{"created":"2023-05-15T15:00:01.006109+00:00","id":81445,"links":{},"metadata":{"_buckets":{"deposit":"d5b1fdf6-dbad-48b8-a6eb-70d61863f90d"},"_deposit":{"created_by":1,"id":"81445","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"81445"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00081445","sets":["1"]},"author_link":["913000","912999","912995","912993","912998","912997","912996","912994"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"017006","bibliographicPageStart":"017001","bibliographicVolumeNumber":"60","bibliographic_titles":[{"bibliographic_title":"Japanese Journal of Applied Physics"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A transparent-grid scheme is proposed for generating cathode-emittance-dominated beams in a gridded thermionic gun. In the proposed scheme, the grid emittance arising from the potential difference between the grid and grid-mesh center is suppressed by tuning the grid voltage to the gridless gun potential. We developed a 50 kV gridded thermionic gun that is followed by a 238 MHz cavity for 500 kV acceleration. The measured projected emittance as a function of grid voltage shows a clear minimum approaching the cathode emittance and agrees well with a numerical simulation and a theoretical grid emittance taking into account the longitudinal space-charge effect. The measured minimum emittance for a core part which represents 60% of a 1-nC electron bunch is 1.5 μm centerdot rad making the transparent-gridded thermionic gun a promising electron source for high brightness beam application such as a soft X-ray free-electron laser.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"応用物理学会物理系学術誌刊行センター"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.35848/1347-4065/abd0c9","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://doi.org/10.35848/1347-4065/abd0c9","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0021-4922","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":"安積, 隆夫"}],"nameIdentifiers":[{"nameIdentifier":"912993","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"西森, 信行"}],"nameIdentifiers":[{"nameIdentifier":"912994","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"稲垣, 隆宏"}],"nameIdentifiers":[{"nameIdentifier":"912995","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大竹, 雄次"}],"nameIdentifiers":[{"nameIdentifier":"912996","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田中, 均"}],"nameIdentifiers":[{"nameIdentifier":"912997","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Asaka, Takao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912998","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishimori, Nobuyuki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"912999","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tanaka, Hitoshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"913000","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":"Transparent-grid scheme for generating cathode-emittance-dominated beams in a gridded thermionic gun","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Transparent-grid scheme for generating cathode-emittance-dominated beams in a gridded thermionic gun"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-12-25"},"publish_date":"2020-12-25","publish_status":"0","recid":"81445","relation_version_is_last":true,"title":["Transparent-grid scheme for generating cathode-emittance-dominated beams in a gridded thermionic gun"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:01:07.130825+00:00"}