一个用于多重示踪技术的康普顿成像装置

A Compton Camera for Multitracer Technique

提出了一个由位置灵敏高纯锗探测器组成、用于多重示踪技术的康普顿成像装置。简要介绍了康普顿成像系统的工作原理以及影响其空间分辨率的各种因素。用蒙特卡洛方法模拟了所提出的康普顿成像装置对处于不同位置、发射不同能量γ射线的点源可达到的效率和空间分辨率。用现有的 2个多单元高纯锗探测器进行了三个点源成像实验 。

A Compton camera consisting of two position sensitive germanium detectors is proposed for multitracer technique. Its principle is briefly introduced and the various factors that affect its spatial resolution are discussed. The efficiency and spatial resolution of the proposed Compton camera for a point source emitting different energy gamma rays from different positions are calculated by Monte Carlo simulations. An Experiment is performed to measure the positions of three point sources simultaneously by using two existing segmented germanium detectors. The feasibility of the proposed Compton camera for multitracer is demonstrated.