{"created":"2023-06-20T15:17:16.774095+00:00","id":11113,"links":{},"metadata":{"_buckets":{"deposit":"147dd126-0cc1-42ec-ba6a-a69233777286"},"_deposit":{"created_by":19,"id":"11113","owners":[19],"pid":{"revision_id":0,"type":"depid","value":"11113"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00011113","sets":["6:7"]},"author_link":["126885","66517","66518","66529"],"control_number":"11113","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-09-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"10","bibliographicPageStart":"10I109","bibliographicVolumeNumber":"89","bibliographic_titles":[{"bibliographic_title":"Review of Scientific Instruments"}]}]},"item_10001_description_4":{"attribute_name":"著者ID","attribute_value_mlt":[{"subitem_description":"0000-0003-4221-1618","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A charge-coupled device (CCD) is widely used as a detector of vacuum spectrometers in fusion devices. Recently, a deuterium plasma experiment has been initiated in a Large Helical Device (LHD). Totally 3.7 × 1018 neutrons have been yielded with energies of 2.45 MeV (D-D) and 14.1 MeV (D-T) during the deuterium experiment over four months. Meanwhile, γ-rays are radiated from plasma facing components and laboratory structural materials in a wide energy range, i.e., 0.01-12.0 MeV, through the neutron capture. It is well known that these neutrons and γ-rays bring serious problems to the CCD system. Then, several CCDs of vacuum ultraviolet/extreme ultraviolet/X-ray spectrometers installed at different locations on LHD for measurements of spectra and spatial profiles of impurity emission lines are examined to study the effect of neutrons and γ-rays. An additional CCD placed in a special shielding box made of 10 cm thick polyethylene contained 10% boron and 1.5 cm thick lead is also used for the detailed analysis. As a result, it is found that the CCD has no damage in the present neutron yield of LHD, while the background noise integrated for all pixels of CCD largely increases, i.e., 1-3 × 108 counts/s. The data analysis of CCD in the shielding box shows that the background noise caused by the γ-ray is smaller than that caused by the neutron, i.e., 41% from γ-rays and 59% from neutrons. It is also found that the noise can be partly removed by an accumulation of CCD frames or software programming.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"AIP Publishing"}]},"item_10001_relation_13":{"attribute_name":"PubMed番号","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"30399678","subitem_relation_type_select":"PMID"}}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1063/1.5037233","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Review of Scientific Instruments 89, 10I109 (2018)"}]}]},"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/10.1063/1.5037233","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_18":{"attribute_name":"他の資源との関係","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Paper published as part of the Proceedings of the 22nd Topical Conference on High-Temperature Plasma Diagnostics, San Diego, California, April 2018."}]}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 89, 10I109 (2018) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.5037233."}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00817730","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0034-6748","subitem_source_identifier_type":"ISSN"}]},"item_10001_text_23":{"attribute_name":"NAIS","attribute_value_mlt":[{"subitem_text_value":"11421"}]},"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_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"LIU, Yang"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"MORITA,  Shigeru"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"OISHI,  Tetsutaro"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"GOTO,  Motoshi"}],"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":"2022-03-08"}],"displaytype":"detail","filename":"Rev.Scient.Instrum.89_pp10I109.pdf","filesize":[{"value":"2.6 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"Rev.Scient.Instrum.89_pp10I109","url":"https://nifs-repository.repo.nii.ac.jp/record/11113/files/Rev.Scient.Instrum.89_pp10I109.pdf"},"version_id":"e9dcbb73-5bb6-4233-9330-7d87b3f988d3"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Gamma rays","subitem_subject_scheme":"Other"},{"subitem_subject":"Neutrons","subitem_subject_scheme":"Other"},{"subitem_subject":"Charge coupled devices","subitem_subject_scheme":"Other"},{"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":"Effect of neutron and γ-ray on charge-coupled device for vacuum/extreme ultraviolet spectroscopy in deuterium discharges of large helical device","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Effect of neutron and γ-ray on charge-coupled device for vacuum/extreme ultraviolet spectroscopy in deuterium discharges of large helical device","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"19","path":["7"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-03-08"},"publish_date":"2022-03-08","publish_status":"0","recid":"11113","relation_version_is_last":true,"title":["Effect of neutron and γ-ray on charge-coupled device for vacuum/extreme ultraviolet spectroscopy in deuterium discharges of large helical device"],"weko_creator_id":"19","weko_shared_id":-1},"updated":"2023-09-26T05:53:42.838752+00:00"}