{"created":"2023-06-20T15:17:25.276127+00:00","id":11311,"links":{},"metadata":{"_buckets":{"deposit":"3c14976a-dfef-44ba-a4f6-a34bbe726e7c"},"_deposit":{"created_by":20,"id":"11311","owners":[20],"pid":{"revision_id":0,"type":"depid","value":"11311"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00011311","sets":["6:7"]},"author_link":["66594","66600","67056","127600","66751","66551","127601","127603","127602","67058"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-06-19","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"1406104","bibliographicVolumeNumber":"14","bibliographic_titles":[{"bibliographic_title":"Plasma and Fusion Research "}]}]},"item_10001_description_4":{"attribute_name":"著者ID","attribute_value_mlt":[{"subitem_description":"0000-0003-3269-517X","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A high power sub-THz pulsed gyrotron with a frequency of 303 GHz has been developed for use as the power source of the collective Thomson scattering (CTS) diagnostics in the Large Helical Device (LHD) at the National Institute for Fusion Science. Based on careful design considerations, a whispering gallery mode TE22,2 was adopted to avoid mode competition. More than 320 kW was attained with single-mode oscillation. The spectrum of the oscillation frequency is very narrow and stable during the entire pulse duration for pulse widths up to 100 μs. No parasitic mode is excited at the turn-on and turn-off phases nor during the steady state of the oscillation pulse. In addition to the adoption of the whispering gallery mode, a fast but finite rise time of the beam voltage is an important role for the realization of single-mode oscillation. Self-consistent calculations show that, for the finite voltage rise time corresponding to the present experiment, gradual evolution to the high power regime is attained from backward wave oscillation. This high power regime corresponds to the hard self-excitation region in the case of instantaneous voltage rise.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Japan Society of Plasma Science and Nuclear Fusion Research "}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1585/pfr.14.1406104 ","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Publisher version"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1585/pfr.14.1406104","subitem_relation_type_select":"DOI"}}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"(c) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research "}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12346675","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880-6821","subitem_source_identifier_type":"ISSN"}]},"item_10001_text_23":{"attribute_name":"NAIS","attribute_value_mlt":[{"subitem_text_value":"12001"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"SAITO,  Teruo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"TANAKA, Shunsuke"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"SHINBAYASHI, Ryuji"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"TATEMATSU,  Yoshinori"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"YAMAGUCHI, Yuusuke"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"FUKUNARI, Masafumi"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"KUBO,  Shin"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"SHIMOZUMA,  Takashi"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"TANAKA,  Kenji"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"NISHIURA,  Masaki"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-06-17"}],"displaytype":"detail","filename":"12001_PFR.pdf","filesize":[{"value":"1.7 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"12001_PFR","url":"https://nifs-repository.repo.nii.ac.jp/record/11311/files/12001_PFR.pdf"},"version_id":"01ffece9-7c37-4cab-bbde-153ab944ba08"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Sub-THz gyrotron","subitem_subject_scheme":"Other"},{"subitem_subject":"whispering gallery mode","subitem_subject_scheme":"Other"},{"subitem_subject":"single-mode oscillation","subitem_subject_scheme":"Other"},{"subitem_subject":"collective Thomson scattering","subitem_subject_scheme":"Other"},{"subitem_subject":"LHD","subitem_subject_scheme":"Other"}]},"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":"Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics"}]},"item_type_id":"10001","owner":"20","path":["7"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-06-17"},"publish_date":"2022-06-17","publish_status":"0","recid":"11311","relation_version_is_last":true,"title":["Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics"],"weko_creator_id":"20","weko_shared_id":-1},"updated":"2023-09-26T05:48:31.424691+00:00"}