HATSUKADE Isamu

写真a

Affiliation

Engineering educational research section Information and Communication Technology Program

Title

Professor

External Link

Degree 【 display / non-display

  • Doctor of Science ( 1989.6   Osaka University )

Research Areas 【 display / non-display

  • Natural Science / Astronomy

 

Papers 【 display / non-display

  • Experimental studies on the charge transfer inefficiency of CCD developed for the soft X-ray imaging telescope Xtend aboard the XRISM satellite Reviewed

    Kanemaru Y., Sato J., Takaki T., Terada Y., Mori K., Saito M., Nobukawa K.K., Tanaka T., Uchida H., Hayashida K., Matsumoto H., Noda H., Hanaoka M., Yoneyama T., Okazaki K., Asakura K., Sakuma S., Hattori K., Ishikura A., Amano Y., Okon H., Tsuru T.G., Tomida H., Kashimura H., Nakajima H., Kohmura T., Hagino K., Murakami H., Kobayashi S.B., Nishioka Y., Yamauchi M., Hatsukade I., Sako T., Nobukawa M., Urabe Y., Hiraga J.S., Uchiyama H., Yamaoka K., Ozaki M., Dotani T., Tsunemi H.

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   984   2020.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment  

    We present experimental studies on the charge transfer inefficiency (CTI) of charge-coupled device (CCD) developed for the soft X-ray imaging telescope, Xtend, aboard the XRISM satellite. The CCD is equipped with a charge injection (CI) capability, in which sacrificial charge is periodically injected to fill the charge traps. By evaluating the re-emission of the trapped charge observed behind the CI rows, we find that there are at least three trap populations with different time constants. The traps with the shortest time constant, which is equivalent to a transfer time of approximately one pixel, are mainly responsible for the trailing charge of an X-ray event seen in the following pixel. A comparison of the trailing charge in two clocking modes reveals that the CTI depends not only on the transfer time but also on the area, namely the imaging or storage area. We construct a new CTI model by taking into account both transfer-time and area dependence. This model reproduces the data obtained in both clocking modes consistently. We also examine apparent flux dependence of the CTI observed without the CI technique. The higher incident X-ray flux is, the lower the CTI value becomes. It is due to a sacrificial charge effect by another X-ray photon. This effect is found to be negligible when the CI technique is used.

    DOI: 10.1016/j.nima.2020.164646

    Scopus

  • Optical blocking performance of CCDs developed for the X-ray Astronomy Satellite XRISM Reviewed

    Uchida H., Tanaka T., Amano Y., Okon H., Tsuru T.G., Nakajima H., Noda H., Hayashida K., Matsumoto H., Hanaoka M., Yoneyama T., Okazaki K., Asakura K., Sakuma S., Hattori K., Ishikura A., Saito M., Nobukawa K.K., Tomida H., Kanemaru Y., Sato J., Takaki T., Terada Y., Mori K., Kashimura H., Kohmura T., Hagino K., Murakami H., Kobayashi S.B., Nishioka Y., Yamauchi M., Hatsukade I., Sako T., Nobukawa M., Urabe Y., Hiraga J.S., Uchiyama H., Yamaoka K., Ozaki M., Dotani T., Tsunemi H., Suzuki H., Takagi S.i., Sugimoto K., Atsumi S., Tanaka F.

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   978   2020.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment  

    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 phenomenon of “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: 10.1016/j.nima.2020.164374

    Scopus

  • Status of X-Ray imaging and spectroscopy mission (XRISM)

    Tashiro M., Maejima H., Toda K., Kelley R., Reichenthal L., Hartz L., Petre R., Williams B., Guainazzi M., Costantini E., Fujimoto R., Hayashida K., Henegar-Leon J., Holland M., Ishisaki Y., Kilbourne C., Loewenstein M., Matsushita K., Mori K., Okajima T., Scott Porter F., Sneiderman G., Takei Y., Terada Y., Tomida H., Yamaguchi H., Watanabe S., Akamatsu H., Arai Y., Audard M., Awaki H., Babyk I., Bamba A., Bando N., Behar E., Bialas T., Boissay-Malaquin R., Brenneman L., Brown G., Canavan E., Chiao M., Comber B., Corrales L., Cumbee R., de Vries C., Den Herder J.W., Dercksen J., Diaz-Trigo M., DiPirro M., Done C., Dotani T., Ebisawa K., Eckart M., Eckert D., Eguchi S., Enoto T., Ezoe Y., Ferrigno C., Fujita Y., Fukazawa Y., Furuzawa A., Gallo L., Gorter N., Grim M., Gu L., Hagino K., Hamaguchi K., Hatsukade I., Hawthorn D., Hayashi K., Hell N., Hiraga J., Hodges-Kluck E., Horiuchi T., Hornschemeier A., Hoshino A., Ichinohe Y., Iga S., Iizuka R., Ishida M., Ishihama N., Ishikawa K., Ishimura K., Jaffe T., Kaastra J., Kallman T., Kara E., Katsuda S., Kenyon S., Kimball M., Kitaguchi T., Kitamoto S., Kobayashi S., Kobayashi A., Kohmura T., Kubota A., Leutenegger M., Li M., Lockard T., Maeda Y.

