AGING STUDIES WITH MICROSTRIP GAS-CHAMBERS

被引：23

作者：

BOUCLIER, R ^{[1
]}

GARABATOS, C ^{[1
]}

MANZIN, G ^{[1
]}

MILLION, G ^{[1
]}

SAULI, F ^{[1
]}

TEMMEL, T ^{[1
]}

SHEKHTMAN, L ^{[1
]}

机构：

[1] CERN,CH-1211 GENEVA 23,SWITZERLAND

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 348卷 / 01期

关键词：

D O I：

10.1016/0168-9002(94)90848-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Microstrip gas chambers (MSGCs) are intrinsically capable of operating at very high radiation fluxes, up to and above 10(6) particles mm-2 s-1. It was noticed, however rather early in the development of the detectors that sustained exposure to radiation could produce irreversible damage (decrease of gain and discharges) easily assimilated with the ageing phenomena which are known to occur in proportional counters, and caused by the polymerization of gas molecules in the avalanche process. We describe the results of a systematic investigation of ageing under sustained irradiation of MSGC plates manufactured on several substrates and operated in clean laboratory containers as well as in mechanical assemblies better suited for the use of the detectors in experimental set-ups. In the best experimental conditions, we have demonstrated survival without degradation of the detectors up to a collected charge of 120 mC cm-1; in less than optimal conditions, ageing is observed already at a level of a few muC cm-1. A careful selection of the operating gas and of the materials used in manufacturing appears mandatory to guarantee survival of the devices in a high radiation environment such as that of the Large Hadron Collider (LHC) detectors. The present study has been realized at CERN in the framework of the RD-28 Collaboration (Development of microstrip gas chambers for high-rate applications).

引用

页码：109 / 118

页数：10

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