Physics – Instrumentation and Detectors
Scientific paper
2005-03-30
Nucl.Instrum.Meth. A546 (2005) 457-465
Physics
Instrumentation and Detectors
16 pages, 14 figures, Submitted to Nucl. Instr. Methods A
Scientific paper
10.1016/j.nima.2005.02.042
The physical processes of charge collection and gas multiplication of a Micro Pixel Chamber (mu-PIC) were studied in detail using a three-dimensional simulation. The collection efficiencies of primary electrons and gas multiplication factors were calculated for several electrode structures. Based on those studies, we analyzed the optimization of the electrode structure of the mu-PIC, in order to obtain a high gas gain of more than 10^4 and a simultaneous suppression of discharges. Consequently, we found that these characteristics strongly depend on the substrate thickness and the anode diameter of the mu-PIC. In addition, a gas gain of 10^5 would be expected for a mu-PIC having a thick substrate of > 150um.
Bouianov Marina
Bouianov Oleg
Kubo Hidetoshi
Miuchi Kentaro
Nagayoshi Tsutomu
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