{"created":"2023-05-15T14:57:09.776559+00:00","id":77570,"links":{},"metadata":{"_buckets":{"deposit":"f7df093a-6d0d-4690-81b5-7fded18e52d4"},"_deposit":{"created_by":1,"id":"77570","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"77570"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00077570","sets":["1"]},"author_link":["1007662","1007663","1007660","1007661","1007664"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"7","bibliographicPageStart":"073001","bibliographicVolumeNumber":"59","bibliographic_titles":[{"bibliographic_title":"Nuclear Fusion"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In many tokamak and stellarator experiments around the globe that are investigating energy\nproduction via controlled thermonuclear fusion, electron cyclotron heating and current　drive (ECH&CD) are used for plasma start-up, heating, non-inductive current drive and magnetohydrodynamic stability control. ECH will be the first auxiliary heating method used on ITER. Megawatt-class, continuous wave gyrotrons are employed as high-power millimeter (mm)-wave sources. The present review reports on the worldwide state-of-the-art of highpower gyrotrons. Their successful development during recent years changed ECH from a minor to a major heating method. After a general introduction of the various functions of ECH&CD in fusion physics, especially for ITER, section 2 will explain the fast-wave gyrotron interaction principle. Section 3 discusses innovations on the components of modern long-pulse fusion gyrotrons (magnetron injection electron gun, beam tunnel, cavity, quasi-optical output coupler, synthetic diamond output window, single-stage depressed collector) and auxiliary components (superconducting magnets, gyrotron diagnostics, high-power calorimetric dummy loads). Section 4 deals with present megawatt-class gyrotrons for ITER, W7-X, LHD, EAST, KSTAR and JT-60SA, and also includes tubes for moderate pulse length machines such as ASDEX-U, DIII-D, HL-2A, TCV, QUEST and GAMMA-10. In section 5 the development of future advanced fusion gyrotrons is discussed. These are tubes with higher frequencies for DEMO, multi-frequency (multi-purpose) gyrotrons, stepwise frequency tunable tubes for plasma stabilization, injection-locked and coaxial-cavity multi-megawatt gyrotrons, as well as sub-THz gyrotrons for collective Thomson scattering. Efficiency enhancement via multi-stage depressed collectors, fast oscillation recovery methods and reliability, availability, maintainability and inspectability will be discussed at the end of this section.","subitem_description_type":"Abstract"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/1741-4326/ab2005","subitem_relation_type_select":"DOI"}}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://iopscience.iop.org/article/10.1088/1741-4326/ab2005/meta","subitem_relation_type_select":"URI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0029-5515","subitem_source_identifier_type":"ISSN"}]},"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":"Thumm, M.K.A."}],"nameIdentifiers":[{"nameIdentifier":"1007660","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Denisov, G.G."}],"nameIdentifiers":[{"nameIdentifier":"1007661","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakamoto, Keishi"}],"nameIdentifiers":[{"nameIdentifier":"1007662","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tran, M.Q."}],"nameIdentifiers":[{"nameIdentifier":"1007663","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Keishi, Sakamoto","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1007664","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"High-power gyrotrons for electron cyclotron heating and current drive","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"High-power gyrotrons for electron cyclotron heating and current drive"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-11-21"},"publish_date":"2019-11-21","publish_status":"0","recid":"77570","relation_version_is_last":true,"title":["High-power gyrotrons for electron cyclotron heating and current drive"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:15:14.695009+00:00"}