Laboratory aging studies for the HERA-B muon chambers

被引：1

作者：

Danilov, M ^{[1
]}

Tikhomirov, I ^{[1
]}

Titov, M ^{[1
]}

Zaitsev, Y ^{[1
]}

机构：

[1] Inst Theoret & Expt Phys, Moscow 117259, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 494卷 / 1-3期

关键词：

D O I：

10.1016/S0168-9002(02)01473-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The severe radiation environment of the HERA-B experiment leads to a maximum accumulated charge on a wire, within the ration detector, of 200 mC/cm wire. For operation in this high-intensity environment, the main criteria for the gas choice turned out to be stability against aging. We report recent results of laboratory aging studies performed by irradiating proportional wire chambers filled with Ar/CF4/CH4 (74:20:6), Ar/CF4/CH4 (67:30:3), and Ar/CF4/CO2 (65:30:5) mixtures. The penetration of water and oxygen through the walls of plastic tubes has also been investigated. Water can be introduced indirect to the gas mixture by using polyamide (nylon) pipes for gas supply lines. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：236 / 240

页数：5

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