Optical Blocking Performance of CCDs Developed for the X-ray Astronomy Satellite XRISM
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...
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| creator | 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 |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.2007.07608 |
| format | Article |
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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. 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We thus conclude that the issue is solved by the new design and that the XRISM CCDs satisfy the mission requirement for the SXI.</description><subject>Aluminum</subject><subject>CCD cameras</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Soft x rays</subject><subject>X-ray astronomy</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNotj11LwzAYhYMgOOZ-gFcGvO5M3jRNdjk7PwaTiRviXUnbN9rZNjXthv331s2rc3EeDuch5IqzaailZLfG_xSHKTCmpkxFTJ-REQjBAx0CXJBJ2-4YYxApkFKMyNu66YrMlPSudNlXUX_QF_TW-crUGVJnaRwvWrrAA5auwZwOFe0-kb4H3vR03nbe1a7q6cZ0WJZFNzSvy83zJTm3pmxx8p9jsn2438ZPwWr9uIznq8BI0EGkBUidA8zSHMMUDZOZtlLNIrQCME1VxgGV5Rp0rphNMx6llhvOuWAiRzEm16fZo3TS-KIyvk_-5JOj_EDcnIjGu-89tl2yc3tfD58SCCGUkWYD9QsF3Vvk</recordid><startdate>20200716</startdate><enddate>20200716</enddate><creator>Uchida, 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Hikari</au><au>Kohmura, Takayoshi</au><au>Hagino, Kouichi</au><au>Murakami, Hiroshi</au><au>Kobayashi, Shogo B</au><au>Nishioka, Yusuke</au><au>Yamauchi, Makoto</au><au>Hatsukade, Isamu</au><au>Sako, Takashi</au><au>Nobukawa, Masayoshi</au><au>Urabe, Yukino</au><au>Hiraga, Junko S</au><au>Uchiyama, Hideki</au><au>Yamaoka, Kazutaka</au><au>Ozaki, Masanobu</au><au>Dotani, Tadayasu</au><au>Tsunemi, Hiroshi</au><au>Suzuki, Hisanori</au><au>Takagi, Shin-ichiro</au><au>Sugimoto, Kenichi</au><au>Atsumi, Sho</au><au>Tanaka, Fumiya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical Blocking Performance of CCDs Developed for the X-ray Astronomy Satellite XRISM</atitle><jtitle>arXiv.org</jtitle><date>2020-07-16</date><risdate>2020</risdate><eissn>2331-8422</eissn><abstract>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.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2007.07608</doi><oa>free_for_read</oa></addata></record> |
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| source | arXiv.org; Free E- Journals |
| subjects | Aluminum CCD cameras Physics - Instrumentation and Methods for Astrophysics Soft x rays X-ray astronomy |
| title | Optical Blocking Performance of CCDs Developed for the X-ray Astronomy Satellite XRISM |
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