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Jiang, W.

Paper Title Page
MOPAN042 Switching Power Supply for Induction Accelerators 251
  • M. Wake, Y. Arakida, K. Koseki, Y. Shimosaki, K. Takayama, K. T. Torikai
    KEK, Ibaraki
  • W. Jiang, K. Nakahiro
    Nagaoka University of Technology, Nagaoka, Niigata
  • A. Sugiyama
    Shindengen Co., Ltd., Tokyo
  • A. Tokuchi
    Nichicon (Kusatsu) Corporation, Shiga
  A new particle acceleration method using pulsed induction cavities was introduced in the super-bunch project at KEK. Unlike conventional RF acceleration, this acceleration method separates functions of acceleration and confinement As a result, this acceleration method can be applied for accelerating a wide mass range of particles. However, it is necessary to give a very fast pulsed-excitation to the cavity to perform the induction acceleration. Switching power supplies of high voltage output with very fast pulse-operation is one of the most important key technologies for this new acceleration method. We have developed 20ns rise time pulse at continuous repetition rate of 1MHz using MOS-FET's. Induction cavities were modulated through the 200m long transmission lines. Further development using SI- thyristor achieved 1MHz and 2kV switching in a burst mode operation. SiC devices are also studied for the application and some promising results were obtained. Faster operation will make this new acceleration technology available for small accelerator projects.