{"created":"2023-05-15T14:58:41.716709+00:00","id":79630,"links":{},"metadata":{"_buckets":{"deposit":"463ae08c-9e6e-4fb3-91d9-e864cc49bcfa"},"_deposit":{"created_by":1,"id":"79630","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"79630"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00079630","sets":["10:28"]},"author_link":["859556","859559","859558","859553","859554","859555","859557","859552"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-09-24","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"This paper reports the gamma-ray irradiation effects on optical coatings and polarizers to be used in the ITER edge Thomson scattering system (ETS). Outside a diagnostic port-plug, in the Interspace, a total dose of the order of 1 MGy is expected through 20 years of ITER operation. In this study, gamma-ray irradiation experiments were performed up to 10 MGy. A high peak power laser beam, i.e. a pulse energy of 5 J and a pulse duration of ~4 ns, is needed for a Thomson scattering measurement in ITER. Laser-induced damage threshold (LIDT) of anti-reflection (AR) and high-reflection (HR) coatings at the laser wavelengths after gamma-ray irradiation were investigated. Contrary to expectation, LIDT of AR coating is more likely higher for the irradiated samples at a wavelength of 1064 nm. Regarding HR coatings, LIDT was not noticeably degraded by gamma-ray irradiation. Regarding polarizers, no degradation of transmission and extinction ratio was observed at visible and near infrared wavelength ranges when a wire-grid polarizer substrate is made of fused silica. Since a signal of ETS is almost linearly polarized, a wire-grid polarizer enables to improve signal to noise ratio of electron temperature and density measurements by Thomson scattering in ITER. ","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"The 14th International Symposium on Fusion Nuclear Technology","subitem_description_type":"Other"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"谷塚, 英一"}],"nameIdentifiers":[{"nameIdentifier":"859552","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鳥本, 和弘"}],"nameIdentifiers":[{"nameIdentifier":"859553","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"石川, 正男"}],"nameIdentifiers":[{"nameIdentifier":"859554","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"波多江, 仰紀"}],"nameIdentifiers":[{"nameIdentifier":"859555","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yatsuka, Eiichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"859556","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Torimoto, Kazuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"859557","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ishikawa, Masao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"859558","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hatae, Takaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"859559","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-03-26"}],"displaytype":"detail","filename":"a95c5f06903c8bcc1e3dd254524f5f2b.pdf","filesize":[{"value":"2.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"2019_09_Yatsuka_ISFNT14_Poster2.pdf","url":"https://repo.qst.go.jp/record/79630/files/a95c5f06903c8bcc1e3dd254524f5f2b.pdf"},"version_id":"397ed7b6-d11b-4fef-81a1-af9b9a1fac7c"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Gamma-ray irradiation effects on optical coatings and polarizers for edge Thomson scattering system in ITER","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Gamma-ray irradiation effects on optical coatings and polarizers for edge Thomson scattering system in ITER"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-03-24"},"publish_date":"2020-03-24","publish_status":"0","recid":"79630","relation_version_is_last":true,"title":["Gamma-ray irradiation effects on optical coatings and polarizers for edge Thomson scattering system in ITER"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T22:13:24.203280+00:00"}