    Proceedings of SPIE - The International Society for Optical Engineering   11444   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Proceedings of SPIE - The International Society for Optical Engineering  

    The X-Ray Imaging and Spectroscopy Mission (XRISM) is the successor to the 2016 Hitomi mission that ended prematurely. Like Hitomi, the primary science goals are to examine astrophysical problems with precise high-resolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. XRISM carries a 6 x 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly and a co-aligned X-ray CCD camera that covers the same energy band over a large field of view. XRISM utilizes Hitomi heritage, but all designs were reviewed. The attitude and orbit control system were improved in hardware and software. The number of star sensors were increased from two to three to improve coverage and robustness in onboard attitude determination and to obtain a wider field of view sun sensor. The fault detection, isolation, and reconfiguration (FDIR) system was carefully examined and reconfigured. Together with a planned increase of ground support stations, the survivability of the spacecraft is significantly improved.

    DOI: 10.1117/12.2565812

    Scopus

  • Soft X-ray imager (SXI) for Xtend onboard X-Ray imaging and spectroscopy mission (XRISM)

    Nakajima H., Hayashida K., Tomida H., Mori K., Noda H., Matsumoto H., Yoneyama T., Okazaki K., Asakura K., Hanaoka M., Hattori K., Ishikura A., Sakuma S., Tanaka T., Uchida H., Tsuru T., Amano Y., Okon H., Yamauchi M., Hatsukade I., Nishioka Y., Kanemaru Y., Sato J., Takaki T., Terada Y., Yoshida T., Kohmura T., Hagino K., Kobayashi S., Murakami H., Kashimura H., Uchiyama H., Yamaoka K., Nobukawa M., Sako T., Nobukawa K., Saito M., Hiraga J., Urabe Y., Yoshida M., Dotani T., Ozaki M., Tsunemi H.

    Proceedings of SPIE - The International Society for Optical Engineering   11444   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Proceedings of SPIE - The International Society for Optical Engineering  

    Soft X-ray Imager (SXI) is the X-ray CCD camera onboard X-Ray Imaging and Spectroscopy Mission (XRISM) that is scheduled to be launched in Japanese fiscal year 2022. Combining the SXI with an X-ray mirror assembly, we realize the Soft X-ray Imaging Telescope (Xtend) with a focal length of 5.6 m and a field of view of 38 arcmin square. The high quantum efficiency of the focal-plane sensor, P-channel back-illumination type CCD, brings about the wide effective energy range from 0.4 to 13 keV with moderate energy resolution. Although the design of the SXI for XRISM is basically identical to that for Hitomi satellite, we have applied several improvements to the CCDs in terms of the charge transfer inefficiency (CTI) and the optical blocking performance. For the former issue, we introduce a notch implant in the charge transfer path to reduce the CTI increase in orbit. For the latter, we change the design of aluminum layers on the incident surface of the CCDs to decrease incoming visible light and/or infrared. Four flight model (FM) CCDs have been selected considering several items including energy resolution at 5.9 keV, CTI, dark current, etc. We have also completed calibration campaign for all the FM CCDs. Initial analyses show that the response function for monochromatic X-rays is basically the same as that of Hitomi CCDs. Front-end ASIC have been confirmed to properly function even after the long-term storage after the manufacture for Hitomi SXI. Then the analog electronics for driving CCDs and for processing the output analog signals have been implemented. Their functional tests have been completed with no problem. The focal plane including the single-stage Stirling cooler has been assembled. Production of key parts in SXI sensor body such as contamination blocking filter and onboard calibration source has been finished and they are waiting for assemble. The digitized signals of the CCD are corrected step by step before conversion to X-ray energy. We are preparing calibration database for the correction such as CTI, gain, and line redistribution function.

    DOI: 10.1117/12.2560348

    Scopus

  • Radiation hardness of a p-channel notch CCD developed for the X-ray CCD camera onboard the XRISM satellite Reviewed

    Kanemaru, Y., Sato, J., Mori, K., et al.

