【摘要】 介绍了用于试验粒子束流中的电子选择的气体阈式契仑科夫计数器的研制 ,包括它的设计、加工安装和调试 ,并对其工作性能做了测量 .采用CO2 作为辐射体 ,用XP2 0 2 0Q光电倍增管记录契仑科夫光信号 ,测量给出对电子的选择效率约为 (99.0± 0 .5 ) % .更多还原

【Abstract】 The Cherenkov counter used for selecting electrons of the test beam has been studied in this article.The design,manufacture,assembly and testing of the Cherenkov counter are described.And the performance of this counter is measured.The CO 2 gas is used as Cherenkov radiator,the XP2020Q photomultiplier is applied for recording signals of the Cherenkov light.The (99.0±0.5)% efficiency of the electron selection has been reached.更多还原