Collinson Glyn A, McFadden James P, Chornay Dennis J, Gershman Daniel, Moore Thomas E
Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA.
Space Sciences Laboratory, University of California, Berkeley, California, USA.
J Geophys Res Space Phys. 2016 Aug;121(8):7887-7894. doi: 10.1002/2016ja022590. Epub 2016 Aug 24.
A common feature of top hat space plasma analyzers are electrostatic "deflector plates" mounted externally to the aperture which steer the incoming particles and permit the sensor to rapidly scan the sky without moving. However, the electric fields generated by these plates can penetrate the mesh or grid on the outside of the sensor, potentially violating spacecraft electromagnetic cleanliness requirements. In this brief report we discuss how this issue was addressed for the Dual Electron Spectrometer for the Magnetospheric Multiscale Mission using a double-grid system and the simple modeling technique employed to assure the safe containment of the stray fields from its deflector plates.
顶帽式空间等离子体分析仪的一个共同特点是，在孔径外部安装有静电“偏转板”，这些偏转板可引导入射粒子，使传感器无需移动就能快速扫描天空。然而，这些板产生的电场会穿透传感器外部的网或栅格，这可能会违反航天器电磁洁净度要求。在本简要报告中，我们将讨论如何通过使用双栅格系统以及为确保磁层多尺度任务双电子谱仪中偏转板杂散场的安全抑制而采用的简单建模技术来解决这一问题。
