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首页> 外文会议>Conference on Gravitational-Wave Detection, Aug 23-25, 2002, Waikoloa, Hawaii, USA >Charging of isolated proof masses in satellite experiments such as LISA
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Charging of isolated proof masses in satellite experiments such as LISA

机译：在卫星实验（例如LISA）中对孤立的证明质量进行充电

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摘要

We report on a Monte Carlo simulation of electrostatic charging of the LISA proof masses by cosmic-ray protons and alpha particles, developed using the Geant4 toolkit. A positive charging rate of 58+-17 +e/s (proton charges per second) was obtained with the minimum Geant4 energy threshold for the production of secondary particles by electromagnetic processes. This charging rate does not seem to depend strongly on the tracking of low-energy secondary electrons, and is some 5 times larger than that found in previous simulations. The difference is only partly explained by the slightly larger proof mass considered in this study. This figure is used to place new limits on the required discharge time of the LISA test masses.
机译：我们报告了使用Geant4工具包开发的宇宙射线质子和α粒子对LISA证明质量的静电电荷的蒙特卡罗模拟。获得了58 + -17 + e / s（每秒的质子电荷）的正充电速率，并具有最小的Geant4能量阈值，用于通过电磁过程生产次级粒子。该充电速率似乎并不严重依赖于低能二次电子的跟踪，它比以前的模拟中发现的大约5倍。该差异仅部分由本研究中考虑的稍大的证明质量来解释。此数字用于对LISA测试质量所需的放电时间设置新的限制。

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