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This report emphasizes the need for clear specifications and testing protocols for Xe detector readout systems, including simulations, purifications, and signal amplification processes. It addresses challenges with prototype detectors and offers a quantitative approach for testing the ASIC, focusing on amplifier channel switches and cooling tests. The report suggests improvements in functions testing and cooling system simulations using Geant4 and Gate software. It also highlights the importance of updating Geant4 and Gate versions for optimal detector performance.
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Report 090624 • Takatoshi Higashi
Assignment • Be more clearly about the specification of Xe detector’s Readout. • Test boards for the first ASIC are coming soon. (tomorrow?) • Simulations (GEANT4, GATE etc)
How to be more clearly. Purifications? Ionization signal is low? Gain wants 100 times or variable ... suggestion.. Preamp x 10, Shaper x 10. TEG • Clarification of the problems about prototype or Xe detectors. • More quantitative Not yet.
How to test “the ASIC” Especially, Amplifier all channel (8) switches • At first, “Functions” must be checked. • Second, “Cooling test” is cool. Not yet. It must be enough to test at normal temperature
For the functions test • Maybe I can do this by the setting now in use.
For the cooling test • Tolerance to the low temperature of materials. • Cooling system.
Simulations • Geant4 do well. Picture shows run-sample “example N07 sample.mac”. Cautions: Upgrade geant4 and gate: geant_4.9.1.p02 -> geant_4.9.2.p01 gate_v4.0.0 -> gate_v5.0.0
LXe detector(optical) • at first, novice N02 & N03 • energy deposit
Simulations • GATE is ... I got some advices from a GATE user: Due to his advise, it maybe installed. But, benchmarks have not done well yet.
Materials ? • FCALMaterialConsultant.cc • EM10Materials.cc • GateMaterials.db