relevant to succeeding in education and research, as well as the opportunity for students to present their research results through posters and talks.
The goals of the conference are to help in building a strong community of Canadian women physicists, sharing research results and ideas, raising awareness of careers in science and technology, and working towards increasing the participation of women in physics in Canada.
CONTACT INFO: www.phas.ubc.ca/~wipc2012
CONFERENCE ORGANIZERS: Marjorie Gonzalez (UBC Physics grad student) Gabriele Hodgson (UBC Physics undergrad student) Natasha Holmes (UBC Physics grad student) Chloe Malbrunot (recent UBC Physics grad student, now post-‐doc) Andrea Marshall (UBC Electrical Engineering undergrad student) Janis McKenna (UBC Physics faculty) Justine Munich (UBC Physics undergrad student) Trisha Roberson (UBC Physics undergrad student) Tanya Roussy (UBC Engineering Physics undergrad student) Theresa Liao (UBC Physics Outreach Coordinator)
SPECIAL THANKS: Mary-‐Ann Potts (UBC): IT support, especially website, registration, abstract submission Lara Thompson (Postdoc, MIT): Logo Design Jennifer West (PhD student, Univ. of Manitoba): Poster Design Kendall Mahn (Postdoc, TRIUMF): Advertising
II. Conference Program
WEDNESDAY, AUGUST 1ST, 2012
5:00pm Opening Reception and BBQ
(Hennings Courtyard)
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Conference Program
THURSDAY, AUGUST 2ND, 2012
8:45am Introductory Remarks (IBLC 182)
9:00am Plenary Talk (IBLC 182)
Patricia Mooney: “Semiconductors: New Materials and New Applications of Old Materials” Convenor: Tanya Roussy
10:00am Coffee Break
Parallel Session I Talks are 10 minutes, following by 2 minutes discussion
10:30am
IBLC 185 Convener: Andrea Marshall, AV: Janis McKenna
10:30am Yue Ding: Theory of Resistive Geodesic Acoustic Mode with Experimental Investigation in STOR-‐M Tokamak
10:42am Sophie Berkman: Measuring the Cherenkov Light from Charged Pions in Water
10:54am Dorothea vom Bruch: The TRIUMF PIENU Experiment
11:06am Corina Andreoiu: Electron Capture Branching Ratio Measurement of 116In Using the TITAN Facility
11:18am Tegan MacDonald: High Precision Q-‐value Measurements for 0vBB-‐Decay Candidates
11:30am Jiae Kim: The Fine-‐Grained Detectors performance and Michel electron tagging for T2K
11:42am Annika Lenarz: Electron-‐capture branching ratio measurements of the odd-‐odd intermediate nuclei in double-‐beta decay at the TITAN ion trap facility
IBLC 182 Convener: Sarah Burke, AV: Tanya Roussy
10:30am Hilary Noad: Scanning SQUID measurements of delta-‐doped SrTiO3
10:42am Sonia Milbradt: The pairing symmetry of organic superconductors -‐ new progress on a contentious issue
10:54am Stephanie Grothe: The Local Properties of Superconducting LiFeAs: From the Pure Crystal to the Influence of Defects
11:06am Natalie Murphy: Microwave measurements of vortex dynamics in the heavy fermion superconductor CeCoIn5
11:18am Dorna Niroomand: Spin dynamics in an ultra-‐cold Bose gas
11:30am Laleh Mohtashemi: THz conductivity of MnSi
11:42am Fatemeh Rostamzadeh Renani: Theoretical approach to the single molecule nano-‐magnet transistor design problem
12:00pm Lunch
1:30pm Panel Discussion I (IBLC 182)
Physics careers outside academia: Laura Blomeley, Sandy Eix, Reena Meijer-‐Drees, Patricia Mooney Moderator: Marina Milner-‐Bolotin
3:00pm Coffee Break
3:30pm
Plenary Talk (IBLC 182) Samar Safi-‐Harb: “Supernova Remnants as Cosmic Laboratories for Probing our Origins and Studying the Physics of Shocks
and the Extreme” Convener: Ingrid Stairs
4:30pm Travel and Set-‐up for Poster Session
5:30pm Poster Session at TRIUMF
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Conference Program
FRIDAY, AUGUST 3RD, 2012
8:45am
9:00am Plenary Talk (Henn 201)
Toni Schmader: “How Stereotypes Stifle Performance: Identifying the Problem and Finding Solutions” Convener: Marjorie Gonzalez
10:00am Coffee Break
Parallel Session II Talks are 10 minutes, following by 2 minutes discussion
10:30am
Henn 201 Convener: Natasha Holmes, AV: Andrea Marshall
10:30am Tania Wood: Recent Results from the IceCube Neutrino Observatory and DeepCore
10:42am Sarah Nowicki: Determing the Neutrino Mass Hierarchy with IceCube
10:54am Jennifer Pore: Utilizing the Beta Decay of 116In to find weak transitions at low energies of 116Sn
11:06am Mehrnoosh Tahani: Silicon Photomultiplier Detectors on the Search for Exotic Hybrid Mesons at GlueX
11:18am Carolina Romero-‐Redondo: Ab initio calculations in three-‐body cluster systems
11:30am Sonia Bacca: Ab initio theory for nuclei
11:42am Sayeh Rajabi: Toward finding an MHV-‐expansion for Gravity Scattering Amplitudes
Henn 202 Convener: Marjorie Gonzalez, AV: Justine Munich
10:30am Nasrin Mostavi Pak: Atmospheric Leak Detection of Carbon Dioxide from Carbon Capture and Storage Sites
10:42am Sepideh Khosravi: Core sunlighting system, illuminating building with sunlight
10:54am Sarah Purdy: Plasma ion implantation for bandgap engineering
11:06am Sherry Leung: Trace Components in Lipid Membranes
11:18am Marisa Smith: State of the art investigation into Photodynamic Therapy agents.
11:30am Jen Moroz: Estimation of Tissue Enhancement from Radial MR images
11:42am Cathryn Parsons: Optimization of the Monocular Indirect Ophthalmoscope
12:00pm Lunch
(Optional: Mommies in Physics Lunch – Location TBD)
1:30pm Panel Discussion II (Hennings 201)
Gender issues in physics and sciences: Elizabeth Croft, Brenda Matthews, Toni Schmader Moderator: Janis McKenna
3:00pm Coffee Break
3:30pm Plenary Talk (Hennings 201)
Anne Broadbent: “Making and breaking codes -‐ a tale of quantum cryptology” Convener: Natasha Holmes
4:30pm Prep and travel for Banquet
6:00pm Banquet at Sage Bistro
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Conference Program
SATURDAY, AUGUST 4TH, 2012
8:45am
9:00am Plenary Talk (Henn 201)
Anadi Canepa: “Our window on the Universe: the Large Hadron Collider” Convener: Justine Munich
10:00am Coffee Break
Parallel Session III Talks are 10 minutes, following by 2 minutes discussion
10:30am
Henn 201 Convener: Tanya Roussy, AV: Natasha Holmes
10:30am Gholnoosh Bizhani: Cooperativity and discontinuous percolation transitions in complex systems
10:42am Michelle Przedborski: XY Model on a Fractal Lattice: Monte Carlo Simulations
10:54am Jessica Campbell: Research and Development for a Scintillating Fiber Coordinate Detector for High-‐Energy Electrons
11:06am Marina Milner-‐Bolotin: Are you thinking of a physics teaching career? How to prepare for a successful job interview.
11:18am Cynthia Heiner: Re-‐branding reading assignments
11:30am Natasha Holmes: Developing analysis skills through invention
11:42am Li-‐Hong Xu: Physics Circle to Encourage Girls in Physics
Henn 202 Convener: Kristin Woodley, AV: Marjorie Gonzalez
10:30am Grace Dupuis: Top Quark Forward-‐Backward Asymmetry in R-‐Parity Violating Supersymmetry
10:42am Nafisa Tasneem: Precision Measurement of Leptonic Forward Backward Asymmetry
10:54am Mercedes Martinson: Compton Scattering from Deuterium Nuclei
11:06am Alysson Vrielink: RF Deflector Cavity for ARIEL e-‐LINAC Bunch Length Measurement
11:18am Naomi Galinski: Lifetime Measurement of the 6.79 MeV state in 15O
11:30am Samantha Lawler: Massive Asteroid Belts in Kepler Exoplanet Systems
11:42am Reka Winslow: Observations of Mercury's northern cusp region with MESSENGER's Magnetometer
12:00pm Group Photo (Front steps of Hennings)
12:15pm Lunch
1:30pm Panel Discussion III (Hennings 201)
Transitions through academia: Anne Broadbent, Sarah Burke, Cynthia Heiner, Kristin Woodley Moderator: Sandy Eix
3:00pm Coffee Break
3:30pm Plenary Talk (Hennings 201)
Anja Lanz: “Don't Let Statistics Stop you” Convener: Janis McKenna
4:00pm Closing Remarks
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Plenary Speakers
OPENING RECEPTION AND BBQ To kick off the conference, we will be barbecuing some hot dogs, burgers and veggie burgers outside of Hennings. This will be an opportunity to register, meet with conference participants and organizers, and enjoy some nice Vancouver sunshine (fingers crossed!). We will have a few activities planned to break the ice, and speakers will also have the chance to load their talks for the parallel sessions on the conference computers.
POSTER SESSION AND WINE & CHEESE TRIUMF (The Tri-‐University Meson Facility), Canada's national laboratory for particle and nuclear physics located on the UBC campus, will be hosting the Poster Session and catering a wine and cheese event. Each participant will be offered one drink ticket. There will also be a cash bar and various appetizers located around the posters. A tour of the facility will leave from the main foyer every 30 minutes starting at 6pm, with the last tour leaving at 7.30pm. Each tour lasts about 50 minutes and can only take 15 participants. There are a few safety notices regarding the tour on page 28. Please consult this information in advance if you plan to participate in a tour.
MOMMIES IN PHYSICS LUNCH Calling all physics moms and anyone interested in meeting physicists who are parents. Bring your lunch to this informal meeting where we can talk about the challenges and joys of dividing our time between parenthood and physics. Location TBD.
BANQUET The final banquet will be held at Sage Bistro on the UBC campus, an airy European style brasserie with floor to ceiling windows overlooking the beautiful mountain and ocean view. Each participant will be provided with one complimentary beverage and can choose an entrée from the menu below:
Appetizer Salad Arugula, Roasted Beets & Goat Cheese with Champagne Vinaigrette Entrée Pan Seared Wild Salmon Baby Spinach Risotto, Seasonal Vegetable, Lavender Butter Sauce Vegetarian Entrée Butternut Ravioli, Granny Smith Apple, Arugula, Cinnamon Cream Dessert New York Cheesecake Coffee/Tea/Decaf
The banquet will begin at 6pm and dinner will be served at 6.45pm. At 8pm, there will be dessert and coffee service as well as an invited talk by Judi Hess, whose biography can be found on page 8.
III. Plenary Speakers ANNE BROADBENT (INSTITUTE FOR QUANTUM COMPUTING) Friday, August 3rd, 3.30-4.30pm, Henn 201
Making and breaking codes -‐ a tale of quantum cryptology For centuries, the quest for secret communications has been an ongoing battle between codemakers and codebreakers. While quantum computers could completely break the current technology used to secure Internet transactions, quantum key distribution provides confidential communications based only on the laws of quantum mechanics. Have the codemakers finally won the final battle? Tune it to find out.
Biography Anne Broadbent is a post-‐doctoral researcher at the Institute for Quantum Computing at the University of Waterloo and holds a Junior Fellowship from the Canadian Institute for Advanced Research (CIFAR). In 2011, she completed an NSERC Postdoctoral Fellowship, also at the Institute for Quantum Computing. She received her Ph.D. and M.Sc. from the Université de Montréal and holds a B.Math from the University of Waterloo. Anne has been recognized with numerous awards and honours during her academic career, including the 2009 NSERC Doctoral Prize and the 2010 John Charles Polanyi Prize. Anne is currently researching a variety of quantum protocols, with the goal of devising and implementing secure and efficient methods for information processing within a network of quantum computers, as well as giving us a better understanding of the physical world as predicted by quantum mechanics.
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Plenary Speakers
ANADI CANEPA (TRIUMF) Saturday, August 4th, 9.00-10.00am, Henn 201
Our window on the Universe: the Large Hadron Collider What is the Universe made of? What is the nature of matter? Why there is more matter than antimatter? Are there extra dimensions of space-‐time? The Large Hadron Collider by recreating the same conditions as those soon after the Big Bang has the potential to answer these questions. We live in a time when the exploration of fundamental particles and their interactions is leading toward a revolutionary new understanding of the universe.
Biography Dr. Canepa obtained her Ph.D. in experimental particle physics from Purdue University (IN, USA) and her 'laurea' from the University of Padova (Italy). Dr. Canepa is a Research Scientist at TRIUMF, Canada's national laboratory for particle and nuclear physics. Her research is on elementary particle physics; in particular she is specialized in analysis of proton-‐antiproton collision data produced by the Tevatron collider at Fermilab (Batavia IL, USA) and in proton-‐proton collision data produced by the Large Hadron Collider of CERN (Geneva, Switzerland). She is co-‐author of more than 350 peer-‐reviewed papers and main author of 17. She is also the author of "Search for Supersymmetry in proton-‐antiproton collisions: Hunt for chargino and neutralino at CDF", published by VDM Verlag Dr. Müller (February 11, 2009). She is a member of the CDF Collaboration (600 members) and of the ATLAS Collaboration (3000 members).
JUDI HESS (CEO AT COPPERLEAF TECHNOLOGIES INC) Friday, August 3rd, 8.00-9.00pm, Sage Bistro
Title TBA Abstract TBA
Biography Judi took on the role of CEO at CopperLeaf in August 2009. In 1995 she joined Burnaby-‐based Creo Inc. from MacDonald Dettwiler and Associates, beginning as a program manager and rising to become president in 2002, a position she held until Creo was acquired by Eastman Kodak for just under $1 Billion USD in 2005. As part of Eastman Kodak, Judi took on the role of general manager, workflow and prepress equipment; and vice-‐president of the graphic communications group. Two years later, her role was expanded to include management of a portfolio of software and start-‐up businesses and she was appointed a corporate officer and vice-‐president of Eastman Kodak and the head of Kodak Canada. (MacDonald Dettwiler, Creo, Kodak are all local high-‐tech companies which employ many physicists/engineering physicists). Judi is currently a member of the Premier's Technology Council of British Columbia and a member of the board of Acetech. Originally from Toronto, Judi and her family live in Vancouver. She holds an honours bachelor's degree in mathematics from the University of Waterloo, and is an avid downhill skier.
ANJA LANZ (AUTOPRO AUTOMATION CONSULTANTS) Saturday, August 4th, 3.30-4.00pm, Henn 201
Don't Let Statistics Stop you Do you feel discouraged if the statistics are not in your favour? It can happen some day that you find yourself in the minority. What do you do? What are your options to succeed and thrive despite the setbacks? Anja has plenty of experience in addressing these issues.
Biography Anja Lanz is an alumna of the Engineering Physics Program at UBC, a Junior Engineer at Autopro Automation Consultants, and the President of Women in Engineering (Vancouver Region). Anja has spearheaded the creation of the Women in Engineering Physics Network, was a founding member of Women in Engineering at UBC, was the chair of the first-‐ever Women in Engineering Symposium in British Columbia, and has been president of Women in Engineering (Vancouver Region) for 4 years. Anja also serves as a mentor in the YWCA Connect to Success program. She is an active member in the community empowering women, and she volunteers as a mentor in several agencies, helping women move through challenging times.
