{"_buckets": {"deposit": "df968dba-e27d-4abc-8be9-71b8ba519344"}, "_deposit": {"created_by": 1, "id": "651", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "651"}, "status": "published"}, "_oai": {"id": "oai:ir.soken.ac.jp:00000651", "sets": ["14"]}, "author_link": ["0", "0", "0"], "item_1_biblio_info_21": {"attribute_name": "書誌情報（ソート用）", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2008-09-30", "bibliographicIssueDateType": "Issued"}, "bibliographic_titles": [{}]}]}, "item_1_creator_2": {"attribute_name": "著者名", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "DIXIT, TANUJA SUSHANT"}], "nameIdentifiers": [{"nameIdentifier": "0", "nameIdentifierScheme": "WEKO"}]}]}, "item_1_creator_3": {"attribute_name": "フリガナ", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "デクシット, タヌジャ スーシャント"}], "nameIdentifiers": [{"nameIdentifier": "0", "nameIdentifierScheme": "WEKO"}]}]}, "item_1_date_granted_11": {"attribute_name": "学位授与年月日", "attribute_value_mlt": [{"subitem_dategranted": "2008-09-30"}]}, "item_1_degree_grantor_5": {"attribute_name": "学位授与機関", "attribute_value_mlt": [{"subitem_degreegrantor": [{"subitem_degreegrantor_name": "総合研究大学院大学"}]}]}, "item_1_degree_name_6": {"attribute_name": "学位名", "attribute_value_mlt": [{"subitem_degreename": "博士（工学）"}]}, "item_1_description_1": {"attribute_name": "ID", "attribute_value_mlt": [{"subitem_description": "2008513", "subitem_description_type": "Other"}]}, "item_1_description_12": {"attribute_name": "要旨", "attribute_value_mlt": [{"subitem_description": "A novel ion accelerator referred to as a digital accelerator, which is based on the\u003cbr /\u003e induction synchrotron concept, is discussed here. Its operational performance is the\u003cbr /\u003e same as that of the induction synchrotron, where acceleration and confinement of ions\u003cbr /\u003e in the propagation direction are implemented independently with a pulsed voltage and\u003cbr /\u003e the so-called barrier voltages. These voltage pulses are generated in the induction\u003cbr /\u003e acceleration cell energized by the switching power supply, which is triggered with a\u003cbr /\u003e trigger signal manipulated by an ion-bunch signal. In the digital accelerator, any ion\u003cbr /\u003e species with its possible charge state can be accelerated since the acceleration voltage\u003cbr /\u003e pulse generation is always synchronized with the ion circulation. Acceleration of \u003cbr /\u003eargon ions is planned as a proof-of-principle experiment at KEK. The detailed aspects\u003cbr /\u003e of the digital accelerator are described, including theoretical backgrounds such as\u003cbr /\u003e beam dynamics. \u003cbr /\u003e\u003cbr /\u003e  The KEK-PS booster synchrotron is under renovation, aiming to become the  first \u003cbr /\u003e digital accelerator. The KEK Booster is a rapid-cycle synchrotron where the acceleration\u003cbr /\u003e voltage amplitude changes dynamically throughout the acceleration \u003cbr /\u003eperiod. The existing induction cells can provide a peak output voltage of 2 kV in 250 \u003cbr /\u003ensec pulse width at a maximum repetition rate of 1 MHz. Once the peak output\u003cbr /\u003e voltage is fixed, it is difficult to change its magnitude in the same acceleration cycle. \u003cbr /\u003e The main purpose of this thesis is to propose the realization of a dynamically\u003cbr /\u003e changeable acceleration voltage by employing the induction acceleration system. In\u003cbr /\u003e fact, this idea has been developed for the KEK digital accelerator. The acceleration\u003cbr /\u003e period is divided into stages, where different acceleration voltages, pulse widths, and\u003cbr /\u003e repetition rates are required. A novel technique, which consists of staging of the\u003cbr /\u003e acceleration period, systematic sorting of the induction acceleration cells, and\u003cbr /\u003e intermittent operation of the induction acceleration systems, has been developed. \u003cbr /\u003e Particle tracking simulations in the longitudinal direction were performed in order to\u003cbr /\u003e verify the feasibility of the scheme. The acceleration scheme has been verified\u003cbr /\u003e experimentally for the first two stages of the acceleration period by using a beam\u003cbr /\u003e simulator signal. The results will be presented here and the perspectives of this\u003cbr /\u003e technique will be discussed.", "subitem_description_type": "Other"}]}, "item_1_description_7": {"attribute_name": "学位記番号", "attribute_value_mlt": [{"subitem_description": "総研大甲第1194号", "subitem_description_type": "Other"}]}, "item_1_select_14": {"attribute_name": "所蔵", "attribute_value_mlt": [{"subitem_select_item": "有"}]}, "item_1_select_16": {"attribute_name": "複写", "attribute_value_mlt": [{"subitem_select_item": "application/pdf"}]}, "item_1_select_8": {"attribute_name": "研究科", "attribute_value_mlt": [{"subitem_select_item": "高エネルギー加速器科学研究科"}]}, "item_1_select_9": {"attribute_name": "専攻", "attribute_value_mlt": [{"subitem_select_item": "12 加速器科学専攻"}]}, "item_1_text_10": {"attribute_name": "学位授与年度", "attribute_value_mlt": [{"subitem_text_value": "2008"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "DIXIT, Tanuja Sushant ", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "0", "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": "2016-02-17"}], "displaytype": "simple", "download_preview_message": "", "file_order": 0, "filename": "甲1194_要旨.pdf", "filesize": [{"value": "268.2 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_11", "mimetype": "application/pdf", "size": 268200.0, "url": {"label": "要旨・審査要旨", "url": "https://ir.soken.ac.jp/record/651/files/甲1194_要旨.pdf"}, "version_id": "5ed5dd41-8640-4e62-a2cf-837477040abb"}, {"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2016-02-17"}], "displaytype": "simple", "download_preview_message": "", "file_order": 1, "filename": "甲1194_本文.pdf", "filesize": [{"value": "6.5 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_11", "mimetype": "application/pdf", "size": 6500000.0, "url": {"label": "本文", "url": "https://ir.soken.ac.jp/record/651/files/甲1194_本文.pdf"}, "version_id": "68d7c521-aacf-458b-93d7-f740895d0cbd"}]}, "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": "thesis", "resourceuri": "http://purl.org/coar/resource_type/c_46ec"}]}, "item_title": "Acceleration scenario and Necessary Devices for The KEK-Digital Accelerator", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Acceleration scenario and Necessary Devices for The KEK-Digital Accelerator"}, {"subitem_title": "Acceleration scenario and Necessary Devices for The KEK-Digital Accelerator", "subitem_title_language": "en"}]}, "item_type_id": "1", "owner": "1", "path": ["14"], "permalink_uri": "https://ir.soken.ac.jp/records/651", "pubdate": {"attribute_name": "公開日", "attribute_value": "2010-02-22"}, "publish_date": "2010-02-22", "publish_status": "0", "recid": "651", "relation": {}, "relation_version_is_last": true, "title": ["Acceleration scenario and Necessary Devices for The KEK-Digital Accelerator"], "weko_shared_id": 1}