天文仪器中的辐射诱导本底：地球同步轨道的考虑和WFIRST宽场仪器设计的意义
Radiation-Induced Backgrounds in Astronomical Instruments: Considerations for Geo-synchronous Orbit and Implications for the Design of the WFIRST Wide-Field Instrument
摘要：
地球同步轨道对太阳或天体物理观测站很有吸引力，因为它们允许以高速率连续下行数据。然而，这些轨道的辐射环境提出了独特的挑战。本文介绍了地球同步轨道辐射环境的特点及其在光子探测器中产生背景的机理。介绍了屏蔽考虑因素，并提出了拟议的宽视场红外巡天望远镜天文台的初步屏蔽设计，作为今后考虑地球同步轨道的空间望远镜概念研究的参考。
英文摘要：
Geo-Synchronous orbits are appealing for Solar or astrophysical observatories because they permit continuous data downlink at high rates. The radiation environment in these orbits presents unique challenges, however. This paper describes both the characteristics of the radiation environment in Geo-Synchronous orbit and the mechanisms by which this radiation generates backgrounds in photon detectors. Shielding considerations are described, and a preliminary shielding design for the proposed Wide-Field InfraRed Survey Telescope observatory is presented as a reference for future space telescope concept studies that consider a Geo-Synchronous orbit.
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