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Plenary Speakers
PATRICIA MOONEY (SIMON FRASIER UNIVERSITY) Thursday, August 2nd, 9.00-10.00am, IBLC 182
Semiconductors: New Materials and New Applications of Old Materials Abstract TBA
Biography Patricia M. Mooney is Professor and Tier 1 Canada Research Chair in Semiconductor Physics at Simon Fraser University. Prior to joining SFU Physics in 2005, she was a Research Staff Member at the IBM T.J. Watson Research Center, Yorktown Heights, NY for 25 years. Dr. Mooney is the author of over 180 publications, and also has 18 issued patents. She received two outstanding Technical Achievement Awards from the IBM Corporation in addition to several patent awards. Dr. Mooney is a Fellow of both the American Physical Society (APS) and the American Association for the Advancement of Science (AAAS) She has served on numerous boards and councils for the American Institute of Physics, NSERC Grants, APS Council, APS Executive Board and the APS Budget Committee. and has served on many APS Committees. She has been a member of the editorial board of Physical Review B, Applied Physics Letters/Journal of Applied Physics and the Journal of Materials Science: Materials in Electronics. She was recently a member of the International Advisory Board of the International Conference on Defects in Semiconductors.
SAMAR SAFI-‐HARB (UNIVERSITY OF MANITOBA) Thursday, August 2nd, 3.30-4.30pm, IBLC 182
Supernova Remnants as Cosmic Laboratories for Probing our Origins and Studying the Physics of Shocks and the Extreme Supernova explosions are among the most energetic explosions in the Universe. They enrich the interstellar medium with the elements we are made of, accelerate cosmic rays to extremely high energies, and (sometimes) leave behind neutron stars: highly compact and hot stars whose central densities are comparable to nuclear densities and whose magnetic fields can exceed the Earth's a trillion-‐fold or even much more! As such, Supernova Remnants (SNRs) serve as a laboratory to explore our origins and the physics of the extreme that is unattainable on Earth. I will present an overview of the field with focus on X-‐ray observations. In particular, I will share the excitement emerging from the discovery of a growing diversity of neutron stars and their wind nebulae, and show the wealth of physics we can learn from X-‐ray imaging and spectroscopic studies of the remnants. I will conclude with an outlook to the future of the field with the next generation of X-‐ray missions, including Astro-‐H.
Biography Prof. Samar Safi-‐Harb is an astrophysicist who researches the high-‐energy phenomena associated with supernova remnants and neutron stars. After receiving her undergraduate degree from the American University of Beirut, she spent about 10 years in the United States where she did her Masters and PhD studies at the University of Wisconsin, Madison followed by a US/National Research Council Fellowship at NASA’s Goddard Space Flight Center in Maryland. She joined the University of Manitoba as an NSERC University Faculty Award Fellow, where she established a research program in high-‐energy astrophysics and also played a major role in the development of the astronomy program. She has supervised a number of students at the undergraduate and graduate levels, the majority being women. She currently serves as a board director for the Canadian Astronomical Society. Recently she was selected to join the international science working group for the Japanese-‐led X-‐ray mission, Astro-‐H, slated for launch in 2014.
TONI SCHMADER (UNIVERSITY OF BRITISH COLUMBIA) Friday, August 3rd, 9.00-10.00am, Henn 201
How Stereotypes Stifle Performance: Identifying the Problem and Finding Solutions Despite the dismantling of institutionalized barriers to women's advancement in Science, Technology, Engineering, and Math (STEM), gender disparities remain. What is often unacknowledged is the way that environments themselves cue our cultural stereotypes that associate physics and math more with men than with women. In this talk, I will summarize some of key discoveries from the past 15 years of social psychology that have shown the existence of implicitly held stereotypes and the effect they can have on women's performance in male-‐dominated fields. I will also highlight a few of the interventions that have been most effective at combating these effects.
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Panellists
Biography Toni Schmader is a Canada Research Chair in Social Psychology and Professor at UBC. She received her Ph.D. in Social Psychology from the University of California, Santa Barbara in 1999. She spent 10 years on the faculty at the University of Arizona and has held a visiting position at Harvard University. Her research has examined how stereotypes undermine the interest and success of women in science, technology, engineering, and math. In addition, her research examines the interplay between self and social identity, particularly when one's social identity is accorded lower status or is targeted by negative stereotypes. In exploring these issues, her research draws upon and extends existing work on social stigma, social justice, social cognition, intergroup emotion, self-‐esteem, and motivation and performance.
IV. Panellists Panel I: Physics Careers Outside Academia Thursday, August 2nd, 1.30-3.00pm, IBLC 182
LAURA BLOMELEY (REACTOR PHYSICIST, ATOMIC ENERGY OF CANADA LTD.) Laura Blomeley is a reactor physicist with the Computational Reactor Physics Branch at Atomic Energy of Canada Limited (AECL), based at Chalk River Laboratories in Ontario. Her recent work includes criticality safety, code validation, and nuclear data sensitivity and uncertainty analysis. This work supports current operations of laboratory research and commercial nuclear reactors as well as research in the physics aspects of advanced reactor design concepts. Laura obtained a B.Sc. (Honours) from the University of Manitoba in 2003 and a M.Sc. from McGill University in 2007. Graduate research included time with the TITAN collaboration at TRIUMF, in Vancouver. After graduating, Laura considered further graduate studies but instead joined AECL in 2008.
SANDY EIX (SCIENCE LEARNING LEAD, SCIENCE WORLD) Sandy Eix has a BSc in Physics from Waterloo, a BEd from Queen's, and an MSc and PhD in Physics from SFU. Despite all of this, she is a relatively normal human being who has been inventing shows, programs, and exhibits at Science World for about 15 years. Her job lets her play with all sorts of science and share her discoveries with kids of all ages. Some highlights so far have included developing a great big physics gallery, running a summer camp for teachers, creating science resources for preschoolers, being interviewed on national radio, and project-‐managing Body Worlds. When she's not thinking about science education or travelling to remote corners of BC, she applies her curious mind to Cape Breton fiddle music, navigating East Vancouver by bicycle, and learning to speak French. She finds a great deal of joy in exploring the world with her young daughter, who dubbed her "la fée des expériences" (the experiment fairy).
REENA MEIJER-‐DREES (PRINCIPAL RESEARCH SCIENTIST, HONEYWELL) Reena completed her BSc in Physics (Co-‐op) in 1986 at U of Waterloo, and then did her MSc and PhD in high-‐energy physics at UBC, graduating in 1991. She worked as a postdoc for several years in academia, at a number of accelerators in Europe and finally ending up 2 km underground at the Creighton Nickel Mine in Sudbury, Ontario, watching solar neutrinos. After her husband (also a physicist) got an industry job in the telecommunications industry back in Vancouver, Reena left the itinerant academic life for a slightly more settled life in industry. Starting in 2000, she's held a variety of positions, some of which have had nothing whatsoever to do with physics. She's lived through bad office politics, layoffs, and job-‐hunting, and is currently a research physicist with Honeywell in North Vancouver, a job which does in fact require a PhD! At Honeywell, her job involves designing sensors for quality control in paper mills. She is working on her 4th patent. In her free time, Reena plays guitar with her 2 teenage sons, and advocates for car-‐free living. She got to drive a tram part-‐time during the 2010 Olympics.
PAT MOONEY (PROFESSOR OF PHYSICS, SFU) Patricia M. Mooney is Professor and Tier 1 Canada Research Chair in Semiconductor Physics at Simon Fraser University. Prior to joining SFU Physics in 2005, she was a Research Staff Member at the IBM T.J. Watson Research Center, Yorktown Heights, NY for 25 years. Dr. Mooney is the author of over 180 publications, and also has 18 issued patents. She received two outstanding Technical Achievement Awards from the IBM Corporation in addition to several patent awards. Dr. Mooney is a Fellow of both the American Physical Society (APS) and the American Association for the Advancement of Science (AAAS). She has served on numerous boards and councils for the American Institute of Physics, NSERC Grants, APS Council, APS Executive Board and the APS Budget Committee. and has served on many APS Committees. She has been a member of the editorial board of Physical Review B, Applied Physics
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Panellists
Letters/Journal of Applied Physics and the Journal of Materials Science: Materials in Electronics. She was recently a member of the International Advisory Board of the International Conference on Defects in Semiconductors.
Panel II: Gender issues in physics and science
Friday, August 3rd, 1.30-3.00pm, Henn 201
ELIZABETH CROFT (Professor and NSERC Chair for Women in Science and Engineering [BC-‐Yukon], UBC) Elizabeth A. Croft, B.A.Sc. (88, Mech, UBC), M.A.Sc (92, Mech, Waterloo), Ph.D. (95, Mech, Toronto), PEng, FEC, FASME, is Professor and NSERC Chair for Women in Science and Engineering (BC-‐Yukon) at UBC and leader of the WWEST program for women in engineering, science and technology. The primary focus of this initiative is to promote Science and Engineering as an excellent career choice for women and other under-‐represented groups, and to identify and eliminate barriers that result in attrition from these career paths. She is also the director of the Collaborative Advanced Robotics and Intelligent Systems (CARIS) Laboratory at UBC. Her research investigates how robotic systems can behave, and be perceived to behave, in a safe, predictable, and helpful manner, as well has how people interact with and understand robotic systems. Applications of this work range from manufacturing assembly to healthcare and assistive technology. As a founding instructor for the MECH2 program Elizabeth was co-‐recipient of the 2005 ASME Curriculum development award, the 2007 UBC Alfred Scow award and the 2008 Alan Blizzard Award. She is a registered Professional Engineer, Fellow of Engineers Canada (2008), Fellow of the American Society of Mechanical Engineers (2009) and member of IEEE.
BRENDA MATTHEWS (Associate Research Officer, Herzberg Institute of Astrophysics) Brenda is an Associate Research Officer at the Herzberg Institute of Astrophysics, an institute associated with in the National Research Council of Canada. Her research focusses on the field of star formation, utilizing submillimeter and millimeter radio telescopes to study various facets of the early beginnings of stars in our galaxy.
TONI SCHMADER (CANADA RESEARCH CHAIR IN SOCIAL PSYCHOLOGY, UBC) Toni Schmader is a Canada Research Chair in Social Psychology and Professor at UBC. She received her Ph.D. in Social Psychology from the University of California, Santa Barbara in 1999. She spent 10 years on the faculty at the University of Arizona and has held a visiting position at Harvard University. Her research has examined how stereotypes undermine the interest and success of women in science, technology, engineering, and math. In addition, her research examines the interplay between self and social identity, particularly when one's social identity is accorded lower status or is targeted by negative stereotypes. In exploring these issues, her research draws upon and extends existing work on social stigma, social justice, social cognition, intergroup emotion, self-‐esteem, and motivation and performance.
Panel II: Transitions through academia
Saturday, August 4th, 1.30-3.00pm, Henn 201
ANNE BROADBENT (POST-‐DOCTORAL RESEARCHER, INSTITUTE FOR QUANTUM COMPUTING) Anne Broadbent is a post-‐doctoral researcher at the Institute for Quantum Computing at the University of Waterloo and holds a Junior Fellowship from the Canadian Institute for Advanced Research (CIFAR). In 2011, she completed an NSERC Postdoctoral Fellowship, also at the Institute for Quantum Computing. She received her Ph.D. and M.Sc. from the Université de Montréal and holds a B.Math from the University of Waterloo. Anne has been recognized with numerous awards and honours during her academic career, including the 2009 NSERC Doctoral Prize and the 2010 John Charles Polanyi Prize. Anne is currently researching a variety of quantum protocols, with the goal of devising and implementing secure and efficient methods for information processing within a network of quantum computers, as well as giving us a better understanding of the physical world as predicted by quantum mechanics.
SARAH BURKE (ASSISTANT PROFESSOR OF PHYSICS, UBC) Sarah Burke is an Assistant Professor and Tier 2 Canada Research Chair in Nanoscience at the University of British Columbia, joining the departments of Physics & Astronomy and Chemistry in July 2010. Sarah completed her B.Sc. in Physics at Dalhousie University in Halifax, NS in 2002, where she was first exposed to the research environment and was introduced to the technique of Scanning
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Parallel Talk Abstracts
Probe Microscopy that she continues to apply in her own lab. She went on to pursue a M.Sc. (2005) and Ph.D. (2009) in Experimental Condensed Matter Physics at McGill University in Montreal during which she held NSERC Postgraduate and Canada Graduate scholarships. Her work there allowed her to explore, on a molecular and atomic scale, the formation of nanoscale clusters of molecules for molecular electronics. After her PhD, Sarah was awarded an NSERC Postdoctoral fellowship, which she took up at the University of California Berkeley 2009-‐2010, where she worked on exploring the electronic properties of graphene nanostructures with Scanning Tunneling Microscopy.
CYNTHIA HEINER (POSTDOCTORAL RESEARCHER AND LECTURER, UBC) Cynthia Heiner earned her BSc degree in physics at the University of New Hampshire in 2002. She first became excited about experimental physics through summer undergraduate research programs at Vanderbilt University and Columbia University. She continued to study physics in Berlin, Germany, working on experiments in solid state physics for her Masters at the Max Born Institute and atomic and molecular physics for her doctoral research on a molecular synchrotron at the Fritz Haber Institute (FHI) of the Max Planck Society. In 2010, after almost a decade in the lab, Cynthia turned her attention towards the classroom and began doing physics education research with the Carl Wieman Science Education Initiative at the University of British Columbia. She currently works as a post-‐doctoral fellow and sessional lecturer in the Physics and Astronomy department at UBC. Her research interests include investigating students' long-‐term retention of fundamental physics as well as the development of active learning course materials for use in large lectures to better engage the students and increase their understanding of physics concepts.
KRISTIN WOODLEY (POST-‐DOCTORAL RESEARCHER, UBC) Kristin Woodley is currently a post-‐doctoral researcher at UBC in astronomy. She received her Bachelor of Science (honours) at the University of Waterloo and first became excited about astronomy while completing an undergraduate research project in radio astronomy. She graduated with a Master's and PhD from McMaster University in observational astronomy studying extragalactic star clusters. Kristin is now at UBC for a postdoctoral research fellowship continuing her research in astronomy. Having been at UBC for 3 years now, she will be starting a second postdoc at the University of California Santa Cruz in September 2012 working with the SAGES (Study of the Astrophysics of Extragalactic Star clusters) collaboration.
V. Parallel Talk Abstracts PARALLEL SESSION I: THURSDAY, AUGUST 2ND, 10:30AM – 12:00PM
IBLC 185 Yue Ding (University of Saskatchewan): Theory of Resistive Geodesic Acoustic Mode with Experimental Investigation in STOR-‐M Tokamak The tokamak is a promising magnetic confinement configuration for the controlled nuclear fusion. The Geodesic Acoustic Mode (GAM) is a standing wave whose frequency is given by omega = cs/R where cs is the ion acoustic speed and R the major radius as first predicted by Winsor et al. [1]. The recent observation in T-‐10 [2], ASDEX Upgrade [3] showed that the GAMs can only exist at the edge of tokamaks [4] which cannot be explained by Winsor's GAM model based on the assumption that plasma current associated with GAM along the magnetic field vanishes. In practice, the parallel current is prohibited in tokamaks only by a large electron collision frequency which is possible at the edge of tokamak discharge where the electron temperature is low. A new model has been developed in terms of resistive ballooning formulation and an analytical expression is obtained for the resistive GAM frequency. Its dependence on the electron collision frequency and electron/ion temperature ratio has been found. A series of experiments in STOR-‐M tokamak uisng triple probe arrays were conducted to search for the resistive GAM and the preliminary results will be presented. [References: [1] Winsor et al. Phys. Fluids 11, 2448 (1968); [2] Melnikov et al. Plasma Phys. Controlled Fusion 48, S87 (2006): [3] Conway et al. Phys. Rev. Lett. 106, 065001 (2011): [4] Guzdar et al. Phys. Plasmas 16, 052514 (2009): [5] Hirose et al. Phys. Rev. Lett. 72, 3993 (1994)]. Sophie Berkman (University of British Columbia): Measuring the Cherenkov Light from Charged Pions in Water Super-‐Kamiokande is a large water Cherenkov detector designed to measure properties of neutrinos, such as neutrino oscillations. In Super-‐Kamiokande particles are identified by classifying the rings of Cherenkov light. Charged pions are one of the main backgrounds to identifying the muons produced by muon-‐neutrino interactions due to the similarity of the rings. Pions, however, undergo hadronic interactions in the water, which may affect the amount and properties of the Cherenkov light they produce and make it possible to distinguish them from muons. It is most important to understand the charged pions close to the Cherenkov threshold because many of them are produced around this momentum, where the detection efficiency is sensitive to systematic errors. A small integrating cylinder filled with water was built to measure the total Cherenkov light from charged pions in this region. This measurement will automatically incorporate the hadronic interactions and make it possible to reduce the systematic errors associated with charged pions. The first data was collected using the TRIUMF M11 beamline, and results will be presented.
