Design and Simulation of a Magnetic Diverter Structure for the X-Ray Detecting System
Design and Simulation of a Magnetic Diverter Structure for the X-Ray Detecting System
复制标题
X射线探测系统磁转向器结构的设计与仿真
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Zhengxin Lv
中科院分区：
文献类型：
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作者：
Liansheng Li;Chunyu Wang;Loulou Deng;Fuchang Zuo;Zhiwu Mei;Zhengxin Lv
在X射线探测系统中，带电粒子本底的最小化是一个重要的问题。一般来说，对X射线探测系统有四种可能的破坏性辐射源，即：地磁俘获电子、银河宇宙射线粒子、太阳耀斑事件和总是对航天器有效载荷的性能造成噪音和损坏的机载辐射源。为了减轻X射线探测系统的背景噪声，提出了一种磁偏转器来屏蔽电子。这种方法的主要思想是，使用蒙特卡罗方法，跟踪所有电子的轨迹，并确定电子是否与X射线管碰撞，它们如何碰撞，以及这种碰撞的其他参数。通过计算电子的所有物理参数，可以得到偏转电子的数目。结果，可以计算背景噪声的屏蔽效率。
Minimization of the charged particle background in the x-ray detecting system is an important issue. Generally, there are four possible sources of damaging radiation for x-ray detecting systems, namely: geomagnetically trapped electrons, galactic cosmic ray particles, solar flare events, and onboard radiation sources that always cause noise and damage to the performance of the payload of a spacecraft. In order to alleviate the background noise of the x-ray detecting system, a magnetic diverter is proposed to shield the electrons. The main idea of this method is, using the Monte Carlo method, to follow the tracks of all the electrons and determine whether the electrons collide with the x-ray tube, how they collide, and other parameters of this collision. The number of deflected electrons can be obtained by computing all the physical parameters of electrons. As a result, the shielding efficiency of background noise can be calculated.