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Gamma ray irradiation effects on optical elements of ITER diverter impurity monitor

https://repo.qst.go.jp/records/74823
https://repo.qst.go.jp/records/74823
5961fb22-daa8-4a0f-a868-4715f8b4f555
Item type 会議発表用資料 / Presentation(1)
公開日 2018-10-18
タイトル
タイトル Gamma ray irradiation effects on optical elements of ITER diverter impurity monitor
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_c94f
資源タイプ conference object
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Sin-iti, KITAZAWA

× Sin-iti, KITAZAWA

WEKO 734397

Sin-iti, KITAZAWA

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YOKOZUKA, Tomohiro

× YOKOZUKA, Tomohiro

WEKO 734398

YOKOZUKA, Tomohiro

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小川, 宏明

× 小川, 宏明

WEKO 734399

小川, 宏明

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丸山, 敏征

× 丸山, 敏征

WEKO 734400

丸山, 敏征

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田中, 優

× 田中, 優

WEKO 734401

田中, 優

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及川, 聡洋

× 及川, 聡洋

WEKO 734402

及川, 聡洋

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Kitazawa, Shinichi

× Kitazawa, Shinichi

WEKO 734403

en Kitazawa, Shinichi

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Yokozuka, Tomohiro

× Yokozuka, Tomohiro

WEKO 734404

en Yokozuka, Tomohiro

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Ogawa, Hiroaki

× Ogawa, Hiroaki

WEKO 734405

en Ogawa, Hiroaki

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Maruyama, Toshiyuki

× Maruyama, Toshiyuki

WEKO 734406

en Maruyama, Toshiyuki

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Tanaka, Suguru

× Tanaka, Suguru

WEKO 734407

en Tanaka, Suguru

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Oikawa, Toshihiro

× Oikawa, Toshihiro

WEKO 734408

en Oikawa, Toshihiro

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抄録
内容記述タイプ Abstract
内容記述 ITER divertor impurity monitor (DIM) is a diagnostic system that directly observes light from nuclear fusion plasma in the range of 200-1000 nm. Since DIM observes wide range from infrared to ultraviolet with single optical system, high optical performance such as spatial resolution and aberration is required for optical elements. In addition, it must be highly robustness against external environments such as toughness, temperature, humidity, vibration, magnetic field. Because of its high radiation environment, it is necessary to use a component with high radiation resistance. In this study, the optical elements of the DIM installed in the interspaces and the port cells were investigated, because the gamma ray irradiation effects on those elements are greatly dominant for their robustness. Irradiation experiments were conducted at Gamma-ray irradiation facilities at QST, Takasaki. The dose rates were 0.1 to 10 kGy / h, taking into account the actual rate at ITER and the time required for the experiment. For the glass materials, quartz (SiO2) and fluorite (CaF2) pair lenses which were designed to be installed in interspace as relay lenses in the preliminary design were evaluated. We also conducted irradiation experiments on glass materials used for spectroscopes installed in port cells. For these experimental results, we obtain information necessary for proceeding the design of ITER DIM.
会議概要(会議名, 開催地, 会期, 主催者等)
内容記述タイプ Other
内容記述 The 27th International Toki Conference on Plasma and Fusion Research & The 13th Asia Pacific Plasma Theory Conference
発表年月日
日付 2018-11-19
日付タイプ Issued
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