Progress of beam commissioning and beam loss mitigation in the J-PARC linac after the Tohoku earthquake

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• 作者：Tomofumi Maruta (1)
  Akihiko Miura (1)
  Hiroyuki Sako (1)
  Jun Tamura (1)
  Masanori Ikegami (2)
  Kenta Futatsukawa (2)
  Zhigao Fang (2)
  Tomoaki Miyao (2)
  Yong Liu (2)
  
• 关键词：J ; PARC ; Linac ; Beam commissioning
• 刊名：Journal of the Korean Physical Society
• 出版年：2013
• 出版时间：October 2013
• 年：2013
• 卷：63
• 期：7
• 页码：1274-1279
• 全文大小：
• 作者单位：Tomofumi Maruta (1)
  Akihiko Miura (1)
  Hiroyuki Sako (1)
  Jun Tamura (1)
  Masanori Ikegami (2)
  Kenta Futatsukawa (2)
  Zhigao Fang (2)
  Tomoaki Miyao (2)
  Yong Liu (2)
  
  1. J-PARC center, Japan Atomic Energy Agency, Tokai-mura, 319-1195, Japan
  2. J-PARC center, High Energy Accelerator Research Organization, Tokai-mura, 319-1195, Japan
  
• ISSN：1976-8524

文摘

The Tohoku earthquake in March 2011 caused significant damage to the Japan Proton Accelerator Research Complex (J-PARC) linac and forced us to shutdown the accelerator for nearly nine months. After a significant effort for its restoration, we resumed beam operation of the J-PARC linac in December 2011. Since the resumption of beam operation, we have been suffering from beam-losses which were not observed before the earthquake. Tackling the beam-loss issues, we have finally reached the same beam power for user operation as before the earthquake. In this paper, we present our experience with the beam start-up tuning after the earthquake, with emphasis on beam-loss mitigation efforts.