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反冲质子磁分析技术用于氘氚中子能谱测量研究
Study of magnetic proton recoil technology for measurement of deuterium-tritium neutron spectrum
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摘要: 介绍了一种基于反冲质子法和磁分析技术的氘氚聚变诊断方法,适用于稳态及脉冲条件下的等离子体温度、燃料密度和中子产额的精确诊断.设计了小型的原理性装置,磁分析器使用高性能钕铁硼二极永磁铁,焦平面上使用CR-39固体径迹探测器或PIN探测器测量质子位置分布.使用~（239）Puα源对磁分析器进行了实验标定,建立了配套的模拟程序.利用蒙特卡罗方法模拟分析了装置整体性能,并在K-400加速器上进行了中子实验研究.Abstract: A kind of fusion dianostics based on proton recoil method and magnetic analyzing technology is introduced.It can be used for the accurate diagnoses of plama tempreture,fuel density and neutron yield.A prototype is designed,using a high-powered Nd-Fe-B permanent dipole for magnetic analyzer,and proton position distribution in the focal plane is measured by CR-39 trajectory detector or PIN detector.The system is calibrated with a ~（239） Pu source,and a corresponding particle transport simulation program is worked out. The performance of the spectrometer is investigated with the Monte Carlo simulation,and neutron experiments are taken on the K-400 accelerator.
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