{"created":"2023-06-20T13:20:36.912731+00:00","id":651,"links":{},"metadata":{"_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":["2:428:14"]},"author_link":["0","0","0"],"item_1_creator_2":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"DIXIT, TANUJA SUSHANT"}],"nameIdentifiers":[{}]}]},"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":[{}]}]},"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_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<br /> induction synchrotron concept, is discussed here. Its operational performance is the<br /> same as that of the induction synchrotron, where acceleration and confinement of ions<br /> in the propagation direction are implemented independently with a pulsed voltage and<br /> the so-called barrier voltages. These voltage pulses are generated in the induction<br /> acceleration cell energized by the switching power supply, which is triggered with a<br /> trigger signal manipulated by an ion-bunch signal. In the digital accelerator, any ion<br /> species with its possible charge state can be accelerated since the acceleration voltage<br /> pulse generation is always synchronized with the ion circulation. Acceleration of <br />argon ions is planned as a proof-of-principle experiment at KEK. The detailed aspects<br /> of the digital accelerator are described, including theoretical backgrounds such as<br /> beam dynamics. <br /><br />  The KEK-PS booster synchrotron is under renovation, aiming to become the  first <br /> digital accelerator. The KEK Booster is a rapid-cycle synchrotron where the acceleration<br /> voltage amplitude changes dynamically throughout the acceleration <br />period. The existing induction cells can provide a peak output voltage of 2 kV in 250 <br />nsec pulse width at a maximum repetition rate of 1 MHz. Once the peak output<br /> voltage is fixed, it is difficult to change its magnitude in the same acceleration cycle. <br /> The main purpose of this thesis is to propose the realization of a dynamically<br /> changeable acceleration voltage by employing the induction acceleration system. In<br /> fact, this idea has been developed for the KEK digital accelerator. The acceleration<br /> period is divided into stages, where different acceleration voltages, pulse widths, and<br /> repetition rates are required. A novel technique, which consists of staging of the<br /> acceleration period, systematic sorting of the induction acceleration cells, and<br /> intermittent operation of the induction acceleration systems, has been developed. <br /> Particle tracking simulations in the longitudinal direction were performed in order to<br /> verify the feasibility of the scheme. The acceleration scheme has been verified<br /> experimentally for the first two stages of the acceleration period by using a beam<br /> simulator signal. The results will be presented here and the perspectives of this<br /> 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_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":[{}]}]},"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","filename":"甲1194_要旨.pdf","filesize":[{"value":"268.2 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","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","filename":"甲1194_本文.pdf","filesize":[{"value":"6.5 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","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"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-22"},"publish_date":"2010-02-22","publish_status":"0","recid":"651","relation_version_is_last":true,"title":["Acceleration scenario and Necessary Devices for The KEK-Digital Accelerator"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T16:00:53.019956+00:00"}