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Ultra High Vacuum for High Intensity Proton Accelerators |
vacuum, ion, radiation, proton |
971 |
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- N. Ogiwara
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
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In high intensity proton accelerators neutrons, as well as gamma rays, are generated. At the J-PARC synchrotron the cumulative energy dose will be of the order of several-mSv/h over 1 month user operation. In order to minimize the radiation exposure during maintenance, it is necessary to construct a vacuum system with reliable components which have a long life in such a high level of radiation. In addition, in all machines it is necessary to keep the operating pressure of the beam in ultra high vacuum (UHV) to suppress pressure instability. At J-PARC RCS the UHV conditions were realized without baking and the beam operation has been successful to date. General considerations for vacuum systems for high intensity linear and circular accelerators will be provided in the talk.
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Slides TUZB02 [3.380 MB]
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