Joint Atlas CMS SLHC Optoelectronics Working Group Francois Vasey on behalf of WG
DESPEC-Ge: Summary of the WG parallel...
Transcript of DESPEC-Ge: Summary of the WG parallel...
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DESPEC-Ge:Summary of the WG parallel
session
A.Gadea on behalf of A.Jungclaus
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Topics presented:• Possible configuration of DESPEC-Ge
planar detectors with AGATA crystals. To be used to probe the Imaging array concept.
• Progress on the Cryostat development at the Sofia University.
• Test of the behavior of Ge detectors in the vicinity of the FRS beam-line and implantation target.
• Preamplifier tests.
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THE Ge IMAGING TELESCOPE CONCEPT
Maria Doncel, Begoña Quintana
LRI University of Salamanca Andres Gadea
IFIC, CSIC-Uni. Valencia
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Imaging with wall configurations
Algorithm developed for AGATA not optimized yet for
DESPEC+AGATA. Developed for background reduction
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Position resolution for PSA:
AGATA: 5mm
DESPEC Ge Planar : 2 mm
3 sources separated 6cm placed in the central
AIDA DSSSD :137Cs: (0,0,0)60Co: (-60,0,0)152Eu: (60,0,0)
137Cs60Co
152Eu
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DESPEC Ge cryostatD.Balabanski et al.
72 x 72 x 20
15
T < − 180 °C
3 W electric cooler
FET: < − 20 °C
two stage Peltier
Preamps: 150 mW
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Cryostat concept
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Ge Detector functionality test in highbackground conditions
P.Boutachkov, M. Górska et al,
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PREAMPLIFIERS CHARACTERIZATION FOR
DESPEC (FAIR)
Álvaro Hernández Prieto (LRI – Usal. Salamanca)Ivan Kojouharov (GSI. Darmstadt)
DESPEC Meeting - Darmstadt, Germany. October 2009
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Tested Units (Features)• PSC 821-CMS
– Dissipated Power = 1360 mW• HEKO
– Dissipated Power = 420 mW• Ylocator
– Dissipated Power = 216 mW
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Conclusions
• Good results for PSC 821-CMS but higher Power consumption.
• Not good results for HEKO
• Good results for Ylocator Preamp at Low input C � Development.
• The best Option: WARM FET