Forward-bias operation of Si detectors: a way to work in high-radiation environment

被引:13
作者
Beattie, LJ [1 ]
Chilingarov, A [1 ]
Sloan, T [1 ]
机构
[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
关键词
irradiated silicon detectors; forward bias operation;
D O I
10.1016/S0168-9002(99)00840-2
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Test diodes irradiated by neutrons with fluences up to 10(15) cm(-2) were successfully operated as particle detectors under forward bias, Charge Collection Efficiency (CCE) of similar to 70% was reached for minimum ionising particles at relatively low-bias voltages. The more usual reverse bias requires similar to 10 times larger voltage to give a similar CCE. A decrease in the charge trapping is observed in forward bias operation compared to that under reverse bias, The dark current under forward bias has the usual temperature dependence. This could be used to optimise the operation condition of forward-biased detectors in a real experiment. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:293 / 302
页数:10
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