【摘要】 在兰州重离子加速器冷却储存环将要建设的外靶实验终端上,中子墙探测装置是用来开展放射性束物理以及利用放射性束开展非对称核物质性质研究的一个重要的实验设备。本文对应用于该实验装置上的光电倍增管分压系统进行了研究,给出了适合时间性能探测的时间型分压器设计参数以及测试结果。更多还原

【Abstract】 On the outer-target experimental terminal in Heavy Ion Cooling Storage Ring at Lanzhou,an experimental setup for the study of RIB physics and the investigation of features of the asymmetric nuclear matter by means of RIB is highly required. The neutron detection wall is a main part of the detection equipment,in which there are 1000 photomultipliers serving as signal readout devices. The PMTs’ voltage divider is studied. Both design parameters and the measured results show that the timing-type voltage divider is more suitable for detecting time signals.更多还原