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Dorothea vom Bruch (TRIUMF): The TRIUMF PIENU Experiment The PIENU experiment at TRIUMF aims to search for hints of new physics by measuring the branching ratio of pions decaying to positrons and anti-‐muons. The Standard Model predicts a value of R = 1.2352(2)E-‐4 for the branching ratio which represents a level of precision that has not been reproduced by previous experiments. Mass scales of 1000 TeV/c² can be obtained by reaching a level of precision of less than 0.01% with the PIENU experiment, which is an order of magnitude improvement over prior experiments. Comparing the experimental value to the theory at this energy scale can give insights into physics beyond the Standard Model, for example pseudoscalar interactions. In order to minimize human bias a blind analysis technique is implemented while working on the analysis. The presented results focus on data sets from the initial running period of the PIENU experiment. Corina Andreoiu (Simon Fraser University): Electron Capture Branching Ratio Measurement of 116In Using the TITAN Facility We have investigated the electron capture (EC) decay of 116In by means of in-‐trap decay spectroscopy at TRIUMF, Canada’s National Laboratory for Nuclear and Particle Physics. This technique takes advantage of the intense and isotope-‐separated radioactive beams produced at ISAC, the ion trap facility called TITAN, and seven dedicated X-‐ray detectors placed around an open-‐access Penning trap. Compared to other techniques this setup provides a relatively low background environment of ions stored in the Penning trap allowing for weak EC branching ratio measurements. The main focus of the in-‐trap decay spectroscopy program at TITAN is the measurement of weak EC branching ratios of several intermediate odd-‐odd nuclei in double beta decay. These experiments will be performed to improve our knowledge of nuclear matrix elements related to neutrinoless double beta decay, which in turn are related to one of the key questions of neutrino physics, namely the character of the neutrino, i.e., Majorana or Dirac particle. The 116In EC branching ratio measurement was motivated by the current disagreement between experimental values obtained from charge-‐exchange reactions and conventional EC/ decays.Moreover, the experiment was also used for updating and further development of the experimental set-‐up with seven Si(Li) detectors assisted by digital electronics. A description of the technique, the experimental setup, and the ongoing analysis along with GEANT4 simulations will be presented. Tegan Macdonald (University of British Columbia/TRIUMF): High Precision Q-‐value Measurements for 0vBB-‐Decay Candidates Located in Vancouver, BC, TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN) has a unique design capable of performing high precision mass measurements on both stable and exotic nuclei. These precision measurements allow TITAN to probe the frontiers of physics in the studies of fundamental symmetries, astrophysics, and nuclear structure. A particular contribution is a campaign of mass measurements on candidates for neutrinoless double beta decay (0vBB). The 0vBB process violates the lepton number conservation required by the standard model, and it would confirm the Majorana character of the neutrino. TITAN contributes to the search for 0vBB by improving the precision of the Q-‐value for the decay, directly influencing detector design in future 0vBB experiments. An overview of the TITAN experiment is presented along with preliminary results from the recent 48Ca-‐48Ti measurement. With a statistical uncertainty of 200 eV, the preliminary analysis agrees with the Atomic Mass Evaluation 2003 but it improves the precision by more than an order of magnitude over the current value of 4 keV. This measurement is discussed along with some candidates for future measurements and techniques for improving the precision. (Co-‐authors: J. Dilling, TITAN Collaboration). Jiae Kim (University of British Columbia): The Fine-‐Grained Detectors performance and Michel electron tagging for T2K The Tokai-‐to-‐Kamioka (T2K) experiment is designed for high sensitivity searches and measurement of neutrino oscillation parameters. The Fine-‐Grained Detectors (FGDs) are a key part of the T2K near detector (ND280) that provide target mass for the central tracking system and for tracking particles emerging from neutrino interactions. The primary neutrino interaction channel mode of interest at T2K is the charged-‐current quasi-‐elastic (CCQE) interaction whose kinematic properties allow neutrino energy reconstruction based on the outgoing lepton momentum. Thus it is important for ND280 to distinguish CCQE and non-‐CCQE interactions. Michel electrons resulting from the decay of pions stopping in the FGDs are a powerful tool to distinguish CCQE and non-‐CCQE interactions. Tracking of particles in the FGDs can also distinguish CCQE and non-‐CCQE interactions. In this talk, I will describe the status and performance of the various FGD event reconstruction algorithms including Michel electron tagging. Annika Lennarz (TRIUMF/University of Münster): Electron-‐capture branching ratio measurements of the odd-‐odd intermediate nuclei in double-‐beta decay at the TITAN ion trap facility The TRIUMF TITAN ion-‐trap facility consists of a unique combination of ion traps offering the opportunity to perform in-‐trap X-‐ray and gamma-‐ray spectroscopy on radioactive isotopes. The TITAN-‐EC project deals with the measurement of the electron-‐capture branching ratios (ECBRs) of short-‐lived intermediate nuclei in double-‐beta (dbb) decays, where the TITAN ion traps and the ISAC radioactive beam facility at TRIUMF are the central components. The magnetic field offers the advantage to spatially separate betas and X-‐rays. 7 SiLi detectors surround the trap perpendicular to the beam axis. ECBRs are important for evaluating the nuclear matrix elements (NME) involved in the dbb-‐decay for both, the 2-‐neutrino and the neutrinoless decay. EC branches are in most cases suppressed by several orders of magnitude relative to their beta-‐ counterparts and are either poorly known or not known at all. The beta and EC decay branches provide information about the ground-‐state wave function and many theoretical models aimed at calculating dbb-‐decay NMEs fail in reproducing simultaneously both decay properties. The TITAN-‐EC experiment is part of a larger project dealing with the experimental determination of dbb-‐decay NMEs using also hadronic charge-‐exchange reactions. Co-‐authors: ANDREOIU, C. (Simon Fraser University); BRUNNER, T. (TRIUMF); CHAUDHURI, A. (TRIUMF); CHOWDHURY, U. (TRIUMF); DELHEIJ, P. (TRIUMF); DILLING, J. (TRIUMF); ETTENAUER, S. (TRIUMF); JANG, F. (University of BC); FREKERS, D. (TRIUMF and University of Muenster); GALLANT, A. T. (TRIUMF); GROSSHEIM, A. (TRIUMF); GWINNER, G. (University of Manitoba); KWIATKOWSKI, A. A. (TRIUMF); MA, T. (Simon Fraser University); MANE, E. (TRIUMF); PEARSON, M. R. (TRIUMF); SCHULTZ, B. E. (TRIUMF); SIMON, M. C. (TRIUMF); SIMON, V. (TRIUMF)).
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IBLC 182 Hilary Noad (Stanford University): Scanning SQUID measurements of delta-‐doped SrTiO3 Two-‐dimensional superconductors are expected to show unusual behavior such as the Kosterlitz-‐Thouless vortex unbinding transition. Such effects are difficult to access since existing two-‐dimensional superconductors tend to be in the dirty limit where scattering washes out the exotic physics. In delta-‐doped strontium titanate (STO), a thin layer of electron-‐doped STO produces a low density of highly mobile electrons, symmetrically confined to two dimensions, which superconducts below 300 mK. We locally probe the magnetic properties of delta-‐doped STO in its normal and superconducting states using a scanning SQUID. Our measurements of the diamagnetic response of delta-‐doped STO as a function of temperature and backgate voltage suggest that the superconductivity is BCS-‐like with a single gap. We also find that the superfluid density can be modulated by electrostatic backgating. Due to its high mobility, superconductivity in delta-‐doped STO approaches the clean limit, making the system a promising one in which to observe vortex fluctuation physics. (Co-‐authors: J.A. Bert, B. Kalisky, K.C. Nowack, M. Kim*,C. Bell*,Y. Hikita*, H.Y. Hwang*, K.A. Moler; *SIMES, SLAC National Laboratory). Sonia Milbradt (Simon Fraser University): The pairing symmetry of organic superconductors -‐ new progress on a contentious issue Organic superconductors have proven to be an exciting low-‐dimensional “playground” for condensed matter physics since they were first synthesized in 1979. In addition to superconductivity, many other interesting phenomena can be investigated in these materials, by varying the chemical composition and applying pressure to the samples. Although they have now been studied for several decades, there still remain many fundamental questions about the quasi-‐two-‐dimensional BEDT-‐TTF based superconductors. Of particular interest is the fact that there is contradictory evidence regarding how the electrons form pairs in the superconducting state, an issue that must be resolved before any understanding of the superconducting pairing mechanism can be reached. In this talk, I will discuss microwave cavity perturbation measurements of the penetration depth and quasiparticle conductivity. I will present data that reveal a linear temperature dependence of the superfluid density, and show that this is consistent with d-‐wave pairing in the presence of disorder. Stephanie Grothe (University of British Columbia): The Local Properties of Superconducting LiFeAs: From the Pure Crystal to the Influence of Defects The superconducting compound LiFeAs is studied by scanning tunneling microscopy (STM) and spectroscopy (STS). In regions free of defects, spectra at 2 K show two nodeless superconducting gaps, homogeneous over tens of nanometers, as well as a dip-‐hump structure with an energy scale consistent with a magnetic resonance recently reported by inelastic neutron scattering. The gaps close at the bulk Tc, indicating that the surface accurately represents the bulk properties. Using the local nature of STM and STS measurements, we study how the superconducting phase is modified in the vicinity of intrinsic defects. While the most common defect only shows a bound state at the edge of the superconducting gap, most generate in-‐gap bound states that demonstrate pair breaking. Spectroscopic mapping reveals the high complexity of the real space bound state patterns. (Authors: Shun Chi, S. Grothe, Ruixing Liang, Pinder Dosanjh, W.N. Hardy, S.A. Burke, D.A. Bonn, and Y. Pennec). Natalie Murphy (Simon Fraser University): Microwave measurements of vortex dynamics in the heavy fermion superconductor CeCoIn5 Magnetic fields penetrate superconductors as a lattice of quantized tubes of magnetic flux, or “vortices". A transport current, passed through such a superconductor, exerts a transverse force on the vortex lattice. The ability to resist this motion is characterized by a “pinning" constant and the resulting dissipation by a “vortex viscosity". We have built new microwave apparatus that allows sensitive measurements of pinning constant and vortex viscosity to be made, down to temperatures of 0.08 mK, in fields up to 9 T, and at frequencies up to 20 GHz. I will present new results on the vortex dynamics of CeCoIn5, a so-‐called heavy fermion superconductor, in which strong electron-‐electron interactions cause the mass of the electron-‐like quasiparticles to increase by two orders of magnitude. CeCoIn5 is of particular interest due to its close resemblance to cuprate superconductors.My results reveal surprising new behaviour in the vortex viscosity, which, at low fields, carries unique signatures of d-‐wave quasiparticle physics, suggesting that delocalized excitations around the vortex cores are predominantly responsible for vortex dissipation in this material. Dorna Niroomand (Simon Fraser University): Spin dynamics in an ultra-‐cold Bose gas In ultra-‐cold gases at temperatures above quantum degeneracy, quantum mechanics still dominates the behavior of particles; therefore, trapped cold atom systems are excellent systems for studying quantum dynamics. We study spin dynamics and instabilities in a quantum gas above the onset of degeneracy. Using the ac Stark effect, we imprint spin structures of interest on a sample of trapped Rb gas. These spin structures can lead to the generation of spin waves and spin instabilities, such as the Castaing instability, where a strong longitudinal spin gradient is unstable to transverse perturbations. We report results on driving and observing spin waves and the Castaing instability in our system. (Co Authors: Lydia Zajiczek, Jeffrey McGuirk). Laleh Mohtahsemi (Simon Fraser University): THz conductivity of MnSi We present measurements of the low-‐frequency optical conductivity of a thin film of MnSi, using time-‐domain terahertz spectroscopy. Our measurements are consistent with the simple Drude model over the temperature range of T=10-‐300 K. A significant deviation is observed from the anomalous power law form observed previously in infrared spectroscopy. From the Drude model fits to our measurements we determined the temperature dependence of the resistivity, scattering life time, and plasma frequency. Fatemeh Rostamzadeh Renani (Simon Fraser University): Theoretical approach to the single molecule nano-‐magnet transistor design problem A molecular nano-‐magnet (MNM) is a single molecule that contains transition metal atoms that endow it with a stable magnetic moment. Transistors based on MNMs are potential candidates for spintronic devices and information storage. Knowledge of the orientation of the molecule’s
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easy axis relative to leads is important for potential spintronic applications of MNMs but it has not been experimentally controllable. Our calculations reveal the possibility of determining the easy axis orientation experimentally by means of current measurements: We find the lowest unoccupied molecular orbital (LUMO) of the Mn12-‐benzoate MNM to be on ligands, unlike the highest occupied molecular orbital which is on the Mn12 magnetic core. Therefore, we predict transport via the LUMO not to be subjected to Coulomb blockade. We predict gate controlled switching between Coulomb blockade and coherent resonant tunneling in transistors based on such MNMs. We propose that this effect can be used to identify specific experimentally realized MNM transistors in which the easy axis is approximately parallel to the direction of the current flow. (Co-‐authors: George Kirczenow).
