Development of Infrared Detector for Astronomical Camera in Space

与三菱电机公司合作，对PtSi肖特基势垒CSD装置在极低温下进行了评估。在该测量中，最重要的一点是测量器件在不同条件下电荷转移效率（CTE）的变化，同时最小化器件的读出噪声也很重要。同时用质子束辐照和东京大学60Co射线辐照损伤后测量了CTE。这些测量是在各种条件下进行的，包括几种温度，器件的驱动模式，以及在CCD器件中电子很少的非常黑暗的情况下。通过我们的测量，我们找到了最适合行星探测器的设计，并实际选择了设计的设备用于PLANET-C/VCO任务。该装置的优异性能使我们能够在任务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.