能量响应平坦的康普顿探测器设计  

Compton detector with flat energy response

作　　者：翁秀峰[1] 黑东炜[1] 韩和同[1] 宋朝晖[1] 傅录祥[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《强激光与粒子束》2012年第6期1488-1492,共5页High Power Laser and Particle Beams

摘　　要：以开展能量响应平坦的真空康普顿探测器为目的,采用厚薄材料叠加补偿设计思想,使用蒙特卡罗方法,对真空康普顿探测器的灵敏度能量响应进行了优化设计。优化的探测器系统采用0.01,1.00mm厚Au叠加的发射极,3mm厚Fe前窗以及3mm挡铅。在40mm准直下,实现了在0.4～7.0MeVγ能区内,探测器本征灵敏度极值变化小于10.7%。该能量响应平坦性优于当前各种常见的γ探测器。The work focuses on the study of vacuum Compton detector（VCD） with flat energy response.The proposed VCD adopts a compensation design of the emitter,i.e.a superimposition of materials of varied thicknesses,and is optimized with Monte Carlo method.The optimally designed VCD consists of an emitter with the superimposition of 0.01,1 mm-thick Au,a 3 mm-thick Fe front window and a 3 mm-thick Pb shielding.Its non-flatness of energy response to gamma-ray is less than 10.7% over 0.4-7.0 MeV energy zone.The flatness of energy response to gamma ray of this VCD is more excellent than current gamma detectors’.

关 键 词：真空康普顿探测器 灵敏度 能量响应平坦 蒙特卡罗方法 

分 类 号：TL816.2[核科学技术—核技术及应用]