PARALLEL SESSION II: FRIDAY, AUGUST 3RD, 10:30AM – 12:00PM
Hennings 201 Tania Wood (University of Alberta): Recent Results from the IceCube Neutrino Observatory and DeepCore The IceCube Neutrino Observatory, the world's largest neutrino detector, was completed in December 2010. With more than a cubic km of instrumented ice below South Pole Station, Antarctica, and the addition of a low energy extension called DeepCore, the observatory is sensitive to neutrinos with energies between 10GeV and 1EeV. This energy range provides a new window to study the very high energy neutrinos produced in the most violent astrophysical processes, (including gamma ray bursts, and active galactic nuclei), as well as the annihilation or decay of dark matter. Discussed will be the most recent results from this observatory's particle-‐astrophysics program. (Footnote: On behalf of the IceCube Collaboration). Sarah Nowicki (University of Alberta): Determing the Neutrino Mass Hierarchy with IceCube Neutrinos, a fundamental sub-‐atomic particle, have three mass states. Although the difference between these states has been measured, the order of the mass states remains an unknown. This neutrino mass hierarchy has two possible configurations – normal hierarchy and inverted. IceCube, the world's largest neutrino observatory, is a Cherenkov detector in the deep Antarctic ice at South Pole Station. IceCube is able to detect neutrinos with energies as low as 10 GeV using its existing infill DeepCore. Here we present the results of evaluating DeepCore's sensitivity to extracting the neutrino hierarchy from atmospheric neutrino interactions. We also consider a future infill to DeepCore, called PINGU, which would detect neutrinos with energies down to 1 GeV and thus enhance the potential neutrino mass hierarchy measurement. (On behalf of the IceCube Collaboration). Jennifer Pore (Simon Fraser University): Utilizing the Beta Decay of 116In to find weak transitions at low energies of 116Sn According to the shell model, which was created in 1949, closed shell nuclei tend to be more stable and have a spherical ground state. Even-‐even tin isotopes, such as 116Sn, have a closed proton shell at Z=50, which has caused them to be of considerable interest for decades. The 116Sn nucleus has been extensively studied in the past through fusion evaporation, coulex, neutron scattering and beta decay experiments, which have revealed a majority of the level scheme in the low energy region. However, with our advanced setup and good beam intensity we are able to see weaker transitions that can be added. The experiment was conducted at TRIUMF, Canada's National Laboratory for Nuclear and Particle Physics, in July of 2011. Indium 116 ion beams were used to populate the states in 116Sn via beta decay. The resulting gamma-‐transitions to the ground state where observed with the 8pi array consisting of 20 HPGe detectors coupled with a suite of ancillary detectors that are able to detect beta particles, conversion electrons, and measure nuclear lifetimes. We will present spectra and the enhanced level scheme found from this experiment. (Co-‐authors: C. Andreoiu1, D. S. Cross1,2, G. C. Ball2, V. Bildstein3, A. Chester1, R. Churchman2, G. Demand3, R. Dunlop3, A. B. Garnsworthy2, P. E. Garrett2, B. Hadinia2, B. Jigmeddorj2, R. Kanungo4, A. Laffoley3, A. Liblong3, B. Noakes1, C. E. Svensson3, J. L. Wood5, A. D. Varela3, P. Voss1,2, Z. Wang2, S. Yates6; 1 Simon Fraser University, 2 TRIUMF, 3 University of Guelph, 4 St. Mary’s University, 5 Georgia Institute of Technology, 6 University of Kentucky) Mehrnoosh Tahani (University of Regina): Silicon Photomultiplier Detectors on the Search for Exotic Hybrid Mesons at GlueX The GlueX project is aimed to elucidate the confinement property of the quantum chromodynamics. Silicon PhotoMultipliers (SiPM) will be the readout for the GlueX Barrel Calorimeter, a key subsystem of the detector designed for the GlueX project. (Co-‐Authors: G. J. Lolos, Z. Papandreou, A. Semenov). Carolina Romero Redondo (TRIUMF): Ab initio calculations in three-‐body cluster systems. Ab initio approaches in nuclear physics describe nuclear systems considering its nucleons as the fundamental components of the system. Their aim is to be able to reproduce the system properties from the fundamental internucleon interactions. The ab initio no-‐core shell model/resonating-‐group method (NCSM/RGM) was presented in as a promising technique that is able to treat both, structure and reaction problems in light nuclear systems. This approach combines a microscopic cluster technique with the use of realistic interactions and a microscopic description of the nucleon clusters. The method has been introduced in detail for two-‐body cluster systems and has been shown to work effectively in different systems. However, there are many interesting systems that have a three-‐body cluster conguration and therefore can not be successfully studied with a two-‐body cluster approach. In this work we outline the steps for introducing three-‐body cluster congurations to the method and present a progress report with initial calculations. (Co-‐authors: P. Navatil, and S. Quaglioni).
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Sonia Bacca (TRIUMF): Ab initio theory for nuclei Ab-‐initio nuclear theory aims at a comprehensive study of the properties of nuclei starting from strongly interacting protons and neutrons and at an understanding of their role in astrophysics. Recent progress on the description of stable and unstable helium isotopes will be presented.
Sayeh Rajabi (Perimeter Institute/University of Waterloo): Toward finding an MHV-‐expansion for Gravity Scattering Amplitudes Tree-‐level scattering amplitudes in Yang-‐Mills theory admit a Maximally-‐Helicity-‐Violating(MHV) expansion which provides a simple and efficient way of obtaining analytic formulas for S-‐matrix elements. A systematic approach to obtain the MHV expansion was introduced in 2005 by Risager. Applying Risager's technique to graviton scattering, one finds that MHV expansion breaks down already for Next-‐to-‐MHV gravity amplitudes with more than eleven particles. We call the discrepancy between physical amplitudes and the one obtained from Risager's method the "Anomaly", and compute the explicit form of the anomaly for 12-‐graviton scattering. Together with the terms of the Risager MHV expansion, the anomaly completes the first full analytic expression of the 12-‐graviton NMHV amplitude. Our technique can also be used to compute the anomaly for higher points.(Footnote: This talk is based on arXiv:1205.3500v1[hep-‐th] in collaboration with Eduardo Conde).
Hennings 202 Nasrin Mostafavi Pak (University of Calgary): Atmospheric Leak Detection of Carbon Dioxide from Carbon Capture and Storage Sites Carbon Capture and Storage is one of the proposed technologies to reduce anthropogenic carbon dioxide emissions. One of the concerns about the feasibility and safety of this technology is the possible atmospheric leakage of CO2 from geological storage sites. Leakage may intercept shallow aquifers, surface body waters, and atmosphere, which can be hazardous to the ecosystem and human. A system for detection and sampling air plumes of CO2 in the atmosphere near a CO2 storage site was developed in this study. Since CO2 levels naturally fluctuate due to photosynthesis, respiration and fossil fuel combustion, elevations in CO2 concentrations do not necessarily represent a leakage. It is possible to differentiate between different sources of CO2 by looking at the ratio of O2 depletion to CO2 elevation of a plume relative to the background air (∆O2∆CO2). A gas analysis system was used to measure differentials in CO2 and O2 concentrations of different plume samples relative to the background air. CALPUFF dispersion modeling was used to estimate the location and maximum concentration level of CO2 in the atmosphere, and then a CO2 leakage from a storage site was simulated by release of pure CO2 over a fixed time frame at the measurement site. ∆O2∆CO2 of the plume samples collected at the site were measured relative to background air. Obtained ∆O2∆CO2 value of leakage plume samples was then compared to measured values for plume samples of fossil fuel combustion.(Co-‐authors: Ofelia Rempillo, Ann-‐Lise Norman, David B. Layzell). Sepideh Khosravi (University of British Columbia): Core sunlighting system, illuminating building with sunlight Many people spend the majority of their working hours in electrically lit settings, despite a revealed preference for daylight illumination. Building designers have attempted to address this problem by increasing the building glazing area or creating atriums to capture more daylight, however most of them fail to illuminate the building’s core and sometimes increase the energy usage of the building as a result of poor insulation. In this talk, we describe a novel method for guiding sunlight into the interior spaces of building. The principle idea is that sun trackers which are mounted at roof level of the building follow the sun throughout the day and redirect the sunlight down to the building at the proper angle. Once all facades were showered with sunlight, light would be captured with the concentrator components mounted on the façades of the building. These concentrators would capture light and transfer it to the light pipes where light would be distributed throughout the building. Also we design a new redirector system that boost the efficiency for low latitude locations. This design would lead to both higher and more constant efficiency throughout the day. This system has the potential to substantially reduce the electrical energy required to illuminate multi-‐storied buildings while improving the quality of the illumination.
Sarah Purdy (University of Saskatchewan): Plasma ion implantation for bandgap engineering Plasma Ion Implantation is a materials processing technique that can be used to modify the surface and subsurface structure of a material. A voltage bias applied to a conductive target immersed in plasma introduces a buried layer of impurities in the existing material. This processing technique has been applied to the modification of Si to produce silicon-‐based light emitting diodes (LEDs) with some success. Bulk silicon is not a light emitter due to its indirect band gap, but any photonic integration for multicore processing needs to be silicon based in order to be scalable for mass production. The work presented here is based on introducing carbon to a silicon wafer to introduce a buried layer of SiC – a known blue light emitter. With the introduction of a buried layer with significantly different stoichiometry from the native material, we see the appearance of delaminated blister features in the layer. Sherry Leung (Simon Fraser University): Trace Components in Lipid Membranes The lipid raft hypothesis postulates that nano-‐scale lateral compositional heterogeneity in cell membranes plays functional roles. Fluorescence is a popular family of techniques used to study membranes and fluorescent probes are widely available, but only recently have systematic studies on probe behaviour begun to emerge. It was found that probe behaviour can be altered by membrane composition, probe concentration, and the presence of other probes. Our own work using deuterium nuclear magnetic resonance spectroscopy showed that trace amounts of the carbocyanine probe DiIC12 are enough to alter phase coexistence behaviour of membranes, while the equipartitioning probes, Laurdan and another carbocyanine probe DiOC18, did not affect the membrane appreciably. Most biological molecules are only present in the cell in small amounts. In addition to shedding light on why micron-‐scale phase separation are observed in model membranes, but not in living cells, our work can elucidate the mechanism by which minor cellular components function. (Co-‐authors: Jenifer Thewalt, SFU).
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Marisa Smith (Mount Allison University): State of the art investigation into Photodynamic Therapy agents PDT is the therapy of tumours that uses a photosensitive agent to selectively kill the harmful cells. The agent is injected into the body where is collected preferentially in the tumour cells over a period of time. Therefore, it will leave the rest of the body virtually unharmed, as the agents will have little toxicity. muSR is a nuclear probe and a well known experimental technique that allows the study of many different physical aspects of solids and liquids. This technique was ideal to study the effects of laser irradiation on photoactive molecules; our samples were C60 in liquid and solid solution. The combination therapies of muSR and laser irradiation have potential in the study of combination therapy using ionizing radiation and photons. The pulsed muon beam at Rutherford Appleton Laboratories (RAL) was used coupled with laser irradiation to study the molecule C60 in a solution of dodecane. (Co-‐authors: Khashayar Ghandi, Francis Pratt, Ian Clark). Jen Moroz (University of British Columbia): Estimation of Tissue Enhancement from Radial MR images Dynamic contrast-‐enhanced (DCE) MRI is a technique that non-‐invasively studies tissue vasculature. However, quantitative analysis requires knowledge of the arterial input function (AIF) -‐ a curve describing the concentration of contrast agent in blood temporally. Due to rapid contrast kinetics in blood, a high temporal resolution is required. MR projections have been shown to significantly increase the temporal resolution of the AIF, but lack information about contrast perfusion into surrounding tissue. This leakage, referred to as tissue enhancement, changes the shape of the projection profile in an unknown way, which leads to errors in the AIF. Tissue enhancement may be quantified through the construction of radial images from a set of projections. This work evaluates the potential for estimating tissue enhancement from radially reconstructed images using traditional and compressed sensing methods. Images were reconstructed, with varying numbers of projections, and compared for image quality and the presence of artifacts. Simulations were performed to investigate the ability of each technique to accurately measure tissue enhancement. (Co-‐authors: Andrew Yung, Piotr Kozlowski, Stefan Reinsberg). Cathryn Parsons (Acadia University): Optimization of the Monocular Indirect Ophthalmoscope The ophthalmoscope is an important instrument for all optometrists and ophthalmologists for characterizing the state of health of the eye. In the early 1990s the monocular indirect ophthalmoscope went out of production, and without the ongoing support of the manufacturer, the optics of the device can deteriorate over time. A local optometrist initiated this research project, with the goal being to determine the optical elements causing the aberration, and how they may be fixed. In order to understand the complex optics of the instrument and to investigate changes in the component on the end-‐use performance, an interactive computer program was developed, in the Processing environment, to model the device and an emmetropic eye using a ray optics formalism. The schematic model of the eye used was the Le Grand Full schematic eye. It was determined that the dimensions of the filament of the adapted bulb were not appropriate for the device. Information within the retinal image is lost due to the light from the extremity of the adapted bulb being cut off by the iris upon leaving the retina. To correct this issue, a new adapted bulb should be found with an overall filament length of less than 1.9 mm. This research will hopefully aid optometrists in maximizing the performance of their monocular indirect ophthalmoscopes for many years to come.
PARALLEL SESSION II: SATURDAY, AUGUST 4TH, 10:30AM – 12:00PM
Hennings 201 Golnoosh Bizhani (University of Calgary): Cooperativity and discontinuous percolation transitions in complex systems Complex systems often exhibit a sudden appearance (or breakdown) of long-‐range connectivity, which is referred to as a percolation transition. This global connectivity is usually crucial for the proper functioning of the complex system. Percolation as a continuous phase transition has been extensively studied in past, however there has been recent interest in new types of percolation processes with discontinuous transitions. Since being able to predict and control connectivity is essential to controlling the function of many complex systems, finding mechanisms that can affect the continuity of percolation transition has been of interest of physicist recently. We suggest that cooperative behavior is one of the factors that are responsible for the discontinuity of percolation transitions. To demonstrate this, we present and relate the continuous and discontinuous percolation in four different classes of problems through their cooperative behaviour: These classes are: complex contagion, compact or fractal cluster growth in random media at zero temperature, interdependencies of networks and Hamiltonian random graphs. (Authors: Golnoosh Bizhani, Seung-‐Woo Son, Claire Christensen, Maya Paczuski and Peter Grassberger; Complexity Science Group, University of Calgary) Michelle Przedborski (Brock University): XY Model on a Fractal Lattice: Monte Carlo Simulations Critical phenomena of regular translationally invariant systems are determined by the symmetry group of the Hamiltonian, spatial dimensionality of the system, and range of the interactions. Regular systems with different types of microscopic interactions share the same critical point exponents, and belong to the same universality class. The different universality classes are amazingly governed by only these few macroscopic parameters. There has been interest in whether this universality extends to systems which are of non-‐integer dimension, or to systems which are scale invariant (fractal lattices). Specifically, determining the relevance of topological properties to critical phenomena in these lattices is of interest. Monte Carlo simulations were performed for the XY model on two fractal lattices with different topological properties. The Sierpinski Pyramid was studied using the Metropolis Algorithm, and the Menger Sponge using the Wolff Cluster Algorithm. I will discuss the details of these simulations and the implications of my results for these two fractal lattices.
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Jessica Campbell (Saint Mary's University): Research and Development for a Scintillating Fiber Coordinate Detector for High-‐Energy Electrons This presentation will provide an overview of the design and technical considerations required to build a scintillating fiber ‘coordinate locator’ detector system for the BigCal detector in Hall A at Jefferson Lab (a nuclear physics research facility in Virginia operated by the US Department of Energy). The first consideration in the design phase was to gather the technical requirements associated with the operation of the detector system. These specifications were then used to research alternative options for identifying equipment and components necessary to build such a detector system. Furthermore, the options analyses looked at what could be done using local resources in order to control overall costs. At the end of this research initiative, a first-‐draft proposal, that includes technical drawings and specifications for the ‘coordinate locator’ detector system, was produced. This work was performed in parallel with other lab duties that provided orientation and hands-‐on experience with detector system technologies associated with using and testing scintillating fibers; this resulted in the construction of a small, thin plastic scintillator to support ongoing graduate research in this area being carried out by my in-‐lab supervisor, Jason Sharpe.
