为X射线天文学卫星Xrism开发的CCD的光学阻断性能

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为X射线天文学卫星Xrism开发的CCD的光学阻断性能

Optical Blocking Performance of CCDs Developed for the X-ray Astronomy Satellite XRISM

论文作者

Uchida, Hiroyuki, Tanaka, Takaaki, Amano, Yuki, Okon, Hiromichi, Tsuru, Takeshi G., Noda, Hirofumi, Hayashida, Kiyoshi, Matsumoto, Hironori, Hanaoka, Maho, Yoneyama, Tomokage, Okazaki, Koki, Asakura, Kazunori, Sakuma, Shotaro, Hattori, Kengo, Ishikura, Ayami, Nakajima, Hiroshi, Saito, Mariko, Nobukawa, Kumiko K., Tomida, Hiroshi, Kanemaru, Yoshiaki, Sato, Jin, Takaki, Toshiyuki, Terada, Yuta, Mori, Koji, Kashimura, Hikari, Kohmura, Takayoshi, Hagino, Kouichi, Murakami, Hiroshi, Kobayashi, Shogo B., Nishioka, Yusuke, Yamauchi, Makoto, Hatsukade, Isamu, Sako, Takashi, Nobukawa, Masayoshi, Urabe, Yukino, Hiraga, Junko S., Uchiyama, Hideki, Yamaoka, Kazutaka, Ozaki, Masanobu, Dotani, Tadayasu, Tsunemi, Hiroshi, Suzuki, Hisanori, Takagi, Shin-ichiro, Sugimoto, Kenichi, Atsumi, Sho, Tanaka, Fumiya

论文摘要

我们一直在为即将到来的X射线天文学XRISM开发P通道充电耦合设备（CCD），计划于2021年推出。虽然CCD摄像头的基本设计（软X射线成像器：SXI）几乎与失去的hitomi（astro-h）的漏洞相同，而漏洞的漏洞是漏洞的漏洞，而漏洞的漏洞是“一片漏洞”。数据。我们在Xrism CCD上采用了双层光学阻滞层，并在其背面增加了一个额外的铝层。我们开发了新设计的测试样品CCD，并用光学光照射它，以评估光学阻滞性能。结果，与Hitomi CCD相比，光泄漏有效地降低了。因此，我们得出的结论是，该问题是由新设计解决的，并且Xrism CCD满足了SXI的任务要求。

We have been developing P-channel Charge-Coupled Devices (CCDs) for the upcoming X-ray Astronomy Satellite XRISM, planned to be launched in 2021. While the basic design of the CCD camera (Soft X-ray Imager: SXI) is almost the same as that of the lost Hitomi (ASTRO-H) observatory, we are planning to reduce the "light leakages" that is one of the largest problems recognized in Hitomi data. We adopted a double-layer optical blocking layer on the XRISM CCDs and also added an extra aluminum layer on the backside of them. We develop a newly designed test sample CCD and irradiate it with optical light to evaluate the optical blocking performance. As a result, light leakages are effectively reduced compared with that of the Hitomi CCDs. We thus conclude that the issue is solved by the new design and that the XRISM CCDs satisfy the mission requirement for the SXI.

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