强激光与粒子束, 2012, 24 (6): 1488, 网络出版: 2012-06-06
能量响应平坦的康普顿探测器设计
Compton detector with flat energy response
真空康普顿探测器 灵敏度 能量响应平坦 蒙特卡罗方法 vacuum Compton detector sensitivity flat energy response Monte Carlo method
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0.01,1.00 mm厚Au叠加的发射极,3 mm厚Fe前窗以及3 mm挡铅。在40 mm准直下,实现了在0.4~7.0 MeV γ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。
Abstract
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’.
翁秀峰, 黑东炜, 韩和同, 宋朝晖, 傅录祥. 能量响应平坦的康普顿探测器设计[J]. 强激光与粒子束, 2012, 24(6): 1488. Weng Xiufeng, Hei Dongwei, Han Hetong, Song Zhaohui, Fu Luxiang. Compton detector with flat energy response[J]. High Power Laser and Particle Beams, 2012, 24(6): 1488.