Marina Milner-‐Bolotin (University of British Columbia): Are you thinking of a physics teaching career? How to prepare for a successful job interview A number of physics graduates who are interested in physics teaching will be looking for a job as a physics instructor/professor at colleges and teaching universities. If you are one of them, you might want to know how to prepare for this job interview and what your potential employers might be looking for. In this talk, I will share my experiences from numerous successful and not so successful job interviews as an interviewee and as an interviewer at North American colleges and universities in order to help you get ready for your next step. We will also discuss how to prepare the teaching side of your CV such as to increase your chances of being invited to the interview. As in today’s climate, research universities pay more attention to teaching than ever before, this is also going to be relevant for the people looking for employment at research universities. Making a good impression as a potentially excellent physics teacher will help you at any job interview, so why not take it seriously? Cynthia Heiner (University of British Columbia): Re-‐branding reading assignments Traditionally, students are introduced to a topic for the first time in lecture; however, students can read the textbook before coming to class – making lecture their second exposure. Unfortunately most students do not routinely read the textbook. Our approach to encourage students to read before class has two key components: (1) the reading is very specific, and (2) a follow-‐up online quiz has questions that explicitly refer to the textbook. We have introduced such pre-‐reading assignments into a first-‐year physics course predominantly for life science majors. With this approach, 85% of students reported reading the textbook on a regular basis. I will present survey evidence that students recognized the textbook as being helpful to their learning. Natasha Holmes (University of British Columbia): Developing analysis skills through invention Laboratory learning goals are often vast and overwhelming, as students attempt to develop their ability to work with equipment, analyze data, and understand the underlying physics concepts. One particular first-‐year lab course at UBC has altered the focus of its learning goals to be primarily on data analysis methods. This is largely achieved through the use of invention activities: inquiry-‐based activities that ask students to invent a solution to a problem before being taught the expert solution. The combination of invention activities and traditional direct instruction has been shown to improve student learning and performance on transfer tasks, as compared to traditional lessons alone. Also, scaffolding the activities to take students through specific analysis or invention strategies leads them to notice more features of the data and reason at a deeper level. This talk will present results from a 4-‐month treatment of computer-‐delivered, scaffolded invention activities with instruction and practice tasks that use intelligent feedback. (Co-‐authors: Ido Roll, James Day, and Doug Bonn). Li-‐Hong Xu (University of New Brunswick): Physics Circle to Encourage Girls in Physics In other parts of Canada and globally, there are several existing programs to encourage girls in Physics at different age levels. The Physics Circle program was initiated about a year ago at the University of New Brunswick in Saint John aiming to stimulate and guide young schoolgirls’ interests in what are commonly regarded as fairly abstract and difficult Physics subjects through fun craft and teen theme-‐based activities. In partnership with the city public library, monthly theme-‐based activities are hosted at the library and have attracted many audiences. Sample themes ranging from Halloween Circus, Dancing Rainbows, the Physics Spa, Apps and Fizzix, etc., will be shared. (Co-‐authors: A Keeling and Y Hao).
Hennings 202 Grace Dupuis (McGill University): Top Quark Forward-‐Backward Asymmetry in R-‐Parity Violating Supersymmetry Recent analyses have reported an anomalously large forward-‐backward asymmetry observed in top quark pair production at the Tevatron, a discrepancy which strongly indicates the possibility of new physics. We propose the interaction of bottom squark-‐mediated top pair production, occuring in the R-‐parity violating minimal supersymmetric standard model (MSSM) as an explanation of the observed anomaly. We determine that this model can give a good fit to top quark data, both the inclusive and invariant mass-‐dependent asymmetries, while remaining consistent with the total and differential production cross-‐sections. We also consider the strong constraints from atomic parity violation, due to the effective down quark-‐Z boson vertex. We determine how this constraint may be weakened, by including top squark mixing, and for reasonable values of the top squark mass and mixing angle.
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Nafisa Tasneem (University of Victoria): Precision Measurement of Leptonic Forward Backward Asymmetry The production of muon pairs in the process e +e-‐ -‐-‐> mu +mu-‐ is sensitive to the axial vector part of the weak neutral current through coupling and to the effects of higher order QED processes and the interference. As a result there exists an asymmetric contribution to the angular distribution of final state particles. This asymmetry can be a significant tool to test the validity of the Standard Model in a precision level. A preliminary study of forward backward asymmetry is reported here measured at the centre of mass energy sqrt(s)=10.58 GeV. The data (on-‐resonance) originates from the 425 fb^-‐1 of integrated luminosity collected with the BABAR detector at PEPII. (Co-‐authors: M. Roney).
Mercedes Martinson (University of Saskatchewan): Compton Scattering from Deuterium Nuclei The goal of this work is to measure the cross section of Compton scattering events from deuteron, using photons at 60 MeV. Our project focused on building a detector apparatus, testing the coincidence circuitry, and running simulations of the events in order to determine what kind of signals we expect to see when the experiment goes full-‐scale. The detector system uses an active target containing scintillating hydrocarbon material. This will eventually be replaced with deuterocarbon material, which will act as both a source of deuteron targets as well as a scintillator to measure the energy deposited by recoiling nuclei. Our detector system was tested using cosmic rays and showed that the coincidence method was able to distinguish between different types of events, depending on coincidence level and detector geometry. Alysson Vrielink (TRIUMF): RF Deflector Cavity for ARIEL e-‐LINAC Bunch Length Measurement A 1.3 GHz single cell deflecting cavity has been designed to analyze the temporal distribution of an electron beam from 100keV and 300keV electron guns. The thermionic electron guns are being developed in support of the e-‐LINAC for the TRIUMF ARIEL project. Beam bunches are produced from a biased grid with a 650MHz RF voltage superimposed to periodically allow release of electrons. The RF deflecting cavity operates in a TM110-‐like mode, where the electrons are deflected vertically with a magnitude dependant on their arrival phase. The cavity geometry was optimized using CST Microwave Studio. The RF characteristics were confirmed and tuned through signal level measurements including the bead pull perturbation method. Beam dynamics simulations include both first order integration through on-‐axis fields and full 3D modeling. The cavity design and optimization, beam dynamics, and RF characterization will be discussed, and the commissioning status of the cavity summarized. Naomi Galinski (SFU/TRIUMF): Lifetime Measurement of the 6.79 MeV state in 15O The 14N(p,gamma)15O reaction, the slowest reaction in the CNO cycle, critically affects age estimates of globular clusters, the oldest objects in our galaxy. The largest remaining uncertainty of the reaction rate at low energies is the width of the 6.79 MeV excited state of 15O. To obtain the width we are doing a lifetime measurement since the lifetime of an excited state is inversely proportional to its width. (Co-‐authors: Sky Sjue, Barry Davids, TIGRESS collaboration).
Samantha Lawler (University of British Columbia): Massive Asteroid Belts in Kepler Exoplanet Systems We use near-‐infrared data from the Wide-‐field Infrared Survey Explorer (WISE) Mission to search for debris disks around systems that the Kepler Mission has identified as having one or more planets. We analyze 1237 stars, and find that many of them have infrared excesses that require the presence of several lunar masses of dust at ~1-‐5 AU, implying the presence of more massive versions of our asteroid belt. No strongly significant trends are seen between the presence of excess and any stellar or planetary parameters. After removing stars with probable contamination by background sources, we find that 5 out of 602 stars in our sample with data in the W3 band (wavelength=12 microns) have significant (>4.5 sigma) excesses in this band accompanied by a significant excess in the W4 (22 microns) band. This frequency of detection implies that in these systems, which possess super-‐Earths and Neptunes inside 1 AU, asteroid belts at similar distances to our solar system's asteroid belt commonly survive long enough to generate occasional short bursts of collisional activity (lasting ~1% the star's age) in which ~1% of a lunar mass is present in dust. (Co-‐author: Brett Gladman, UBC)
Reka (Moldovan) Winslow (University of British Columbia,/Planetary Science Institute): Observations of Mercury's northern cusp region with MESSENGER's Magnetometer The magnetic cusp of a planetary magnetosphere allows solar wind plasma to gain access to the planet’s magnetosphere and, for Mercury, the surface. From measurements by the MESSENGER Magnetometer we have characterized the magnetic field in the northern cusp region of Mercury. The first six months of orbital measurements indicate a mean latitudinal extent of the cusp of ~11°, and a mean local time extent of 4.5 hrs, at spacecraft altitudes. From the average magnetic pressure deficit in the cusp, we estimate that (1.1 ± 0.6) × 10^24 protons s^-‐1 bombard the surface over an area of (5.2 ± 1.6) × 10^11 m^2 near the northern cusp. Plasma pressures in the cusp are 40% higher when the interplanetary magnetic field (IMF) is anti-‐sunward than when it is sunward. The influence of the IMF direction does not overcome the north-‐south asymmetry of Mercury’s internal field, and particle flux to the surface near the southern cusp is predicted to be a factor of 4 greater than in the north. The higher particle flux impacting the surface in the south should lead to a greater exospheric source from the south and a higher rate of space weathering than in the area of the northern cusp. (Co-‐authors: (1,2) Catherine L. Johnson, (3) Brian J. Anderson, (3) Haje Korth, (4) James A. Slavin, (5) Michael E. Purucker, (6) Sean C. Solomon; 1 University of British Columbia; 2 Planetary Science Institute; 3 The Johns Hopkins University; 4 University of Michigan; 5 NASA Goddard Space Flight Center; 6 Carnegie Institution of Washington).
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VI. Poster Abstracts Shohreh Abdolrahimi (University of Alberta): Distorted 5-‐dimensional vacuum black hole In this paper we study how the distortion generated by a static and neutral distribution of external matter affects a 5-‐dimensional Schwarzschild-‐Tangherlini black hole. A solution representing a particular class of such distorted black holes admits an RxU(1)xU(1) isometry group. We show that there exists a certain duality transformation between the black hole horizon and a stretched singularity surfaces. The space-‐time near the distorted black hole singularity has the same topology and Kasner exponents as those of a 5-‐dimensional Schwarzschild-‐Tangherlini black hole. We calculate the maximal proper time of free fall of a test particle from the distorted black hole horizon to its singularity and find that, depending on the distortion, it can be less, equal to, or greater than that of a Schwarzschild-‐Tangherlini black hole of the same horizon area. This implies that due to the distortion, the singularity of a Schwarzschild-‐Tangherlini black hole can come close to its horizon. A relation between the Kretschmann scalar calculated on the horizon of a 5-‐dimensional static, asymmetric, distorted black hole and the trace of the square of the Ricci tensor of the horizon surface is derived. (Shohreh Abdolrahimi, Andrey A. Shoom, Don N. Page) Rachel Ashley (Simon Fraser University): TIFFIN: A Twin Ionisation Chamber for Fission Fragment Investigations The path for the production of heavy elements is situated in the neutron rich region of the nuclear chart. The properties of these nuclei are important to the understanding of nucleosynthesis. Reliable experimental data concerning the existence, mass, lifetime and excitation modes of neutron-‐rich isotopes are crucial in accurately modelling these paths. Spontaneous fission is one way to produce neutron-‐rich nuclei without the need for accelerators or nuclear reactors. TIFFIN is a state-‐of-‐the-‐art, highly sensitive, compact fission fragment detection system based on a twin ionization chamber concept, with digital readout and processing for pulse shape analysis. TIFFIN's fission chambers consist of segmented electrodes and Frisch grids which, coupled with pulse shape analysis, will provide information on the atomic and mass numbers of the fragments as well as the spacial orientation of the track. In addition to independent study of spontaneous fission at SFU, TIFFIN can be interfaced with high-‐purity germanium arrays for gamma-‐ray detection, such as the 8PI or TIGRESS at TRIUMF. (R. Ashley(1), C. Andreoiu(1,3), R. Austin(2), A. Chester(1), R. Henderson(3), J. Pore(1), K. Starosta(1,3), P. Voss(1,3); (1) Simon Fraser University; (2) St. Mary's University ; (3) TRIUMF) Camille Bélanger-‐Champagne (McGill University): Measurements of charged-‐particle correlations in pp collisions using the ATLAS detector Using inelastic proton-‐proton interactions at centre-‐of-‐mass energies of 900GeV and 7TeV, recorded by the ATLAS detector at the LHC, measurements have been made of the correlations between forward and backward charged-‐particle multiplicities. Jet-‐like structure in the events is studied by means of azimuthal distributions of charged particles relative to the charged particle with highest transverse momentum in a selected kinematic region of the event. The results are compared with predictions from tunes of the Pythia and Herwig++ Monte Carlo generators, which in most cases are found to provide a reasonable description of the data. Nikki Bhatia (Mount Allison University): Analysis of the accuracy of current models of Supercritical-‐Water-‐Cooled-‐Reactors Generation IV (Gen-‐IV) reactors, are the next generation of nuclear reactors currently being researched and developed. These reactors are expected to be built by 2050 and will be superior to the current generation of reactors in sustainability, safety, and cost. While there are many types of designs being developed under the Gen-‐IV umbrella, Supercritical-‐Water-‐Cooled-‐Reactors (SCWR) are a promising design with high thermal efficiency. Current models to describe SCWR assume the density effect on radiation is negligible above critical conditions. We analyzed the reactions of two moderators, light water (H2O) and heavy water (D2O), and the reactions of their species, as it relates to this assumption. Analysis was done by studying any variation in the rate of reactions with respect to high temperatures (> 370 C) and density. Applications of this analysis are relevant to the safety of Gen-‐IV reactors. Data was analyzed from experiments done using the continuous muSR beam at TRIUMF. This beam is used to study the physical characteristics of solids and liquids using muons as a nuclear probe. Brie Cawston-‐Grant (Simon Fraser University): Defect Free, Strain-‐relaxed, InGaAs/GaAs Heterostructures We are attempting to achieve defect free, strain-‐relaxed InGaAs/GaAs heterostructures using two approaches. The In-‐Place Bonding Method is used to fabricate 10µm, 20µm, and 30µm square bonded features consisting of three layers: 20nm GaAs/60nm In(0.08)Ga(0.92)As/20nm GaAs. The layers are grown epitaxially by MOCVD on a sacrificial AlGaAs layer on a GaAs(001) substrate. As the sacrificial layer is removed by etching in an HF solution, the lattice mismatch strain between the upper InGaAs and GaAs layers is redistributed resulting in GaAs layers under tensile strain and the structure bonds to the GaAs substrate. This process creates surface regions of GaAs that have a larger lattice constant than the underlying GaAs substrate. The layer thicknesses, composition, and strain-‐relaxation of the square bonded features are measured by high resolution X-‐ray diffraction. The strain in the surface layer is also measured by micro-‐Raman spectroscopy with a spatial resolution of 1 micrometer. We are also fabricating thin free-‐standing GaAs 10 micrometer square slabs supported by an approximately 1 micron square AlGaAs pedestal, on which to grow InGaAs. The thin GaAs slabs will expand during growth to accommodate the larger lattice constant of the InGaAs layer. In both approaches the introduction of misfit dislocations to relieve lattice mismatch strain is avoided. (C0-‐authors: O. Salehzadeh Einabad, D. Lackner, D.L. Owen, S.P. Watkins, P.M. Mooney). Sahar Ghavidel (Amirkabir University of Technology): Evaluation of Crystals’ Detection Efficiency in PET Imaging Using Monte Carlo Simulation In PET, an appropriate choice of crystals along with the scatter and random coincidences correction algorithm is an important part to obtain qualified images in order to improve better diagnosis in medicine. In this study, the Bismuth Germanate (BGO), Lutetium Oxyortho Silicate (LSO), Gadolinium Silicate (GSO), and Lutetium Yttrium Oxyortho Silicate (LYSO) crystals have been deliberated to compare their special characteristics using Monte Carlo simulation as well as introducing a novel parameter as the scattering frequency. This parameter as the ratio of the number of Compton scattering to the minimum photon’s pass length in crystal is based on the random numbers, Compton scattering, the energy of photon, the material and geometry of crystal. The sensitivity of crystals as a function of the width of crystal is investigated in various photon incident angles. The simulation results have been demonstrated that at the distinct width of crystal, the detection efficiency of the BGO crystal was more than the
