Improved design and construction of an ionization chamber for the CSNS beam loss monitor (BLM)  

作　　者：田建民 徐美杭 赵中亮 陈昌 阮向东 陈元柏 徐韬光 陆双桐 

机构地区：[1]State Key Laboratory of Technologies of Nuclear Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences [2]Physics Science and Engineering Technology Department, Guangxi University [3]Beijing Nuclear Instrument Factory, China National Nuclear Corporation

出　　处：《Chinese Physics C》2012年第4期329-333,共5页中国物理C（英文版）

基　　金：Supported by 973 Project(2007CB209904)

摘　　要：Based on the first ionization chamber （IC） prototype, the structure, working gas component and electrode material of the IC are improved. The test of the improved IC shows that the plateau length is about 2000 V, the plateau slope is less than 0.2%/100 V, the sensitivity is 19.6 pA/rad·h 1, the up-limitation of the linearity can be up to 3.6×105 rad/h, and the applied voltage can be operated to 3500 V. The test results show that the performance of the improved IC meets the requirements of the beam loss monitor.Based on the first ionization chamber （IC） prototype, the structure, working gas component and electrode material of the IC are improved. The test of the improved IC shows that the plateau length is about 2000 V, the plateau slope is less than 0.2%/100 V, the sensitivity is 19.6 pA/rad·h 1, the up-limitation of the linearity can be up to 3.6×105 rad/h, and the applied voltage can be operated to 3500 V. The test results show that the performance of the improved IC meets the requirements of the beam loss monitor.

关 键 词：CSNS BLM detector ionization chamber plateau curve 

分 类 号：TL811.1[核科学技术—核技术及应用]