Surface streamer breakdown mechanisms in microstrip gas counters

被引：36
|
作者：
Peskov, V
Ramsey, BD
Fonte, P
机构：
[1] UNIV COIMBRA,LIP,COIMBRA,PORTUGAL
[2] ECOLE SUPER ENGN,COIMBRA,PORTUGAL
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 392卷 / 1-3期
关键词：
D O I：
10.1016/S0168-9002(97)00224-6
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have studied breakdown mechanisms in MSGCs. For comparison, ''microstrip detectors'' without dielectric substrates were also tested. We found that detectors without substrates can always operate at gas gains 5-10 times higher than those with substrates, and that these higher gains are limited by self-quenched streamers. In the case of microstrip detectors with substrates, streamers also occur, but have a very narrow (in voltage) self-quench region and then transit rapidly to a ''gliding'' discharge. We have tested new geometries of MSGC which allow high gains (> 10(5)) to be reached.
引用
收藏
页码：89 / 93
页数：5
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