用于太阳硬X射线成像观测的双面条带型CZT探测器关键技术研究

作为距离我们最近的恒星，太阳剧烈运动比如耀斑和日冕物质抛射将在从射电到伽马射线全波段产生辐射，有可能对人类的生存环境带来灾害性的影响。通过对太阳发射X射线的观测，可以深入研究太阳耀斑和日冕的低密度源中电子的加速机制，以及粒子爆发与太阳磁场的拓扑关系。.在太阳硬X射线观测领域，广泛应用的观测方法是傅里叶调制间接成像，然而间接成像的动态范围和灵敏度有限，难以对太阳耀斑加速过程的进行深入研究。.本研究将聚焦太阳爆发的X硬射线波段（5-40keV），探索应用双面条带型CZT探测器对太阳爆发进行直接成像观测的关键技术，包括成像级CZT探测器的封装方案、多通道低噪声的探测器读出电子学系统的设计和能谱解析优化算法的开发，为未来我国太阳空间成像望远镜提供技术探索和积累。

As the closest star to us, the Sun's violent motions such as flares and coronal mass ejections (CMEs) will emit particle streams in the full wavelength range from radio to gamma rays, with potentially catastrophic effects on our living earth. Observations on solar emission X-ray are probes for the acceleration mechanisms of electrons in solar flares and low-density sources in the corona, and the topological relationship between particle bursts and the solar magnetic field..In the field of solar hard X-ray observations, one of the most widely used observation methods is Fourier modulated indirect imaging, however, the dynamic range and sensitivity of indirect imaging is limited, making it difficult to investigate the solar flare acceleration process..This study will focus on the solar outburst in hard X-ray (5-40 keV) range and explore the key techniques for direct imaging and observing the solar outburst by applying CZT double-sided strip detector. This study including the packaging technique for CZT detector, the design of a multi-channel low-noise detector readout electronics system and the development of optimized spectrum algorithm. This study will provide valuable technical reserves for future solar hard X-ary imaging telescopes in China.