Paper |
Title |
Other Keywords |
Page |
MOPB096 |
Beam Loss Mitigation in J-PARC Linac after the Tohoku Earthquake |
linac, multipactoring, radiation, beam-transport |
401 |
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- M. Ikegami, Z. Fang, K. Futatsukawa, T. Miyao
KEK, Ibaraki, Japan
- Y. Liu
KEK/JAEA, Ibaraki-Ken, Japan
- T. Maruta, A. Miura, J. Tamura, G.H. Wei
JAEA/J-PARC, Tokai-mura, Japan
- H. Sako
JAEA, Ibaraki-ken, Japan
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The beam operation of J-PARC linac was interrupted by the Tohoku earthquake in March 2011. After significant effort for its restoration, we have resumed the beam operation of J-PARC linac in December 2011. After resumption of beam operation, we have been suffering from beam losses which were not observed before the earthquake. Tackling with the beam loss issues, we have been reached the comparable beam power for user operation to the one before the earthquake. In this paper, we present the experience in the beam start-up tuning after the earthquake with emphasis on the beam loss mitigation efforts.
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THPB091 |
Machine Protection Issues and Solutions for Linear Accelerator Complexes |
instrumentation, controls, radiation, linac |
1032 |
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- M. Jonker, H. Schmickler, R. Schmidt, D. Schulte
CERN, Geneva, Switzerland
- M.C. Ross
SLAC, Menlo Park, California, USA
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The workshop “Machine Protection focusing on Linear Accelerator Complexes” was held from 6-8 June 2012 at Cern. This workshop brought together experts working on machine protection systems for accelerator facilities with high brilliance or large stored beam energies, with the main focus on linear accelerators and their injectors. An overview of the machine protection systems for several accelerators was given. Beam loss mechanisms and their detection were discussed. Mitigation of failures and protection systems were presented. This paper summarises the workshop and reviews the current state of the art in machine protection systems.
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