空间太阳硬X射线成像仪量能器读出电子学设计
Design of the Readout Electronics for Solar Hard X-ray Imager
-
摘要: 先进天基太阳天文台(ASO-S)是中国科学院空间科学先导专项2期规划的太阳观测卫星, 其针对第25个太阳活动峰年, 同时观测太阳磁场、日冕物质抛射和太阳耀斑爆发. 硬X射线成像仪(HXI)作为该卫星3个科学载荷之一, 实现了高时间分辨率和空间分辨率的太阳硬X射线成像观测, 其量能器由99套溴化镧闪烁晶体-光电倍增管探测单元和读出电子学板构成, 实现了30--200keV的硬X射线光子能谱测量. 针对HXI量能器的观测需求, 设计了一套空间高事例率读出电子学系统, 并通过实验室测试, 证明了该系统单事例读出死时间小于2μs, 同时验证了该系统电子学噪声小于120fC, 积分非线性小于2%, 满足HXI仪器要求.Abstract: The Advanced Space-based Solar Observatory (ASO-S) is the first Chinese solar mission of Chinese Academy of Science, aimed at the 25th solar maximum. ASO-S is expected to observe solar magnetic field, coronal mass ejections (CMEs), and solar flares at the same time. Hard X-ray Imager (HXI) is one of the 3 payloads on board of ASO-S, providing solar X-ray image with high resolution in both time and position. The calorimeter in HXI consists of 99 \ceLaBr3
下载: