大体积氟化钡探测器的性能测试

Performance Test of Large BaF₂ Detector

摘要: 中国原子能科学研究院正在研制建立的γ全吸收型探测装置（GTAF）由40个氟化钡（BaF₂）探测器单元组成。对单个大体积氟化钡晶体探测器单元的主要相关性能，诸如单个探测器的组装、晶体封装条件和探测器能量分辨、时间分辨及其长期稳定性等进行测试。测试结果表明，40个氟化钡（BaF₂）探测器单元的能量分辨和时间分辨符合基于γ全吸收型探测装置的中子辐射俘获核反应截面测量需求。

Abstract: The γ total absorption facility (GTAF) was being built in China Institute of Atomic Energy (CIAE). It was composed of 40 BaF2 detector modules. The performance of every single module, such as detector construction, choosing of crystal pack-aging condition, energy resolution, time resolution, and long time stability were tested. From the energy resolution and time resolution test, it shows that the detector modules are good for using in neutron capture cross section measurement.