基于贝叶斯优化的高能质子空间传输精确控制  

Precise control of high-energy protons transport in space environment by using bayesian optimization

作　　者：申诗雨 杨晓虎 张国博 赵子琦 马燕云[2] Shen Shiyu;Yang Xiaohu;Zhang Guobo;Zhao Ziqi;Ma Yanyun(Department of Nuclear Science and Technology,National University of Defense Technology,Changsha 410073,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学理学院核科学与技术系,长沙410073 [2]国防科技大学前沿交叉学科学院,长沙410073

出　　处：《强激光与粒子束》2023年第10期120-126,共7页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12175309、11975308、12005297);中国科学院战略先导专项(XDA25050200);湖南省自然科学基金项目(CX20190001);国防科技大学青年创新奖资助课题(20180104)。

摘　　要：综合考虑地磁场、高能质子的相对论效应以及同步辐射的影响,建立了质子在空间传输的单粒子运动模型。基于该模型,提出利用贝叶斯优化方法,实现给定质子能量下,质子从空间初始点传输到目标点的精确控制方法,获得了出射方向随出射位置的变化规律,当位置径向角取0°和180°时,位置轴向角的取值不会改变粒子的最优出射方向。研究结果为质子束在空间环境中的长程传输提供理论支撑。Considering the geomagnetic field,the relativistic effect and bremsstrahlung radiation of high-energy protons,a single particle motion model of proton transport in the space environment is established.Based on this model,the Bayesian optimization method is proposed to realize the precise control of protons transport from the initial position to the target under a given proton energy.The dependence of the proton launch angle on the launch height is obtained,that is,when the coordinate radial angle is 0°and 180°,the value of the coordinate axial angle will not change the optimal emission direction of the particles.The results can provide theoretical references for long-distance transport of proton beams in the space environment.

关 键 词：高能质子 传输控制 空间传输 贝叶斯优化 

分 类 号：O53[理学—等离子体物理]