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Journal Articles

Development of next-generation LLRF control system for J-PARC rapid cycling synchrotron

Tamura, Fumihiko; Sugiyama, Yasuyuki*; Yoshii, Masahito*; Ryoshi, Masatsugu*

IEEE Transactions on Nuclear Science, 66(7), p.1242 - 1248, 2019/07

 Times Cited Count:4 Percentile:56.35(Engineering, Electrical & Electronic)

The LLRF control system for the rapid cycling synchrotron of the J-PARC started its operation in 2007. The key functions of the LLRF control system are the dual harmonic auto voltage control and the multiharmonic rf feedforward to compensate the beam loading in the MA cavity caused by high intensity beams. The system has been working well without major problems for more than ten years. However, the old FPGAs are discontinued and not supported by the current development environment. It will be difficult to maintain the system in near future. Thus, we are planning to replace the existing VME-based LLRF control system with a new MicroTCA.4 based system. In this presentation, we present the configuration of the system under development, the implemented functions, and preliminary test results.

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