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| THP087 |
Status of C-band Accelerating Section Development at the KEKB Injector Linac
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788 |
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- T. Kamitani, T. Higo, M. Ikeda, K. Kakihara, N. K. Kudo, S. Ohsawa, T. Sugimura, T. T. Takatomi, K. Yokoyama
KEK, Ibaraki
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This paper reports on C-band accelerating section development for future energy upgrade of the KEKB injector linac. Target field gradient is 42 MV/m, that is twice of the present S-band sections in the linac. Until now, we have developed four 1m-long sections based on a half-scale design of the S-band section with improvements in coupler cavity shape and in fabrication method. And the fifth accelerating section is in fabrication now. The four sections have already installed in the beam line of the linac. Together with a unit of C-band rf source (50 MW klystron, pulse modulator, rf-pulse compressor) installed in the linac, we will perform an operation test of a model C-band accelerator module that has almost same configuration as a design module in the upgrade. Results of the long-term operation test and beam acceleration study will be described. And present status of development of the fifth accelerating section will also be given.
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