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The fifth-stage twist pitches of these conductors were\nlengthened by approximately 16% during cable insertion and\ncompaction with conduit. The current sharing temperatures Tcs\nwere measured over 20 000 electromagnetic cycles, including four\nthermal cycles between 4.2 K and room temperature. The Tcs\nof the former conductor increased and became almost constant\nthrough the cycling. In contrast, Tcs of the latter conductor not\nonly increased but also decreased slightly against cycling. The Tcs\ndecline rate after 10 002 cycles was −4.50 × 10−6 K/cycle. If this\nrate is assumed to continue after 20 000 cycles, Tcs would decrease\nby −0.27 K over 60 000 cycles. Even so, Tcs is higher than an\nacceptance criterion of 6.5 K at 60 000 cycles. The ac losses Q\nof both conductors at a current of 0 kA were almost the same\nas or slightly lower than Q of a short sample conductor whose\nfifth-stage twist pitch was not lengthen. On each conductor, Q at\n40 kA was approximately 10% higher than that at 0 kA; thus, the\neffect of the transport current on Q was not large.", "subitem_description_type": "Abstract"}]}, "item_8_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY"}]}, "item_8_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1109/TASC.2016.2518640", "subitem_relation_type_select": "DOI"}}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "metadata only access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_14cb"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "名原, 啓博"}], "nameIdentifiers": [{"nameIdentifier": "890812", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "諏訪, 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Performance Analysis of Mass-Produced Nb3Sn Conductor for Central Solenoid in ITER
https://repo.qst.go.jp/records/48243
https://repo.qst.go.jp/records/48243e711097f-2da4-4c7a-a93d-d564133103cf
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-03-27 | |||||
タイトル | ||||||
タイトル | Performance Analysis of Mass-Produced Nb3Sn Conductor for Central Solenoid in ITER | |||||
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_6501 | |||||
資源タイプ | journal article | |||||
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 |
名原, 啓博
× 名原, 啓博× 諏訪, 友音× 尾関, 秀将× 梶田, 秀樹× 櫻井, 武尊× 辺見, 努× 井口, 将秀× 布谷, 嘉彦× 高橋, 良和× 礒野, 高明× 松井, 邦浩× 小泉, 徳潔× 堤, 史明× 宇野, 康弘× 押切, 雅幸× 渋谷, 和幸× 奥野, 清× 村上, 幸伸× 高野, 剛志× Sedlak, Kamil× Stepanov, Boris× Bruzzone, Pieruigi× Suwa, Tomone× Ozeki, Hidemasa× Kajitani, Hideki× Sakurai, Takeru× Hemmi, Tsutomu× Iguchi, Masahide× Nunoya, Yoshihiko× Takahashi, Yoshikazu× Isono, Takaaki× Matsui, Kunihiro× Koizumi, Norikiyo× Tsutsumi, Fumiaki× Uno, Yasuhiro× Oshikiri, Masayuki× Okuno, Kiyoshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The performance of two mass-produced Nb3Sn conductors for the ITER central solenoids was tested for the first time. One was cut from the forward end of an 80-m-long conductor, and the other was cut from the forward end of a 918-m-long conductor. The fifth-stage twist pitches of these conductors were lengthened by approximately 16% during cable insertion and compaction with conduit. The current sharing temperatures Tcs were measured over 20 000 electromagnetic cycles, including four thermal cycles between 4.2 K and room temperature. The Tcs of the former conductor increased and became almost constant through the cycling. In contrast, Tcs of the latter conductor not only increased but also decreased slightly against cycling. The Tcs decline rate after 10 002 cycles was −4.50 × 10−6 K/cycle. If this rate is assumed to continue after 20 000 cycles, Tcs would decrease by −0.27 K over 60 000 cycles. Even so, Tcs is higher than an acceptance criterion of 6.5 K at 60 000 cycles. The ac losses Q of both conductors at a current of 0 kA were almost the same as or slightly lower than Q of a short sample conductor whose fifth-stage twist pitch was not lengthen. On each conductor, Q at 40 kA was approximately 10% higher than that at 0 kA; thus, the effect of the transport current on Q was not large. |
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書誌情報 |
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 巻 26, 号 4, p. 4200705-1-4200705-5, 発行日 2017-03 |
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出版者 | ||||||
出版者 | TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1109/TASC.2016.2518640 |