加速器
Online ISSN : 2436-1488
Print ISSN : 1349-3833
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PF-AR 直接入射路の建設と運転
東 直 浅岡 聖二飯田 直子岩瀬 広上田 明内山 隆司小川 雄二郎尾崎 俊幸小野 正明帯名 崇柿原 和久紙谷 琢哉菊池 光男岸本 祐二工藤 喜久雄久米 達哉小玉 恒太小林 幸則坂中 章悟下ヶ橋 秀典佐藤 政則佐藤 政行佐波 俊哉諏訪田 剛高井 良太高木 宏之鷹崎 誠治高橋 毅多田野 幹人田中 窓香谷本 育律田原 俊央多和田 正文峠 暢一長橋 進也中村 典雄中村 一夏井 拓也濁川 和幸丹羽 尉博野上 隆史芳賀 開一原田 健太郎肥後 寿泰古川 和朗本田 融本間 博幸三川 勝彦三増 俊広宮内 洋司宮原 房史山田 悠介山本 尚人山本 将博吉田 光宏
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2017 年 14 巻 3 号 p. 134-141

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PF-AR is a synchrotron light source located in High Energy Accelerator Research Organization (KEK) and supplies hard X-ray with single bunch operation. The injector “LINAC” of PF-AR is shared with other three rings: High Energy Ring (HER) and Low Energy Ring (LER) of SuperKEKB and PF. In KEKB era, the beam transport line (BT) of PF-AR and HER was shared, and the injection had to be interrupted for ten minutes at least for the standardization of the magnets when changing the objective ring for the injection. In the winter of FY2017, phase 2 operation of SuperKEKB will begin, and its Touschek lifetime is calculated as about ten minutes. This is shorter than in KEKB era, and the sharing of the BT cannot be adopted anymore for the simultaneous operation of both PF-AR and SuperKEKB. In order to realize this, we have constructed a new BT dedicated to PF-AR. The excavation of the new tunnel started in 2013, and the infrastructure construction was completed in 2014. The commissioning with the new direct BT started on 13 February, and the user-run was resumed in April 2017. The machine study for the top-up operation of PF-AR and the simultaneous top-up operation of all 4 rings are planed in autumn 2017 and in autumn 2018 respectively.

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© 2017 日本加速器学会
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