磁质子反冲谱仪磁分析系统的设计
Design of magnetic analysis system for magnetic proton recoil spectrometer
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摘要: 磁质子反冲谱仪(MPR)是测量惯性约束聚变（ICF）实验和高功率聚变装置中子能谱的一种新型高性能诊断仪器，磁分析系统是其核心部分。通过2维束流输运和3维粒子输运模拟完成了紧凑型MPR谱仪磁分析系统的设计，对系统参数及系统性能进行了分析，分别根据能量分辨力、探测效率和计数率优先原则提出3种系统设计方案。结果表明:磁分析系统在1.5%～3.0%的能量分辨力范围达到10-5～10-4量级的探测效率，结构紧凑，符合MPR谱仪的设计目标。Abstract: Magnetic proton recoil (MPR) spectrometer is a novel diagnostic instrument with high performance for measurements of the neutron spectra from inertial confinement fusion (ICF) experiments and high power fusion devices. The design of the magnetic analysis system, which is a key part of the compact MPR-type spectrometer, has been completed through two-dimensional beam transport simulations and three-dimensional particle transport simulations. The analysis of the system’s parameters and performances was performed, as well as system designs based on preferential principles of energy resolution, detection efficiency, and count rate, respectively. The results indicate that the magnetic analysis system can achieve a detection efficiency of 10-5～10-4 level at the resolution range of 1.5% to 3.0%
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Key words:
- fusion neutron /
- magnetic proton recoil /
- energy spectrum /
- magnetic analysis /
- simulation
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