Advertisement

Journal of the Korean Physical Society

, Volume 63, Issue 7, pp 1274–1279 | Cite as

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

  • Tomofumi MarutaEmail author
  • Akihiko Miura
  • Hiroyuki Sako
  • Jun Tamura
  • Masanori Ikegami
  • Kenta Futatsukawa
  • Zhigao Fang
  • Tomoaki Miyao
  • Yong Liu
Article
  • 48 Downloads

Abstract

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.

Keywords

J-PARC Linac Beam commissioning 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Y. Yamazaki ed., Technical Design Report of J-PARC, KEK Report 2002-13 (2003).Google Scholar
  2. [2]
    K. Hasegawa, M. Kinsho, H. Oguri and T. Koseki, Proceedings of 2nd International Particle Accelerator Conference (IPAC’11) (San Sebastián, September 2011), WEPS095, p. 2727.Google Scholar
  3. [3]
    K. Hasegawa, Proceedings of 26th International Linear Accelerator Conference (LINAC’12) (Tel-Aviv, September 2012), FR2A01, in printing.Google Scholar
  4. [4]
    M. Ikegami, Z. Fang, K. Futatsukawa, T. Miyao, T. Maruta, H. Sako, A. Miura, G. Wei and J. Tamura, Proceedings of 3rd International Particle Accelerator Conference (IPAC’12) (New Orleans, May 2012), THPPC010, p. 3293.Google Scholar
  5. [5]
    G. Wei, A. Miura, K. Hirano, T. Maruta and M. Ikegami, Proceedings of 2nd International Particle Accelerator Conference (IPAC’11) (San Sebastián, September 2011), WEPS048, p. 2598.Google Scholar
  6. [6]
    M. Ikegami, Prog. Theor. Exp. Phys., 02B002 (2012).Google Scholar
  7. [7]
    J. Tamura, H. Ao, H. Asano, T. Morishita, N. Ouchi and Y. Sawabe, Proceedings of 26th International Linear Accelerator Conference (LINAC’12) (Tel-Aviv, September 2012), in printing.Google Scholar
  8. [8]
    T. Ito and K. Hirano, private communication.Google Scholar
  9. [9]
    T. Ito, K. Hirano and K. Nammo, Proceedings of the 9th Annual Meeting of Particle Accelerator Society of Japan (in Japanese).Google Scholar
  10. [10]
    K. Futatsukawa, S. Anami, M. Kawamura, T. Kobayashi, Z. Fang, Y. Fukui, S. Michizono, F. Sato, S. Shinozaki, E. Chishiro, N. Tsubota, T. Hori and M. Yamazaki, Proceedings of the 9th Annual Meeting of Particle Accelerator Society of Japan (in Japanese).Google Scholar
  11. [11]
    M. Ikegami, Z. Fang, K. Futatsukawa, T. Miyao, Y. Liu, T. Maruta, A. Miura, J. Tamura, G. H. Wei and H. Sako, Proceedings of 26th International Linear Accelerator Conference (LINAC’12) (Tel-Aviv, September 2012), in printing.Google Scholar
  12. [12]
    H. Sako and M. Ikegami, IEEE Trans. Nucl. Sci. 57, 2783 (2010).ADSCrossRefGoogle Scholar

Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • Tomofumi Maruta
    • 1
    Email author
  • 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. 1.J-PARC centerJapan Atomic Energy AgencyTokai-muraJapan
  2. 2.J-PARC centerHigh Energy Accelerator Research OrganizationTokai-muraJapan

Personalised recommendations