CYCIAE-100回旋加速器低温冷板参数的蒙特卡罗模拟

Monte-Carlo Simulation of Cryopanel Parameter in CYCIAE-100 Cyclotron

摘要: 基于气体分子运动理论建立了气体分子与低温冷板的碰撞模型，用蒙特卡罗方法模拟了放置在CYCIAE-100回旋加速器主磁铁谷区的低温冷板粘附概率、传输概率等参数，并计算其捕获系数。根据模拟计算结果设计加工了低温冷板及其性能测试罩，对低温冷板的抽速性能进行测试。抽速测试结果表明，用蒙特卡罗方法模拟的低温冷板参数与测试结果符合较好，相对误差为2%。

Abstract: The gas molecular collision model was built based on the theory of gas molecular motion, and structure parameters such as sticking probability and transmission rate of cryopanel placed in the magnet valley of CYCIAE-100 cyclotron were simulated by Monte-Carlo method. The pumping speed of cryopanel was tested in testing dome. The results show that the pumping speed of cryopanel simulated by Monte-Carlo method is consistent with test results, and the relative error is 2%.