{"created":"2023-06-20T15:17:37.461857+00:00","id":11550,"links":{},"metadata":{"_buckets":{"deposit":"74794737-f125-4660-9d0d-8935e4bb5f09"},"_deposit":{"created_by":20,"id":"11550","owners":[20],"pid":{"revision_id":0,"type":"depid","value":"11550"},"status":"published"},"_oai":{"id":"oai:nifs-repository.repo.nii.ac.jp:00011550","sets":["6:7"]},"author_link":["127898","127899","127839","66532","66536","66893","127313"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-09-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"12","bibliographicPageStart":"126007","bibliographicVolumeNumber":"59","bibliographic_titles":[{"bibliographic_title":"Nuclear Fusion "}]}]},"item_10001_description_4":{"attribute_name":"著者ID","attribute_value_mlt":[{"subitem_description":"0000-0003-2337-3232","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Error fields are predominantly attributed to inevitable coil imperfections. Controlling error fields during coil fabrication and assembly is crucial for stellarators. Excessively tight coil tolerance increases time and cost, and, in part, led to the cancellation of the National Compact Stellarator Experiment and delay of W7-X. In this paper, we improve the recently proposed Hessian matrix method to rapidly identify important coil deviations. Two of the most common figures of merit, magnetic island size and quasi-symmetry, are analytically differentiated over coil parameters. By extracting the eigenvectors of the Hessian matrix, we can directly identify sensitive coil deviations in the order of the eigenvalues. The new method is applied to the upcoming Chinese First Quasi-axisymmetric Stellarator configuration. Important perturbations that enlarge n/m  =  4/11 islands and deteriorate quasi-axisymmetry of the magnetic field are successfully determined. The results suggest each modular coil should have separate tolerance and some certain perturbation combinations will produce significant error fields. By relaxing unnecessary coil tolerance, this method will hopefully lead to a substantial reduction in time and cost.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP Publishing "},{"subitem_publisher":"International Atomic Energy Agency "}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1088/1741-4326/ab3a7c","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Caoxiang Zhu et al 2019 Nucl. Fusion 59 126007"}]}]},"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/10.1088/1741-4326/ab3a7c","subitem_relation_type_select":"DOI"}}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. "},{"subitem_rights":"IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. "},{"subitem_rights":"The Version of Record is available online at https://doi.org/10.1088/1741-4326/ab3a7c. "}]},"item_10001_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00759871 ","subitem_source_identifier_type":"NCID"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0029-5515 ","subitem_source_identifier_type":"ISSN"}]},"item_10001_text_23":{"attribute_name":"NAIS","attribute_value_mlt":[{"subitem_text_value":"13567"}]},"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":"ZHU, Caoxiang"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"GATES, David A."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HUDSON, Stuart R."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"LIU, Haifeng"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"XU,  Yuhong"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"SHIMIZU,  Akihiro"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":""}],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"OKAMURA,  Shoichi"}],"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":"2022-09-06"}],"displaytype":"detail","filename":"13567_Nucl.Fusion.pdf","filesize":[{"value":"6.7 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"13567_Nucl.Fusion","url":"https://nifs-repository.repo.nii.ac.jp/record/11550/files/13567_Nucl.Fusion.pdf"},"version_id":"0d0dae93-53c6-4594-bed0-cdf5a2d2be88"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"stellarator coils","subitem_subject_scheme":"Other"},{"subitem_subject":"error field","subitem_subject_scheme":"Other"},{"subitem_subject":"Hessian matrix","subitem_subject_scheme":"Other"},{"subitem_subject":"sensitivity analysis","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":"Identification of important error fields in stellarators using the Hessian matrix method","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Identification of important error fields in stellarators using the Hessian matrix method"}]},"item_type_id":"10001","owner":"20","path":["7"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-09-06"},"publish_date":"2022-09-06","publish_status":"0","recid":"11550","relation_version_is_last":true,"title":["Identification of important error fields in stellarators using the Hessian matrix method"],"weko_creator_id":"20","weko_shared_id":-1},"updated":"2024-02-19T01:50:49.026800+00:00"}