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Vanderbilt UniversityJuly 26, 2010
Introduction to QuarkNet for the Vanderbilt University Center
Ken Cecire
University of Notre Dame
Vanderbilt UniversityJuly 26, 2010
A word from our sponsors…
• Particle physics
• Education reform
• Large Hadron Collider– Highest energy– Coldest too– On the edge of new discoveries
• More cool experiments
Introduction
Vanderbilt UniversityJuly 26, 2010
First LEP, and now LHC, are buried ~100 m below the surface
near the Swiss-French border.
Introduction
Vanderbilt UniversityJuly 26, 2010
Check out the
US /LHC Event of the Week:
http://www.uslhc.us/Teachers_and_Students
Introduction
Vanderbilt UniversityJuly 26, 2010
What is QuarkNet?
• Physicists, teachers and students• Research• Cosmic ray e-Lab• Masterclass• Special workshops• more
Introduction
Vanderbilt UniversityJuly 26, 2010
Our QuarkNet centersUniversities/labs doing particle physics research
2 physicist mentors
10 teachers
5 workshop days each year
Special opportunities
Introduction
Vanderbilt UniversityJuly 26, 2010
Our PI’s and StaffNotre Dame:Randy RuchtiMitch WayneDan KarmgardKen Cecire
Fermilab:Marge BardeenBob Peterson
U. Florida:Tom Jordan(Program Coor.)
U. Washington:Anna GoussiouKris Whelan
Introduction
Vanderbilt UniversityJuly 26, 2010
QuarkNet funding flow
NSF via Notre Dame:
• Teacher stipends
• Center support
• Summer research
• QuarkNet Admin (Anne Zakas)
DOE via Fermilab:
• Cosmic Ray project
• Masterclass
• Special programs
• Fermilab services
This is not as clear-cut as it looks: there are overlapping wave functions.
Introduction
Vanderbilt UniversityJuly 26, 2010
0 10 200
500
1000
1500
2000
Time Difference (ns)
Fre
qu
en
cy
Difference in Absolute Time
• Cosmic Rays– Sources– Composition, energy spectrum– Detection– Current experiments
• The QuarkNet Classroom Detector– Hardware overview– Classroom use– Experiments, measurements
• Data Analysis– Upload, analyze data & save data products– Share results– Enter logbook notes
Introduction
Vanderbilt UniversityJuly 26, 2010
CERN/EPPOG Masterclass• Students analyze
real data from CERN• Work with particle
physicists• Web conference
• Full day of particle physics for students and teachers
Introduction
Vanderbilt UniversityJuly 26, 2010
Particle Physics is International• The cosmic ray e-Lab in U.S. plus Asia and Europe• Masterclass spans Europe, South and North America
(esp. U.S.); also reaches Japan and South Africa
Introduction
Vanderbilt UniversityJuly 26, 2010
Who Ya Gonna Call? Operators are standing by…
Vanderbilt Mentors:
Med Webster
Will Johns
Paul Sheldon
QuarkNet Staff:
Tom Jordan
Bob Peterson
Kris Whelan
Ken Cecire
Also see: http://quarknet.fnal.gov/staff.shtml
• Tel: 574-631-3343 (O)
• Tel: 757-897-5296 (M)
• E-Mail: [email protected]
Introduction, done.
Vanderbilt UniversityJuly 26, 2010
21
What is the Masterclass?• As in a masterclass in the arts, students work with an expert.
• Expert = particle physicist.
• Instead of, say, a violin, the subject is particle physics data analysis.
Masterclass
Vanderbilt UniversityJuly 26, 2010
22
Masterclass Day – sample agendaTIME: ACTIVITY:
8:00-8:30Registration & Welcome
Cloud Chamber Demo
8:30-9:30 Introduction to Particle Physics (Mentor)
9:30-11:00 Tour
11:00-12:00Introduction to Data Analysis
(Teacher)
12:00-13:00 Lunch with a Physicist
13:00-15:00Data Analysis
Results Transmission
15:00-15:30EVO Logon
Questions & Discussion Points Preparation
15:30-16:30 EVO Videoconference
16:30-17:00 Evaluation & Closing
Masterclass
Vanderbilt UniversityJuly 26, 2010
Standard Model• Quarks combine to make
hadrons (protons, neutrons,…)
• Leptons – electron and its heavier cousins – and the small, unseen neutrinos
• Force carriers (the bosons)
• Heavier particles can “decay” into lighter particles.
Masterclass
Vanderbilt UniversityJuly 26, 2010
• What’s that, up in the sky?
• What’s it doing?
• What time is it?
• How do you know?
• Are you sure?
• What does this have to do with particle physics?
Masterclass
Vanderbilt UniversityJuly 26, 2010
Generic Detector Design• Cylinders wrapped around the beam pipe• From inner to outer . . .
• Tracking
• Magnet
• Electromagnetic calorimeter
• Hadronic calorimeter
• Muon chamber
Masterclass
Vanderbilt UniversityJuly 26, 2010
DELPHI at LEP: Our Z LabThe beam particles each had a total energy of 45.5 GeV:
LEP built Z bosons—they promptly decayed. The detectors measured the stuff that came out of the decay.
2 x 45.5 GeV = 91.1 GeV
91.1 GeV is the Z mass.
Masterclass
Vanderbilt UniversityJuly 26, 2010
What’s what?
Z 2 electrons
Z 2 muons
Z other stuff
What’s the count?
Masterclass
Vanderbilt UniversityJuly 26, 2010
Next steps for students:
Practice.
Talk with your fellow physicists.
Make teams of two.
Analyze up to 1000 events (as a group).
Report! Rapport! Rejoice! Relax!
Masterclass
Vanderbilt UniversityJuly 26, 2010
What’s new?• LHC Masterclass
• Students look at Z- and W-decays
• Test the new accelerator and detectors
• This is what physicists are doing right now…
Masterclass