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H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Hisparc Status
hisparc project: outreach hisparc mission
examples of students participationprogress 2004plans for 2005
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Showers
Hisparc: outreach project bring high-school students in
contact with science participate in scientific
experiment air showers: highest energies
occur rarely (e.g. 1 event per 100 square kilometer per year)
determine energy and direction with scintillators on school roofs.
(figure from Nagano en Watson, Rev. Mod. Phys. 72, 689 (2000)).
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
detector 2 scintillator detectors placed a few meters apart (typical
coincidence rate of 0.3 Hz) a GPS antenna for accurate timing From the ‘profielwerkstuk’ from Utrecht (Pieter de Goeje,
Veerle Bodewes, Brend Wanders) http://osg-schoonoord.doorn.kennisnet.nl/vwo-5/intern/napohisparc/
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Activities 2004 Nahsa (Nijmegen, Charles Timmermans) started in 2002.
increased to 7 active detectors focuses also on data analysis published first scientific result (NtvN).
Active detectors in Amsterdam (14 built, 12 installed) new electronics hisparc website, www.hisparc.nl (Kees Huyser)
Leiden 1 detector active, above minigrail 2 more in progress in region Leiden. Next year: Khartoum Sudan (pierre van
Baal)
Utrecht 1 detector active, 2 being built measured tracks
Groningen 4 detectors being built
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
High school student activities In Nijmegen: building and analysis In other clusters: mainly building the detector
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Student activities about 150 “profielwerkstukken” building detector
particles, muons, cosmic rays, showers, scintillation, photo-electric effect
oscilloscope, impedance matching, fast electronics hardware, grinding, polishing etc. calibrations, excel, statistics (Poisson, Gaussian distributions)
several movies and interviews most schools with web sites software development cosmic rays GPS positioning weather promotion videos etc.
students calibrating a scintillator plate
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Hisparc DAQ
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Data retrieval Data : retrievable via website mysql database
pulshoogte
1
10
100
1000
10000
0 50 100 150 200
pulshoogte [mV]
aa
nta
l
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
data analysis Rate dependence on weather ( F. Hidde, Herman Wesselink
College) thunderstorm on Nov. 26
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Electronics
lineair amplification modified filter,
impedance matching, integrator circuit
12 volt circuit for photomultiplier tube
modified coincidence timing
integrated scalers many thanks to
Henk Peek
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Electronics, Altran
current design not scalable, too much man power involved
Improved design from Altran Rob Derlage (Altran) analog part: Hans Verkooijen
(NIKHEF) usb interface integrated ADC’s – 440 MHz
sampling integrated GPS timing fully programmable logic and
settings up to 4 channels scaler readout, etc. cost reduction, factor 3
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Altran design (Rob Derlage)
IF
IF ADC 1A12-bit
210 MSPS
ADC 1B12-bit
210 MSPS
IF ADC 2A12-bit
210 MSPS
ADC 2B12-bit
210 MSPS
Integrator Control DAC
GPS Receiver Module
GPS Antenna
Sci
ntill
ator
IS
cint
illat
or I
I
Photo Multiplier Control DAC
12V PSPhoto Multiplier
To Photo Multipliers I and II
Central Processing Unit
(FPGA)
OCXO(Clock Generator)
Status Indicators
Clock Skew and PLL
Master BUS
SLAVE BUS
USB Interface
EEPROM(Settings)
JTAG Interface
Trigger I/O
Sci
ntill
ator
III
IF
Sci
ntill
ator
IV
Optional
technical design specifications are being discussed now
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Press Coverage many (~50) news
paper articles including 3 in
Volkskrant and 1 in NRC
Natuur, wetenschap and techniek
intermediair
national radio,television Noord Holland article in Nature
june 17, 2004 vol. 6993
first scientific results in Nederlands tijdschrift voor Natuurkunde (Charles Timmermans)
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Outlook Next year: get most out of Altran award
ready to grow electronics data warehousing funding, professional organization
electronic learning environment (J. Colle and F. Hidde) analysis, profielwerkstukken, teacher network (F. van Liempt et al.) contacts with Coach people (Amstel Institute)
hisparc analysis in coach, detector compatible with coach
European contacts (Poland, Sweden, Portugal, England...) make detector network
www.geluids.net weather information Lofar – Nijmegen is testing with a Lofar detector
possible grid at high schools, virtual school lab Peter Sloot (UvA)
H.J. Bulten NIKHEF annual meeting, 21-22 Dec. 04
Virtual laboratory
……High School Network…High School Network…
Grid MiddlewareGrid Middleware
Intelligent Detector InterfaceIntelligent Detector InterfaceGPSGPS
…… …
Wind
Wind
Sound
Sound
Cosm
icsC
osmics
Connect experiments, data and students in ‘Virtual Laboratory’
LOF
AR
LOF
AR