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““I have really discovered how I have really discovered how beautiful science physics is and I beautiful science physics is and I have enjoyed every second of it”have enjoyed every second of it”
Andreas Pantelis H5CAndreas Pantelis H5C
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What is HiSPARC?What is HiSPARC?
1. An experiment to detect high energy cosmic particles and to study their origin.
2. A project to show high schools students a realistic picture of the work at scientific institutes, to stimulate the choice for a scientific study.
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Air showers…Air showers…
(Figure from Nagano en Watson, Rev. Mod. Phys. 72, 689 (2000)).
Air showers: highestenergies occur rarely(e.g. 1 event per 100
square kilometer per year)
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To detect cosmic showers, a network
of detectors is made…
GPS
……air shower detectionair shower detection
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…build and managed by high-school students
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• 5 clusters• ~30 schools
actively involved, ~ 10 in pipeline
• More than 150 students and 50 teachers
• Physics students!
StatusStatus
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“I had 4 unmotivated pupils. They participated in HiSPARC and now they are my most enthusiastic students” F. Lapoutre, Science teacher
TeachersTeachers
“This cooperation is just what is needed to show pupils at High School what Science is all about”
B. Vrijdaghs, Science teacher
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•Development of educational materials (e.g. A. de Leeuw)•Electronic learning environment (J. Colle and F. Hidde)•Analysis, profielwerkstukken•Teacher network
Teacher involvementTeacher involvement
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Highlights 2004Highlights 2004
• 22 new detector stations• 2 new LIO’s in Amsterdam• First national teachers workshop• Altran Foundation Award 2004 • Support from ‘Deltapunt’ for the
development of a HiSPARC educational module (90 k€)
• Support from OC&W for ‘Innovation at High Schools’ (233 k €)
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High school student activitiesHigh school student activities• In Nijmegen: building and analysis• In other clusters: mainly building the detector
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The HiSPARC DetectorThe HiSPARC Detector
From the ‘profielwerkstuk’ from Utrecht (Pieterde Goeje, Veerle Bodewes, Brend Wanders)
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““Profielwerkstukken”Profielwerkstukken”• about 150 students
– building detector• oscilloscope, impedance matching, fast electronics• particles, muons, cosmic rays, showers, scintillation,
photo-electric effect• hardware, grinding, polishing etc.• calibrations, excel, statistics (Poisson, Gaussian
distributions)– several movies and interviews– HiSPARC web sites– software development– GPS positioning– Data analysis– promotion videos etc.
• 2005: Review committee and HiSPARC journal
students calibrating a scintillator plate
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HiSPARC DAQHiSPARC DAQ
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Data retrievalData retrieval
• Data : retrievable via website• mysql database
pulshoogte
1
10
100
1000
10000
0 50 100 150 200
pulshoogte [mV]
aan
tal
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• Rate dependence on weather ( F. Hidde, Herman Wesselink College)– thunderstorm on Nov. 26
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ElectronicsElectronics• Much effort NIKHEF ET
– 35 produced • Non-scalable (mass
production)• Improved design from
Altran– Rob Derlage
(Altran)– analog part: Hans
Verkooijen (NIKHEF)
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Altran designAltran design
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
ntil
lato
r IV
Optional
•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
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Press CoveragePress Coverage• many (~50) news
paper articles– including 3 in
Volkskrant and 1 in NRC
– Natuur, wetenschap and techniek
– intermediair• national radio• RTV NH• article in Nature
– june 17, 2004 vol. 6993
• first scientific results in NtvN (Ch. Timmermans)
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Outlook:Outlook:• “Ready to grow” (Altran)
– Electronics– Data warehousing– Organization– Funding
• Expansion to other fields– MeteoKids and Kennislink– Lofar@school (Nijmegen started)– Virtual school lab (grid and Coach)– www.geluids.net
• International workshop (March 2005) at NIKHEF• HiSPARC goes to Africa: Sudan
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More information on:More information on:
www.hisparc.nlwww.hisparc.nl
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