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other crystals in which the amount of scatter and random coincidences were decreased. Determination of the crystal material and estimation of the crystal width may be useful in collimator design to improve spatial resolution and efficiency. However, the width of crystal in various applications should be optimized with respect to the trade off among of the signal to noise ratio, the spatial and temporal resolutions, the efficiency and the untrue coincidences. Determination of the crystal material and estimation of the crystal width may be practical in collimator design to improve spatial resolution and efficiency. Jennifer Godfrey (Simon Fraser University): Measurement of the top quark pair production cross section with ATLAS in pp collisions at sqrt(s) = 7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton I report a measurement of the top quark pair production cross section in tau+lepton channels in 7TeV proton-‐proton collisions at the ATLAS experiment. The data sample used corresponds to an integrated luminosity of 2.05 fb^-‐1 collected in 2011. Events with an isolated electron or muon and a tau lepton decaying hadronically are used. In addition, a large missing transverse energy and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. To identify tau leptons, the analysis uses a multivariate technique based on boosted decision trees. Alaina Green (Lewis and Clark College): Utilizing Laser Noise from Electromagnetically Induced Transparency The optical phenomenon known as Zeeman electromagnetically induced transparency (EIT) can be used to improve current magnetometry techniques as it is highly sensitive to a magnetic field. EIT is a coherent phenomenon wherein a resonant laser field that would normally be absorbed by an atomic vapor is instead transmitted due to the presence of another resonant laser field, thus rendering the vapor transparent. Our experiment uses a “noisy” laser with a 100 MHz spread in frequency. This laser frequency noise is converted to intensity noise by the interaction between rubidium atoms and the resonant laser. Our project investigates this intensity noise which contains useful information about the atomic coherence. We present experimental results concerning the relative amplitudes and cross-‐correlation of the intensity noise found in each orthogonally polarized component of the transmitted beam. Further, we discuss the utility of this noise for characterizing atomic coherence and developing a new type of atomic magnetometer. (Coauthors: Emily Fagan and Shannon O’Leary) Amy Gryba (University of Saskatchewan): Electronic structure of pure and alkali-‐metal doped phenanthrene and anthracene using x-‐ray absorption spectroscopy The electronic structures of alkali-‐metal intercalated hydrocarbons with prevalent pi-‐electron networks were determined using x-‐ray absorption spectroscopy. Phenanthrene and anthracene (C14H10) doped with K and Na were chosen due to their similarities to the recently discovered superconducting K3Phenanthrene. Self-‐ consistent field calculations of the same systems were performed on a molecular scale and employed as a tool for comparison between experimental data and theoretical models. The intercalation of potassium into phenanthrene introduced additional electronic structure into the pi* peak of the C K-‐edge not present in the sample of pure phenanthrene. Both experimental and theoretical results for Phenanthrene doped with K suggest that the pi* bonds forming the pi-‐electron network are responsible for superconductivity. (Co-‐authors: John A. McLeod[1], Elaheh Khozeimeh Sarbisheh[1], Ernst Kurmaev[2], Jens Mueller[1], Alexander Moewes[1]; [1] University of Saskatchewan, [2] Russian Academy of Sciences). Yun Hao (University of New Brunswick): Physics Circle to Encourage Girls in Physics In other parts of Canada and globally, there are several existing programs to encourage girls in Physics at different age levels. The Physics Circle program was initiated about a year ago at the University of New Brunswick in Saint John aiming to stimulate and guide young schoolgirls’ interests in what are commonly regarded as fairly abstract and difficult Physics subjects through fun craft and teen theme-‐based activities. In partnership with the city public library, monthly theme-‐based activities are hosted at the library and have attracted many audiences. Sample themes ranging from Halloween Circus, Dancing Rainbows, the Physics Spa, Apps and Fizzix, etc., will be shared. Paige Hegadoren (Thompson Rivers University): Physical Factors Affecting Infrared Thermography as an Indicator of Body Temperature in Cattle Bovine respiratory disease (BRD) is a common and costly disease in the cattle industry with respect to both treatment costs and negative impacts on animal welfare. Elevated body temperature in cattle is an early indicator of BRD; other symptoms occur later in the course of the disease, at which time the disease may have spread. Efficient and accurate body temperature measurements are desirable for early disease detection. Infrared thermography (IRT) is a non-‐invasive procedure which uses infrared cameras to infer surface temperatures based on infrared radiation. IRT images of the eye have been used as potential indicators of body temperature in cattle, however there has often been little regard to physics in agricultural IRT studies. We studied some of the physical and environmental factors that affect IRT measurements. We found the effects of increasing camera-‐subject distance and increasing ambient wind speed to decrease the surface temperature of a subject read by the camera. IRT has the potential to be used as an indicator of body temperature, however, factors including wind speed and camera-‐subject distance must be managed to ensure repeatable and accurate temperature readings. (Co-‐authors: Mark Paetkau and John Church) Anaelle Hertz (Université de Montréal): Squeezed coherent states and the one-‐dimensional Morse, Pöschl-‐Teller and Rosen-‐Morse quantum systems The Morse potential one-‐dimensional quantum system, very close to the harmonic oscillator one, is a realistic model for studying vibrations of atoms in a diatomic molecule. We thus propose a construction of squeezed coherent states similar to the one of harmonic oscillator using ladder operators. Properties of these states are analyzed with respect to the localization in position, minimal Heisenberg uncertainty relation, the statistical properties and illustrated with examples using the finite number of states in a well-‐known diatomic molecule. Since the Pöschl-‐Teller and Rosen-‐Morse potential are also realistic models for studying vibrations, we construct the squeezed coherent states of these potentials as well in order to analyze the same properties that those of the Morse potential. We are then able to compare them. In Particular, we seek to compare the trajectories in the phase space and to liken them with their classical trajectories. (Co-‐aAuthors: Maia Angelova and Véronique Hussin).
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Donna Hohertz (Simon Fraser University): Reusable Gold Nanohole Arrays: Do They Exist? The fabrication of metallic nanohole arrays for sensing applications is not a trivial process. Ultimately, we desire either a reusable or a disposable platform. Reusability requires the ability to remove any chemical contamination and/or species used to functionalize the array’s surface while maintaining the film’s surface quality, and the array’s geometry. We investigate four methods for cleaning nanohole arrays in 100 nm Au/ 5 nm Cr films on glass substrates: sulfochromic acid, RCA1, Piranha + HCl, and Oxygen plasma . After repetitive cleaning we start to observe changes in the hole shapes, increases in surface roughness, and under etching of the chromium sticking layer. These changes cause shifts in both the shape and position of the extraordinary optical transmission resonance peaks; ultimately leading to a decrease in sensitivity. (Donna Hohertz1, Sean F. Romanuik2, Bonnie L. Gray2, Karen L. Kavanagh1 1. Physics; 2. Engineering Science; Simon Fraser University, Burnaby, BC, Canada) Fayruz Huq (Ryerson University): Photoacoustic Imaging of Red Blood Cell Aggregation Photoacoustic imaging involves the optical irradiation of samples leading to localized heating and thermoelastic expansion generating acoustic waves that can be detected by ultrasonic transducers. These sound pressure waves can be detected and analyzed in order to obtain structural and functional information of the sample being imaged. Photoacoustic imaging has been used to image tumor microvasculature as well as to estimate the oxygenation saturation level. The research focuses on studying the aggregation of the red blood cells (RBC) using photoacoustic imaging. The aggregation of RBCs is a phenomenon that causes individual RBCs to form structures resembling a stack of coins. Blood aggregation impairs the release of oxygen from the RBCs and also is a marker for some diseases like myocardial infarction. We hypothesize that analysis of the photoacoustic signals in the frequency domain will provide information about the size of the RBC aggregates as well as their oxygenation state. Anna Kwiatkowski (TRIUMF): Fingerprinting atoms: high precision mass measurements The atomic mass is a unique identifier of each nuclide, much like the fingerprint of a human, and manifests the sum of all interactions among its constituents. Hence, it provides invaluable insights into many disciplines from forensics to metrology. At TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN), Penning trap mass spectrometry is performed on exotic nuclei. The TITAN mass measurements of neutron-‐rich Ca further our understanding of three-‐body forces in nuclear structure. Measurements of superallowed beta-‐emitter, like of Rb74, allows one to probe fundamental symmetries. To identify pathways for stellar burning, the masses of neutron-‐rich Rb in the A = 100 region were determined. Advanced ion manipulation techniques and recent results will be presented. (A. Chaudhuri, U. Chowdhury, A.T. Gallant, A. Grossheim, A. Lennarz, T.D. Macdonald, M.R. Pearson, B.E. Schultz, M.C. Simon, V.V. Simon, J. Dilling)
Zahra Lotfi Mahyari (Simon Fraser University): Magnetic properties of cyanometallate coordination polymers A series of isostructural M[Ag(CN)2]3•nH2O (M = Mn, Co, Ni, FeII; Cu is similar), and Fe[Ag(CN)2](OH)•ClO4 coordination polymers were synthesized from the reaction of M(II / III) with KAg(CN)2. The structures of these materials are characterized by the combination of powder and single crystal x-‐ray diffraction techniques. These polymers consist of chains of metal centres M with Ag(CN)2 groups on both sides of the metal centre. The magnetic properties of these polymers are investigated by dc and ac magnetometry. Only weak antiferromagnetic interactions are observed in the Mn, FeII, Ni, and Cu containing samples, whereas the FeIII containing compound shows strong antiferromagnetism below approximately 12 K. On the other hand, the Co containing sample shows weak ferromagnetic coupling competing with antiferromagnetism at temperatures below 6K. The different magnetic properties in these isostructural polymers could be due to the presence of water in some samples, and the presence of OH in the FeIII containing sample. (Authors: Zahra Lotfi Mahyari(1), Jeff Sonier(1) and Daniel Leznoff(2) [(1)Department of Physics, Simon Fraser University; (2) Department of Chemistry, Simon Fraser University])
Amy MacLean (Mount Allison University): Using Particle and Engineering Physics in the Advancement of Green Chemistry. Spin-‐polarized muons are extremely sensitive magnetic probes that can be used to study reaction kinetics, mechanisms and the properties of new materials. The ability of muons to gain an electron and form muonium, a light isotope of hydrogen, allows researchers to use them to probe hydrogen reactions under a myriad of conditions. We have studied the free radical kinetics of acetone with muonium in sub-‐ and supercritical carbon dioxide. A green solvent, supercritical CO2 is an excellent alternative to traditional solvents, due to its reusability, tunable properties such as polarity and density, and the considerably low pressure and temperature conditions under which it forms compared to other supercritical fluids. It has zero impact on the ozone layer depletion, and is far less toxic to humans and the environment than conventional solvents. Solvent waste is the leading source of waste in industry, so reusable solvents are ideal for the future.As part of this project, I have designed and built a new reaction vessel for experiments featuring low-‐density and low temperature sub-‐ and supercritical CO2. This study will allow us to examine the kinetic effects of the novel solvent on the dynamics and rate of a simple yet common reaction, and through comparison with studies of the same reaction in other solvents, we will be able to detect any outstanding solvent effects, changes in reaction rate, and other interactions.
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Kayla McLean (Simon Fraser University): Superfluid density measurements of YBCO using time-‐domain terahertz spectroscopy We have determined the superfluid density of underdoped YBCO thin films as a function of temperature and frequency using time-‐domain terahertz spectroscopy. Our results are consistent with kilohertz-‐frequency mutual inductance measurements of the superconducting penetration depth on the same films, and provide the opportunity to test theories of fluctuation conductivity at higher frequencies. We describe the experimental technique, demonstrate its application to superfluid density measurements, and characterize its limiting systematic uncertainties. Marina Milner-‐Bolotin (University of British Columbia): Report on the IV-‐International Women in Physics Conference On April 5-‐8, 2011, hundreds of physics faculty, researchers, graduate and postgraduate students from all over the world attended the Fourth International Conference on Women in Physics (ICWIP) organized by the International Union of Pure and Applied Physics (IUPAP). The conference took place in a beautiful location -‐ Stellenbosch, South Africa. Canada was represented by a Canadian delegation, whose members presented papers, posters and participated in the conference panels. Canadian delegates also participated in the outreach workshop for local girls and had an opportunity to meet local physics students and teachers. The poster will report on a few highlights from the conference and will share what we learned from meeting with our international colleagues. Our goal is to encourage more Canadian delegates to attend future International Women in Physics conferences. Megan O'Brien (TRIUMF): Cryogenic Testing for TRIUMF's ARIEL E-‐Linac The ARIEL E-‐Linac at TRIUMF will contain a single Injector Cryomodule and two Accelerator Cryomodules each housing 1.3GHz RF cavities requiring liquid helium at 2 Kelvin for operation. Helium is converted from 4.5K liquid to 2.17K superfluid helium II inside the cryomodules by the 4K/2K cryoinsert. To analyze the performance of the proposed cryogenic system, an existing 141MHz test cryostat has been modified to accommodate a cryoinsert assembly. The cryoinsert will undergo three modes of testing: cooldown, heat loading, and 2K production. The test will measure the static load on the assembly and determine the system’s ability to manage a range of increased heat loads. Expected loads on the cryomodules were calculated using Comsol simulations and data from previous experiments at TRIUMF. Helium boil-‐off rates and the heat exchanger efficiency will be considered when analyzing 2K production. The feasibility of using butterfly and Joule-‐Thomson valves to regulate pressure and level in the 2K reservoir will be examined, and methods of applying the test results to the calibration of the E-‐Linac’s cryogenic system will be proposed. Brittini Ogden (Wilfrid Laurier University): Using interactive experiments and Wii for physics education and outreach JUMP (Junior University Multidisciplinary Program) is a summer program held at Wilfrid Laurier University, where students from grades 4,5,6,7, and 8 come for a 3-‐day experience and take 7 classes along with many other activities. The program hosts over 2000 students a year. As co-‐ordinator of the astronomy/physics class this year, I, along with my team, created a new interactive lesson design for the students to learn physics principles. We developed tools such as interactive experiments and an exercise using the Wii to grab the students' attention and create a fun and active learning experience for the students. Evaluations from students and teachers showed a very positive reaction to the structure, tools and design of the class. By taking advantage of new technologies and adapting to current student interests, we were able to develop a high-‐impact course that enhanced student learning and generated real interest in physics. Cathryn Parsons (Dalhousie University): Tracking Immune Cells in a Cervical Cancer Model Using Magnetic Resonance Imaging Understanding the body’s immunological response to cancer is crucial for the effective development of improved anti-‐cancer treatment. Tracking the clearance and migration of immune cells in vivo in preclinical models can help further this understanding. In this study, we will label immune cells with superparamagnetic iron oxide (SPIO) and visualize their migration using magnetic resonance imaging (MRI) techniques. The cells of interest for this study are effector T cells, specifically CD8+ cells, as well as regulatory cells, specifically myeloid derived suppressor cells (MDSC) and regulatory T cells (Treg). Mice were implanted with a C3 (cervical cancer) tumor model, and monitored throughout tumor growth. At day 28 some of the mice were terminated and cells were isolated from spleens and lymph nodes. Immune cells were incubated with SPIO for 24 hours, and injected into tumor bearing mice via the tail vein. Cells were then tracked using MRI for the next three days. MDSCs were observed to migrate to the tumor site 24 hours after injection and had cleared after 72 hours. Effector T cells were observed to collect in the inguinal lymph node draining the tumor. Currently no migration of the Treg cells has been observed. (Co-‐authors: Kim Brewer, James Rioux, Steven Beyea, Mohan Karkada)
Anisa Mary Ramia (University of Ottawa): Validating the Transition Zone Water Filter Model A well-‐known controversy in the geosciences is the debate over the distinct chemical signatures of mid-‐ocean ridge basalts and ocean island basalts and, hence, the mechanical and rheological layering of the mantle. Thus, in an attempt to reconcile geochemical with geophysical observations several “incomplete” models have been postulated and rejected. However, in a 2003 Nature paper, a new plausible model has been proposed by Bercovici and Karato which has gained some attention: the Transition Zone Water filter model. They suggest that, within the mantle, there is a transition zone between the wetter, more enriched (with respect to “incompatible” heat-‐producing elements) lower mantle and the drier, depleted upper mantle which acts as a water filter; thereby creating a thin (on the order of 10km) silicate melt layer at the 410km seismic discontinuity. Over the last decade, their model has been supported by electromagnetic and, lately, seismic data. My research is looking at determining if such a thin silicate layer could exist given current Earth (PREM) and glaciological (ICE5G) models and hence further validating the model. (Co-‐authors: Glenn Milne, University of Ottawa; Giorgio Ranalli, Carleton University) Ofelia Rempillo (University of Calgary): Dimethyl sulfide as a sources of aerosol sulphate in the Arctic atmosphere Dimethyl sulfide (DMS), a compound released by phytoplankton, is a major source of biogenic sulfate in the marine atmosphere, and has the potential to affect aerosol growth and formation by the production of sulfate, an end product of DMS oxidation. DMS, SO2 and aerosol sulfate concentrations in the atmosphere measured during the Fall 2007 and Fall 2008 cruise in the Canadian Arctic are presented. Stable isotope analysis of sulfur was used to determine the amount of SO2 and aerosol sulfate derived from DMS oxidation. A mass balance chemical box model was employed to determine if DMS oxidation could account for the observed concentrations of biogenic SO2 and aerosol sulfate. (Co Authors: A. Michelle Seguin, Ann-‐Lise Norman)
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Poster Abstracts
Heather Russell (University of Washington): Investigating student understanding of divergence and curl In a junior level electrostatics course, students are introduced to Maxwell’s equations in differential form. We are investigating whether or not students in such a class have the understanding of divergence and curl necessary to fully appreciate the consequences of Maxwell’s equations and their implications for electro-‐ and magnetostatics. Examples of our preliminary findings will be presented. (Co-‐author: Paula Heron, University of Washington) Marisa Smith (Mount Allison University): Critical studies into the safety of the Gen-‐IV project Gen-‐IV is the next generation of nuclear reactors that will be built in approximately 2050. These next generations will be the cleanest, safest most economically friendly reactors ever built. Many years of research and design have already gone into these reactors. Supercritical water cooled reactors are just a subset of the next generation of nuclear reactors as a possible design. The coolant (water) would be transitioning between high temperature and pressure water into the supercritical water phase. Essentially, we are using muSR to study the effect of radiation at these temperatures and pressures to see how the rate of the reactions are affected as well as the preferred pathway of reactions. The muSR technique is a nuclear probe that allows the study of many different physical aspects of solids and liquids. This application is related to the safety of the reactor because the species that are the products of the water reactions could ultimately cause erosion in the reactor core. The continuous beam at TRIUMF was used to study the temperature and pressure dependence of the reaction rates of water. Authors: Marisa Smith. Khashayar Ghandi, Andrew Kennedy, Chris Alcorn, Paul Percival, Jean-‐Claude Brodovitch. Stella Stylianidou (University of Washington): Identifying student difficulties with IV characteristic curves* Numerous investigations, over a period of many years, have contributed to an extensive research base on student understanding of basic DC circuits. In an ongoing effort to improve instruction in introductory E&M courses, we have broadened this research to include an in-‐depth examination of student understanding of current-‐voltage (IV) characteristic curves. The research has focused on probing the extent to which students can determine the resistance of a device from its IV curve and recognize that the IV curve is characteristic of the device. In addition, we have tried to identify some of the difficulties students have in using IV curves to make specific predictions regarding circuit behavior. Selected findings from representative pretests and post-‐tests will be presented. (Co-‐authors: David P. Smith, University of Washington; Christos P. Papanikolaou, University of Athens; MacKenzie R. Stetzer). *This work has been supported in part by the National Science Foundation under Grant No.DUE-‐1022449.
