4π探测器阵列实验的电子学与获取系统  

Electronics and acquisition system of 4π multi-detector array experiment

作　　者：王宏伟[1] 段利敏[1] 肖志刚[1] 胡荣江[1] 吴和宇[1] 李松林[1] 诸永泰[1] 李祖玉[1] 魏志勇[1] 殷旭[1] 王晓秋[1] 靳根明[1] 朱海东[1] 张保国[1] 卢朝晖[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《核电子学与探测技术》2002年第3期204-207,共4页Nuclear Electronics & Detection Technology

基　　金：中国科学院"九五"基础性研究重大科学基金 (KJ95 T- 0 3);中国科学院所长基金 (SZ0 10 10 5 )

摘　　要：介绍了 4 π多探测器阵列上的第一次中能重离子实验的电子学与数据获取系统。4 π多探测器为快慢塑料探测器和快塑料闪烁体 + Cs I的 Phoswich探测器组成 ,通过电荷数字转换 (QDC)分别记录探测器快慢信号 ,实现粒子的鉴别。在逻辑电路中 ,对前后角探测器分别给出 Trigger信号、QDC的清零信号和快慢公共门信号等。结果表明 ,前角探测器从质子、氘、氚、3 He、4He一直到 S。The first intermediate energy heavy ion experiments, on the 4π multi detector array at Lanzhou (MUDAL), have been performed in the Institute of Modern Physics (IMP). In this paper, we introduce the data acquisition system and electronics of 4π detector array, consisting of fast slow scintillator type phoswichs and fast scintillator plus CsI(Tl) crystal type phoswichs detectors. The fast and slow components of phoswich have been recorded by QDC and the ware has been used to identify the particle. In the intermediate energy experiment, the products have the forward characters, so the detectors have the different angle and distance about target. We give the forward and backward angles trigger signal, clear signal, fast common gate and slow common gate signal. The results show that the phoswich detectors can identified particles, from proton, deuterium, tritium, 3He, 4He to sulfur, phosphorus.

关 键 词：4π多探测器阵列 获取系统 电子学 结构 中能重离子实验 

分 类 号：O571.1[理学—粒子物理与原子核物理]