    Journal of Instrumentation   14 ( 4 )   1 - 10   2019.4

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    Language:English   Publishing type:Research paper (scientific journal)  

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MISC 【 display / non-display

  • ビデオ流星観測システムの開発と流星の自動検出

    稲田憲哉、船倉さやか、松本陽子、廿日出勇

    情報処理学会九州支部「火の国シンポジウム2003」A-1-4   2003.3

  • H_{0} Determination Using X-ray Cluster of Galaxies A773

    共著者:M.Matsuura, S.Miyoshi, K.Yamashita, Y.Tawara, A.Furuzawa, A.N.Lasenby, R.Saunders, M.Jones, I.Hatsukade

    京都産業大学論集 28巻59-71頁   1997.3

  • SS433の時間変動の研究

    共著者:松岡宏志、高岸邦夫、廿日出勇

    宮崎大学工学部研究報告40号65-69頁   1994.8

  • 天体観測用CCDカメラ制御、データ処理システム

    共著者:高岸邦夫、廿日出勇、黒木隆

    宮崎大学工学部研究報告39号39-45頁   1993.8

  • Near-nucleus imaging observations of comet Austin

    共著者:J.Watanabe, S.Ichikawa, K.Takagishi, I.Hatsukade, M.Sakai, 他5名

    Publications of National AstronomicalObservatory of Japan, Vol.2, 267-292   1991.6

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Presentations 【 display / non-display

  • X線分光撮像衛星XRISM搭載軟X線撮像装置Xtendの開発の状況 (9)

    内田裕之、萩野浩一、野田博文、林田清 他

    日本物理学会第77回年次大会(2022年)  2022.3.17 

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    Event date: 2022.3.15 - 2022.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

  • X 線分光撮像衛星 (XRISM) 搭載軟 X 線撮像装置 (Xtend) の開発の現状 (7)

    萩野浩一、内田裕之、野田博文、林田清 他

    日本天文学会2022年春季年会  2022.3.5 

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    Event date: 2022.3.2 - 2022.3.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  • X線分光撮像衛星(XRISM)搭載Xtendの開発状況

    冨田洋、尾崎正伸、堂谷忠靖、石田学 他

    第22回 宇宙科学シンポジウム  2202.1.6 

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    Event date: 2022.1.6 - 2202.1.7

    Language:Japanese   Presentation type:Poster presentation  

  • X線分光撮像衛星XRISM搭載軟X線撮像装置Xtendの開発の状況 (8)

    田中孝明、野田博文、林田清、冨田洋 他

    日本物理学会2021年秋季大会  2021.9.16 

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    Event date: 2021.9.14 - 2021.9.17

    Language:Japanese   Presentation type:Oral presentation (general)  

  • X 線分光撮像衛星 (XRISM) 搭載軟 X 線撮像装置 (Xtend) の開発の現状 (6)

    冨田洋、林田清、森浩二、中嶋大 他

    日本天文学会2021年秋季年会  2021.9.13 

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    Event date: 2021.9.13 - 2021.9.15

    Language:Japanese   Presentation type:Oral presentation (general)  

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 人工衛星および地上観測によるガンマ線バースト・X線フラッシュの研究

    2007.04 - 2008.03

    科学研究費補助金  基盤研究(C)

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    宮崎大学に設置されたHETE-2に連動する自動制御望遠鏡(RIMOTS)を運用し、γ線バーストの残光観測を行っている。

  • 広視野・高時間分解能観測システムを用いたγ線バースト閃光の研究

    2006.04 - 2007.03

    科学研究費補助金  基盤研究(C)

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    これまで観測が行われていないGRB発生前後の残光観測を行うために、広視野を高時間分解能で常時観測する観測システム、Miyazaki Wide-field Monitor(MWM)を開発した。

  • 人工衛星および地上観測によるガンマ線バースト・X線フラッシュの研究

    2006.04 - 2007.03

    科学研究費補助金  基盤研究(C)

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    宮崎大学に設置されたHETE-2に連動する自動制御望遠鏡(RIMOTS)を運用し、γ線バーストの残光観測を行っている。

  • 人工衛星および地上観測によるガンマ線バースト・X線フラッシュの研究

    2005.04 - 2006.03

    科学研究費補助金  基盤研究(C)

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    宮崎大学に設置されたHETE-2に連動する自動制御望遠鏡(RIMOTS)を運用し、γ線バーストの残光観測を行っている。

  • 広視野・高時間分解能観測システムを用いたγ線バースト閃光の研究

    2005.04 - 2006.03

    科学研究費補助金  基盤研究(C)

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