Qing Yang Tang (McGill University): Computational Analysis of Monte Carlo Generated Data Monte Carlo (MC) is a numerical technique used today for its ability to efficiently estimate integrals which are otherwise impossible to solve by generating random samplings. In particle physics, MC is often used for calculating the theoretical cross section. It is useful since integrands found in particle physics can have large fluctuations in many dimensions. Indeed, MC generated data can create next to leading order (NLO) rather than just the leading order (LO) of raw data. While LO often provides sufficient computations, NLO offers a meaningful correction that is needed in many cases. This analysis aims to characterize and understand the importance and sensitivity of different physical and computational parameters which affect this computation. In this research project, the MC samples are generated using jetPhox program, which looks at the reaction h h -‐> gamma/hadron + jet + X. Parameters, such as number of events, photon pT, and accuracy, are varied individually for each data generation. Specifically, the two parameters are analyzed: CPU time as a function of number of events and region of phase space, and distribution of smoothness and consistency as a function of calculation accuracy. The results of this research will direct towards proper and efficient usage of the generator for future analysis. Sarah Thiesson (Canadian Light Source Inc.): Medical Isotope Production Via Linear Accelerators Radioisotopes are an essential tool in medical diagnostic procedures. Technetium-‐99m is used in over 5500 medical scans a day in Canada alone, which makes Tc-‐99m the most widely used radionuclide in nuclear medicine. The Tc-‐99m isotope is derived from the decay of its parent isotope Molybdenum-‐99. Historically Mo-‐99 has been produced by the fission of U-‐235. Due to the aging of nuclear reactors a recent Mo-‐99 isotope crisis has developed. The current goal of the Canadian Light Source Medical Isotope Project is to demonstrate the technical feasibility of meeting Canada’s Tc-‐99m requirements by using linear electron accelerators to produce Mo-‐99 via the Mo-‐100 photoneutron reaction. The proposed process is expected to produce Tc-‐99m at competitive costs, and has the added benefits of eliminating the use of uranium and radioactive waste associated with fission production.Current interests of one of the authors surround Mo-‐99 yield improvement through mitigation of target corrosion and electron-‐beam energy optimization. Installation of the 35MeV demonstrator linear accelerator is underway with the purpose of testing and refining all steps of the large scale production process, and is the precursor to a national commercial facility. Yunxian Tian (University of British Columbia): Stepwise multiphoton excitation fluorescence spectroscopy for cutaneous melanin detection and evaluation The noninvasive diagnostic techniques for skin cancer detection are highly desirable nowadays. A new approach to delineate better between “benign” and “malignant” melanomas in vivo, which is the most serious skin cancer disease, is by stepwise multiphoton excitation fluorescence. Previous study has successfully demonstrated stepwise two-‐photon excitation fluorescence spectroscopy of pigmented lesions in human skin ex vivo. Another study showed that stepwise three-‐photon excitation might occur by using less expensive laser sources. We are interested in studying the mechanism of melanin structures by both stepwise two-‐photon and three-‐photon fluorescence spectroscopy and extending it to in vivo human skin spectroscopy for improving clinical diagnosis. The stepwise fluorescence system by using nanosecond laser as the excitation source has been built. The next step is measuring spectra of synthetic melanin and melanin in sepia in original powder form and in solvents. Obtain spectra of melanin from different pigmented skin lesions ex vivo and the investigate melanin-‐based fluorescence spectra in vivo. We hope Step-‐wise excitation fluorescence spectroscopy will assist physician to better distinguish malignant melanoma from benign pigmented lesions without removing tissues.
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Poster Abstracts
Janelle Van Dongen (University of British Columbia): Density measurement using trapped atoms This poster will explain a proposed pressure/density measurement technique using the loss rate of trapped atoms due to collisions with background gas. Ashley Welsh (University of British Columbia): Male and Female Undergradates' Perceptions of Factors Influencing their Academic Performance in Science The underrepresentation of females in certain science disciplines has served as an impetus for research that examines and critiques the similarities and differences between male and female students’ experiences and performance (Seymour & Hewitt, 1997; Smoot-‐Hyde & Gess-‐Newsome, 2000; Sonnert et al., 2007). Such research helps to inform faculty and administration as to how they can better meet the needs of students, and in particular, how they might improve the recruitment and retention of both females and males. Within the Faculty of Science at the University of British Columbia, a mixed-‐method study, comprised of a survey (492 respondents), 24 one-‐on-‐one interviews, and a 4-‐person focus group discussion, revealed academic, social, and personal factors that male and female undergraduates perceive as influential to their academic performance in science courses. Significant gender differences were detected with females placing more emphasis on the approachability of their instructors, assessment methods, study skills and habits, the involvement of others, and commuting as influential to their performance and experience. The dissemination of this research has already prompted research within the Faculty of Science to investigate more closely the experiences of females in particular departments such as Computer Science (CS). Furthermore, research of this nature has allowed the CS department to reassess and tailor departmental programs and luncheons to be more inviting and supportive of female students. Presenting the aforementioned data and research in a poster at the second annual conference, Women in Physics Canada will allow for networks within and outside of UBC to discuss the complex experiences of both females and males in undergraduate science programs and how to address and improve the needs of their students. Jing Fei Yu (University of Toronto): Superconducting Magnetization at high magnetic field in YBCO using Torque Magnetometry Despite more than 25 years of research there are still many mysteries associated with the cuprate high-‐temperature superconductors. For example, there are long standing arguments about the underlying physics of how superconductivity is destroyed by magnetic fields. Is the magnetic field-‐induced resistive state an ordinary metallic state in which the d-‐wave superconducting gap is suppressed; or does the field only destroy long-‐range superconducting phase coherence while the superconducting gap itself survives? In this project we measure the magnetization of YBCO crystals using the highly sensitive torque magnetometry technique. A 360 degree rotation mechanism has been designed to be mounted to the dilution fridge unit, and a procedure of mounting the crystal to the fragile piezolever has been developed. Our measurements of magnetization over the entire range of sample angle to field will positively determine if diamagnetism -‐-‐-‐ hence superconductivity -‐-‐-‐ persists in the resistive state. (Authors: J.F.Yu, A.B.Sutton, R.Liang, D.A.Bonn, W.N.Hardy, S.R.Julian ) [2] Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada [3] Institute of Metal Physics, Russian Academy of Sciences, Yekaterinburg, Russia Lydia Zajiczek (Simon Fraser University): One laser to rule them all: Cooling and studying ultracold Bose gases with a tunable wavelength tapered amplifier diode laser We describe a simple laser diode system for cooling, trapping, and manipulating the spin polarization of gases of $^{87}$Rb. These lasers that must be high powered and wavelength stabilized, which requires wavelength tunability. We investigate a tapered amplifier laser diode in an external cavity configuration to satisfy the requirements of a cooling, repumper or spin polarizing laser without making significant parameter adjustments. The external cavity is formed by a diffraction grating mounted behind the laser diode in the Littrow configuration, where light emitted from the back facet of the diode is diffracted by the grating and sent back into the diode for amplification. The laser system was capable of producing high output power over a wide tuning range with narrow linewidth in stable configurations, and we discuss attempts to frequency stabilize the laser. Niloofar Zarifi (University of Saskatchewan): A comparative study on Hybrid functional methods and mbjLDA to describe the electronic structure of YTiO3 under high pressure YTiO3 is a perovskite transition-‐metal oxide with a tetragonal structure space group Pnma. It is a ferromagnetic insulator. Calculations using the FP-‐LAPW method with the LSDA has been predicted a metallic ground state. GGA has failed to reproduce the insulating property. The electronic structures of YTiO3 under pressure have been studied with LDA+U and hybrid functional PBE and WCGGA. The U Hubbard parameter can be estimated self-‐consistently from band calculations using the linear response method or empirical parameters which optimize their values by matching calculated experimental results. The purpose of this study is to investigate whether the mBJLDA approximation will correct the shortcoming of GGA. If so, this method will be beneficial as no empirical parameters (such as the Hubbard u) are used as input.
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Conference Participants
VII. Conference Participants Name Institution Email
Shima Alagha Simon Fraser University [email protected]
Emily Altiere University of British Columbia [email protected] Corina Andreoiu Simon Fraser University [email protected] Sonia Bacca TRIUMF [email protected] Camille Belanger-‐Champagne McGill University [email protected] Sophie Berkman University of British Columbia [email protected] Nikita Bernier TRIUMF [email protected] Nikki Bhatia Mount Allison University [email protected] Golnoosh Bizhani University of Calgary [email protected] Laura Blomeley Atomic Energy of Canada Ltd. [email protected] Stephanie Bohaichuk University of Alberta [email protected] Megan Boothby Douglas College [email protected] Anne Broadbent Institute for Quantum Computing [email protected] Sarah Burke University of British Columbia [email protected] Jessica Campbell Saint Mary's University [email protected] Anadi Canepa TRIUMF [email protected] Brie Cawston-‐Grant Simon Fraser University [email protected] Elizabeth Croft University of British Columbia [email protected] Yue Ding Plasma Physics Laboratory, University of Saskatchewan [email protected] Alison Duffy University of Washington [email protected] Grace Dupuis McGill University [email protected] Sandy Eix Science World [email protected] Naomi Galinski Simon Fraser University -‐ TRIUMF [email protected] Fatima Garcia University of Calgary [email protected] Sahar Ghavidel Amirkabir University of Technology [email protected] Jennifer Godfrey Simon Fraser University [email protected] Marjorie Gonzalez University of British Columbia [email protected] Alaina Green Lewis and Clark College [email protected] Stephanie Grothe University of British Columbia [email protected] Amy Gryba University of Saskatchewan [email protected] Yun Hao University of New Brunswick [email protected] Paige Hegadoren Thompson Rivers University [email protected] Cynthia Heiner University of British Columbia [email protected] Jessie Helfrich Canadian Light Source Inc. [email protected] Anaelle Hertz University of Montreal [email protected] Judi Hess Copperleaf Technologies [email protected] Cornelia Hoehr TRIUMF [email protected] Donna Hohertz Simon Fraser University [email protected] Natasha Holmes University of British Columbia [email protected] Fayruz Huq Ryerson University [email protected] Sepideh Khosravi University of British Columbia [email protected] Jiae Kim University of British Columbia [email protected] Anna Kwiatkowski TRIUMF [email protected] Anja Lanz Autopro Automation Consultants [email protected] Samantha Lawler University of British Columbia [email protected] Ronald M. Lees University of New Brunswick [email protected] Annika Lennarz University of Muenster -‐ TRIUMF [email protected] Sherry Leung Simon Fraser University [email protected] Zahra Lotfi Mahyari Simon Fraser University [email protected] Tegan Macdonald University of British Columbia -‐ TRIUMF [email protected] Amy MacLean Mount Allison University [email protected]
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Conference Participants
Marisa Maharaj University of British Columbia [email protected] Andrea Marshall University of British Columbia [email protected] Mercedes Martinson University of Saskatchewan [email protected] Brenda Matthews Herzberg Institute of Astrophysics Brenda.Matthews@nrc-‐cnrc.gc.ca Janis McKenna University of British Columbia [email protected] Kayla McLean Simon Fraser University [email protected] Reena Meijer-‐Drees Honeywell [email protected] Sandra Meyers University of British Columbia [email protected] Sonia Milbradt Simon Fraser University [email protected] Marina Milner-‐Bolotin University of British Columbia marina.milner-‐[email protected] Faezeh Mohammadbeigi Simon Fraser University [email protected] Laleh Mohtashemi Simon Fraser University [email protected] Zahra Mokhtari Simon Fraser University [email protected] Reka Moldovan Winslow University of British Columbia [email protected] Patricia Mooney Simon Fraser University [email protected] Jen Moroz University of British Columbia [email protected] Nasrin Mostafavi Pak University of Calgary [email protected] Justine Munich University of British Columbia [email protected] Natalie Murphy Simon Fraser University [email protected] Dorna Niroomand Simon Fraser University [email protected] Hilary Noad Stanford University [email protected] Sarah Nowicki University of Alberta [email protected] Megan O'Brien TRIUMF [email protected] Alysa Obertas University of British Columbia [email protected] Brittini Ogden Wilfrid Laurier [email protected] Jihyun Park University of British Columbia [email protected] Amanda Parker University of British Columbia [email protected] Cathryn Parsons Acadia & Dalhousie University [email protected] Jannicke Pearkes University of British Columbia [email protected] Samara Pillay University of British Columbia [email protected] Sepiedeh Pirasteh Brock University [email protected] Natalia Pliner Wilfrid Laurier University [email protected] Jennifer Pore Simon Fraser University [email protected] Michelle Przedborski Brock University [email protected] Sarah Purdy University of Saskatchewan [email protected] Anum Qureshi York University [email protected] Allison Radich TRIUMF [email protected] Sayeh Rajabi Perimeter Institute, University of Waterloo [email protected] Anisa Mary Ramia University of Ottawa [email protected] Ofelia Rempillo University of Calgary [email protected] Naghmeh Rezaei Simon Fraser University [email protected] Carolina Romero Redondo TRIUMF [email protected] Fatemeh Rostamzadeh Renani Simon Fraser University [email protected] Tanya Roussy University of British Columbia [email protected] Heather Russell University of Washington [email protected] Samar Safi-‐Harb University of Manitoba [email protected] Toni Schmader University of British Columbia [email protected] Rachael Shoulder University of Washington [email protected] Marisa Smith Mount Allison University [email protected] Ingrid Stairs University of British Columbia [email protected] Stella Stylianidou University of Washington [email protected] Mehrnoosh Tahani University of Regina [email protected] Qing Yang Tang McGill University [email protected] Nafisa Tasneem University of Victoria [email protected] Sarah Thiesson Canadian Light Source Inc. [email protected] Yunxian Tian University of British Columbia [email protected] Janelle Van Dongen University of British Columbia [email protected]
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TRIUMF Safety Information
Dorothea vom Bruch TRIUMF [email protected] Alysson Vrielink University of British Columbia [email protected] Mei Wang College of New Caledonia [email protected] Ashley Welsh University of British Columbia [email protected] Tania Wood University of Alberta [email protected] Kristin Woodley University of British Columbia [email protected] Li-‐Hong Xu University of New Brunswick [email protected] Jing Fei Yu University of Toronto [email protected] Lydia Zajiczek Simon Fraser University [email protected] Niloofar Zarifi University of Saskatchewan [email protected]
VIII. TRIUMF Safety Information
At TRIUMF, your safety is a primary concern for us. In this document we have outlined some important safety information that you must review before bringing your group here. If you are bringing a large group of people, we ask that you act on some of these safety concerns prior to your group’s arrival on-site.
