Development of Infrared Detector for Astronomical Camera in Space

与三菱电机公司合作，在极低温度下对PtSi肖特基势垒CSD器件进行了评估。在这种测量中最重要的事情之一是在几种条件下器件的电荷转移效率（CTE）的变化，并且最小化器件的读出噪声也很重要。在HIMAC中测量了质子束辐射损伤后的CTE，在东京大学测量了60 Co γ射线辐射损伤后的CTE。这些测量是在各种条件下进行的，包括几个温度，设备的驱动模式，并在非常黑暗的情况下，在CCD设备中的电子非常少。通过测量，我们找到了最适合行星探测器的探测器设计方案，并实际应用于PLANET-C/VCO使命探测器。该设备的出色性能使我们能够在使命的巡航阶段对黄道光进行观测。

An evaluation of PtSi Schottky Barrier CSD device at very low temperature was done under collaboration with Mitsubishi Electric Company. One of the most important thing in this measurement is the variation of the charge transfer efficiency (CTE) of the device under several conditions, and it is also important to minimize the read-out noise of the device. The CTE was also measured after the radiation damage by proton beam in HIMAC as well as by gamma ray of 60Co at University of Tokyo. These measurements were performed under various conditions including several temperature, driving mode of the device, and under the very dark situation with very few electrons in the CCD device. Using our measurements, we find out the most suitable design for the detector for a planetary explorer, and actually the designed device is selected for the one for PLANET-C/VCO mission. The excellent performance of the device enables us to conduct observations of the zodiacal light during the cruising phase of the mission.