Beam tests of the gas electron multiplier
Beam tests of the gas electron multiplier
复制标题
气体电子倍增器的束流测试
DOI：
10.1016/s0168-9002(98)01406-5
复制
发表时间：
1999
影响因子：
1.4
通讯作者：
F. Sauli
中科院分区：
文献类型：
--
作者：
A. Bressan;J. Labbe;P. Pagano;L. Ropelewski;F. Sauli
本文描述了在实验室和欧洲核子研究中心（CERN）的高能带电粒子束中，用单、双GEM探测器进行系统测量的结果，探测器的有效面积为10× 10 cm ~ 2，带有印刷电路读出。使用快速模拟读出电子学，我们证明了最小电离粒子接近100%的效率，与典型的信号/噪声比超过50和高达103的单和双GEM配置，分别为15 ns fwhm的时间分辨率。定位精度约为40μm r.m.s.在垂直轨道上，当入射角与法线成20°时，衰减到200μm。GEM探测器在不易燃的气体混合物（氩-二氧化碳）中工作，坚固耐用，重量轻，制造成本低，性能优异，可靠性高，适合在高亮度对撞机的恶劣环境中使用。
We describe the results of systematic measurements, carried out with single and double GEM detectors with printed circuit read-out and having an active area of 10×10cm2, both in the laboratory and in a high-energy charged particles beam at CERN. Using fast analog readout electronics, we demonstrate efficiencies for minimum ionizing particles close to 100%, with typical signal/noise ratios above 50 and up to 103for the single and double GEM configuration, respectively, and a time resolution of 15ns fwhm. Localization accuracies around 40μm r.m.s. have been obtained for perpendicular tracks, degrading to 200μm at 20° of incidence to the normal. Operated in a non-flammable gas mixture (argon–carbon dioxide), GEM detectors are robust, light and cheap to manufacture, and offer excellent performances and reliability suited for use in the harsh environments met at high luminosity colliders.