SIGN IN Safety regulations require that we keep track of everyone who enters the TRIUMF site. Please bring a list of all those attending the tour to give to your tour guide.
PACEMAKER/ICD WARNING Due to the magnetic fields present on the TRIUMF site, people with heart pacemakers or ICDs (implantable cardioverter defibrillators) may be at risk. Please inform your tour guide if anyone in your group has a heart pacemaker so the guide can take an alternate route.
BAGS Large bags/knapsacks are not permitted on-site. We ask, therefore, that your group does not bring any bags to TRIUMF. If bags are brought to the facility, you will be asked to leave them in your bus or car. However, cameras are allowed on TRIUMF tours.
NUMBERS Tour groups can be no larger than 15 persons. It would be beneficial to separate your party into groups of 15 or less prior to coming to TRIUMF.
CHILDREN TRIUMF forbids unsupervised children under 13 from entering the TRIUMF facility. If children under 13 are present in your group, a supervisor, parent, or guardian must accompany each of them at all times and must be responsible for their safety.
RADIATION SAFETY Tour participants must stay together with the tour guide at all times for the duration of the tour. Persons having had a nuclear medicine scan within the last week should inform their tour guide, as they are likely to set off the portal monitor when entering or leaving the site.
UPON ARRIVAL Please remind your group that they are entering an office building. As such, the noise level should remain at a minimum to allow staff to continue their work uninterrupted.
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Wireless Internet connection
IX. Wireless Internet connection Wireless internet is available for all attendees through either the Eduroam or UBC Visitor Accounts. Anyone can access UBC's VIsitor Wireless network, but it is much slower than the eduroam network, so if you have eduroam at your home institution, we encourage you to set it up.
The Eduroam network is a collaborative network that provides students, staff and faculty roaming wireless access at partner institutions. Users connect and authenticate using the same credentials as they use on Eduroam at their home institution.
In order to use Eduroam, you must register for Eduroam at your home institution BEFORE coming to Vancouver/UBC.
Conference participants visiting from an eduroam affiliated institution can access UBC's wireless internet using their own home institution’s wireless via eduroam. A list of eduroam affiliated institutions in Canada can be obtained at: https://wiki.bc.net/atl-‐conf/display/Services/Who%27s+Connected and from the USA at: www.eduroamus.org/eduroam_us_institutions Instructions on how to configure your computer to use eduroam at UBC are available from: www.it.ubc.ca/service_catalogue/internet_telephone/wireless/eduroam_wireless.html
Participants from institutions not affiliated with Eduroam can access internet via the UBC Visitor network. To connect, select "ubcvisitor" wireless network, open a web browser, and then login. For more information please visit: www.it.ubc.ca/service_catalogue/internet_telephone/wireless/visitor_wireless.html
Please note the following guidelines of UBC Policy 104 regarding internet usage:
Users are responsible for the uses to which their computing accounts are put. Users must not share the passwords to any accounts to which they have access. All users must adhere to University policies and all laws that govern the use of the university computing and communication facilities. Applicable legislation includes, but is not limited to, the Criminal Code of Canada, the B.C. Civil Rights Protection Act, the B.C. Freedom of Information and Protection of Privacy Act, and the B.C. Human Rights Code. For further information, please visit: www.universitycounsel.ubc.ca/policies/policy104.pdf
X. About UBC The conference will take place at the University of British Columbia (UBC), in the beautiful and vibrant City of Vancouver, which is surrounded by mountains.
The University of British Columbia, established in 1908, educates a student population of 50,000 on major campuses in two cities and holds an international reputation for excellence in advanced research and learning.
The largest is 30 minutes from the heart of downtown Vancouver, a spectacular campus that is a 'must-‐see' for any visitor to the city -‐-‐ where snow-‐capped mountains meet ocean, and breathtaking vistas greet you around every corner.
The Vancouver campus boasts some of the city's best attractions and recreation facilities, including the Museum of Anthropology, the Chan Centre for the Performing Arts, the UBC Botanical Garden and Centre for Plant Research, and endless opportunities to explore forested trails in the adjoining 763-‐hectare Pacific Spirit Regional Park.
If you are interested in UBC for your graduate studies, we offer a guaranteed funding package to each and every admitted graduate student and generous top-‐up supplements to students who hold an NSERC graduate PGS or CGS scholarship. For more information please visit: www.phas.ubc.ca/graduate-‐program-‐overview or the graduate program coordinator, Oliva Dela Cruz-‐Cordero by email to [email protected], by phone: (604) 822-‐4245, or drop in to Oliva's office, Hennings 333 while you're here.
-‐ Source: UBC website: www.ubc.ca
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Accommodations
-‐
XI. Accommodations On campus accommodation is located at UBC Conferences & Accommodation: www.ubcconferences.com
Totem Park Residence 2525 West Mall Vancouver, BC V6T 1W9 (Front Desk) Tel: 604 822 3304 Fax: 604 822 2833
Gage Towers 5959 Student Union Blvd., Vancouver, BC V6T 2C9 Tel: 604 822 1000 Fax: 604 822 1001
West Coast Suites 5959 Student Union Blvd., Vancouver, BC V6T 2C9 Tel: 604 822 1000 Fax: 604 822 1001
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Directions
XII. Directions BETWEEN VANCOUVER INTERNATIONAL AIRPORT AND UBC Taxi A taxi ride between UBC and the Vancouver International Airport takes approximately 30-‐45 minutes, and costs $30-‐40 one-‐way.
Black Top and Checker: 604-‐683-‐4567 Yellow Cab: 604-‐681-‐1111
Public Transit
From Vancouver International Airport to UBC by public transit:
• In YVR airport, follow signs to the Canada Line Sky-‐Train platform. You'll have to go up to Level 3 from the baggage claim area.
• Buy a single-‐journey transit ticket from the machine on the platform; it should cost $8.75 ($5.00 airport charge, $3.75 adult fare for a 2 zone trip). You can pay by credit card or cash. The first train is at 5:10am and last train is at 12:57am.
• Take the Canada Line sky train going to Waterfront to Broadway – City Hall station. Exit the station and cross both Cambie and Broadway to catch the #99 UBC B-‐line express bus on the north side of Broadway. Ride the bus until the last stop – UBC Bus Loop.
If you are staying in Gage Towers, you’ll see the three 17-‐storey, grey concrete towers (a 4-‐minute walk from the bus loop).
If you are staying at Totem residences, you’ll have an easy 12-‐minute walk westward across campus to Totem.
From UBC to Vancouver International Airport by public transit:
• Take #99 B-‐line from the main bus loop and get off at Cambie crossing Broadway (Broadway – City Hall sky
train station).
• Transfer to the Canada Line Sky Train going to the Vancouver International Airport (YVR).
It costs $8.75 to go from YVR to UBC ($3.75 + $5.00 Airport Add Fare), and $3.75 (regular fare) to go from UBC to YVR.
For more information, please visit http://www.translink.ca/ or call 604-‐953-‐3333.
FROM UBC TO DOWNTOWN VANCOUVER AND LOWER MAINLAND The UBC bus loop is located right next to the Student Recreation Centre (SRC). Diesel-‐powered buses (#25, 33, 41, 43, 44, 49, 84, 99, 258, 480) all depart from this bus loop. Other buses (trolly type busses, #4, 9, 14) depart from a smaller bus loop located right next to the War Memorial Gym on University Boulevard.
For more information about getting going from UBC to other locations in the greater Vancouver area, including bus number and corresponding routes and frequencies, visit the Trankslink Services website (http://www.translink.ca/).
The cost of an adult transit fare is $2.50 for 1 zone (within Vancouver). Weekdays after 6:30 p.m. and all day Saturday, Sunday and Holidays, a 1 zone ticket is good for all three zones (going to Burnaby, Surrey, Richmond, and other cities within the Greater Vancouver area). You can also purchase day passes ($9.00) at an authorized transit fare retailer in Vancouver, such as the Outpost at the Student Union Building, the Shoppers Drug Mart, or other convenient stores or drug marts in the University Village.
FROM UBC TO TRIUMF The #41 bus from the main bus loop will stop in front of TRIUMF after about a 6 minute ride. The bus runs about every 6 minutes during peak hours (between 5 and 6pm), every 10 minutes from 6pm – 8.30pm, and then 20 to 30 minutes later in the evening. The cost of an adult transit fare is $2.50.
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Directions
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Eating on and near Campus
XIII. Eating on and near Campus You will find UBC a good place for eating and drinking. Coffee shops, snack bars, restaurants and bars are scattered all over the campus. Within 5-‐10min walking distance to the workshop venue are plenty of places to dine.
UBC Food Services Many of the on campus dining options are run by UBC Food Services.
-‐ Source: UBC food services website: http://www.food.ubc.ca/
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Eating on and near Campus
-‐ Source: UBC Conferences & Accommodation
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Eating on and near Campus
University Boulevard Restaurants and Food Outlets University Boulevard boasts a vibrant neighbourhood feel, and features dozens of places to enjoy a sit-‐down meal, people-‐watch over coffee, or grab a quick bite on the run. Visitors will feel right at home choosing from internationally-‐recognized franchises and unique offerings from local entrepreneurs.
University Village With 2 coffee shops, 2 tea places, numerous restaurants (including 2 Japanese restaurants and 1 McDonald’s, and a food court), the University Village is another option on campus.
Restaurants at UBC Here are a few restaurants that we recommend:
$ -‐ under $10, cheap $$ -‐ $11-‐25, moderate $$$ -‐ $25-‐45, spendy $$$$ -‐ $45 and above, expensive!
$ Mio Japan 115-‐5743 Dalhousie Rd. In UBC Village, inexpensive and quick place for sushi.
$-‐$$ One More Sushi 222-‐2155 Allison Rd, on Dalhousie Rd (2nd floor); Tel 604.228.9773 In UBC Village, Second floor of the Staples building. This is a very good and inexpensive place for sushi. Recommended for lunch or dinner.
$-‐$$ Pita Pit 5717 Dalhousie Rd (In UBC Village); Tel 604.221.7488
$$ Mahony & Sons 5990 University Blvd; Tel 604.827.4444 At the intersection of Wesbrook mall and University blvd.
$$ The Point Grill Building 4 -‐ 2205 Lower Mall (Marine Drive Residence); Tel 604.822.9503 Open 11:00am -‐ 10:00pm (Daily).
$$$ Sage Bistro 6331 Crescent Road; Tel 604.822.0968 Located on campus in the building of the Peter Wall Institute; official caterer for the Workshop in Coherence in Ultracold Molecular Physics. Open for lunch only.
Restaurants near UBC (within 10 minutes from UBC by car) $ Ginger and Chili Szechuan Cuisine 4423 West 10th Ave; (604) 222-‐2223 Large portions and pretty good Chinese food. Ginger beef is the most popular dish. 5 min. on #99 – get down at Sasamat street.
$$ Burgoo Bistro 4434 West 10 Avenue, (604) 221-‐7839; www.burgoo.ca/ Serves classic comfort food, hearty meals made with traditional methods. Wait time can be long sometimes, 5 min. on #99 – get down at Sasamat street.
$$ Wolf and Hound (10 min. on #99 -‐ get down at Alma) 3617 West Broadway (take the #99 to Alma); Tel 604.738.8909; dinehere.ca/vancouver/wolf-‐and-‐hound-‐the An Irish pub with very good food and a good selection of beer.
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Shopping on campus
$$ Milestones Grill & Bar (12 min. on #4 -‐ get down at Bayswater) 2966 W. 4th Ave. -‐ one block west of Macdonald St; www.milestonesrestaurants.com/ Milestones is a good quality Canadian restaurant chain known for their steaks, rotisserie, and pasta dishes.
$$ Banana Leaf in Kitsilano-‐ Malaysian cuisine 3005 West Broadway; Tel 604.734.3005; www.bananaleaf-‐vancouver.com Good and inexpensive East Asian meals.
$$ Candia Tavern 4510 West 10th Ave; www.candiataverna.com/ Huge portions, Greek food and pizza
$$ Enigma Restaurant and Bar 4397 West 10th Ave; www.enigmavancouver.com Great atmosphere, many cuisines
$$ Dentry's Irish Grill 4450 West 10th Ave; http://www.dentrys.com/ Irish pub, occasional live Celtic music.
$$$ Provence -‐ Mediterranean Grill 4473 West 10th Avenue; Tel: 604 222 1980; www.provencevancouver.com/ Very good restaurant, only 5 min. on #99 – get down at Sasamat street.
XIV. Shopping on campus
UBC Bookstore As the largest academic bookstore in Western Canada, the UBC Bookstore carries a variety of materials for UBC’s academic community along with the community at large including: books, magazines, stationery, art supplies, sportswear, and giftware.
General interest books and specialty products such as UBC sportswear and giftware are available at the UBC Bookstore. The UBC Bookstore Computer Department is also an Authorized Reseller for Apple with a wide selection of hardware and accessories. Proceeds support student services, facilities, programming and research.
Student Union Building (SUB) CopyRight: CopyRight is your full service copy centre offering copying, printing, laminating, binding, and faxing.
The Outpost: Gift items, school supplies, greeting cards, postcards, tickets for AMS events, and UBC gear — The Outpost is your one-‐stop shopping spot in the SUB.
UBC Retail Postal Outlet: The UBC Retail Post Office is located within the Outpost student store on the concourse level of the SUB.
UBC Village The University Village has a number of service stores including a Staples office supply store, photocopying services, several restaurants (including a subterranean foodcourt), a grocery store, coffee shops, a liquor store, a newsstand, etc.
