用于立方体卫星太阳偏振计（CUSP）任务的雪崩光电二极管（APD）特性表征
Characterization of avalanche photodiodes (APDs) for the CUbesat Solar Polarimeter (CUSP) mission
AI总结：
本文针对CUSP立方体卫星太阳偏振计任务，系统表征了用于康普顿偏振计吸收级的雪崩光电二极管（APD），通过55Fe放射源测试了其增益和能量分辨率随温度的变化，并评估了APD与GAGG闪烁体耦合的性能，为任务B阶段研究提供关键器件参数。
摘要：
立方体卫星太阳偏振计（CUSP）项目是一项绕地球运行的CubeSat任务，旨在通过康普顿散射偏振计测量硬X射线波段太阳耀斑的线偏振。CUSP将使我们能够研究太阳耀斑磁结构中的磁重联和粒子加速过程。CUSP是意大利航天局Alcor计划框架下的一个项目，旨在开发新的CubeSat任务，目前已获准进行B阶段研究。在这项工作中，我们报告了将用作康普顿偏振计吸收级读出传感器的雪崩光电二极管（APD）的特性表征结果。我们通过使用55Fe放射性源照射传感器，评估了APD的增益和能量分辨率随温度的变化关系。此外，我们还对APD与GAGG闪烁体耦合时的性能进行了表征。
英文摘要：
The CUbesat Solar Polarimeter (CUSP) project is a CubeSat mission orbiting the Earth aimed to measure the linear polarization of solar flares in the hard X-ray band by means of a Compton scattering polarimeter. CUSP will allow the study of the magnetic reconnection and particle acceleration in the flaring magnetic structures of our star. CUSP is a project in the framework of the Alcor Program of the Italian Space Agency aimed at developing new CubeSat missions. It is approved for a Phase B study. In this work, we report on the characterization of the Avalanche Photodiodes (APDs) that will be used as readout sensors of the absorption stage of the Compton polarimeter. We assessed the APDs gain and energy resolution as a function of temperature by irradiating the sensor with a \textsuperscript{55}Fe radioactive source. Moreover, the APDs were also characterized as being coupled to a GAGG scintillator.
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