Test of a small prototype of the COMET cylindrical drift chamber

Test of a small prototype of the COMET cylindrical drift chamber
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COMET 圆柱形漂移室小型原型的测试

DOI:
10.1016/j.nima.2021.165756
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发表时间:
2021
期刊:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Zhang J.
Zhang J.
中科院分区:
--
文献类型:
--
作者:
Wu C.;Wong T.S.;Kuno Y.;Moritsu M.;Nakazawa Y.;Sato A.;Sakamoto H.;Tran N.H.;Wong M.L.;Yoshida H.;Yamane T.;Zhang J.

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利用电子束研究了用于彗星第一阶段实验的圆柱形漂移室(CDC)的小型原型的性能。原型室是用交替的全立体线结构建造的,并在没有磁场的情况下用He− iC 4 H 10(90/10)气体混合物操作。研究了漂移时空关系、漂移速度、dE/dx分辨率、命中效率和空间分辨率随距离的变化规律。在高于1800 V的电压下,获得了150 μ m的平均空间分辨率和99%的命中效率。我们已经证明了原型的设计和气体混合物与COMET CDC的操作相匹配。
The performance of a small prototype of a cylindrical drift chamber (CDC) used in the COMET Phase-I experiment was studied by using an electron beam. The prototype chamber was constructed with alternating all-stereo wire configuration and operated with the He− iC 4 H 10 (90/10) gas mixture without a magnetic field. The drift space–time relation, drift velocity, d E/d x resolution, hit efficiency, and spatial resolution as a function of distance from the wire were investigated. The average spatial resolution of 150 μ m with the hit efficiency of 99% was obtained at applied voltages higher than 1800 V. We have demonstrated that the design and gas mixture of the prototype match the operation of the COMET CDC.
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