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Report No.
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Construction of low-jitter circuit for new kicker power supply using next-generation power semiconductor

Oda, Kodai; Takayanagi, Tomohiro   ; Ono, Ayato; Horino, Koki*; Ueno, Tomoaki*; Sugita, Moe ; Morishita, Takatoshi  ; Iinuma, Hiromi*; Tokuchi, Akira*; Kamezaki, Hiroaki*; Ikoma, Naoya*; Nakata, Kyosuke*

Kicker system is being used to kick the accelerated 3 GeV beam into the transport lines in RCS of J-PARC. The current kicker power supply applies thyratrons to discharge switches. We are developing a new kicker power supply using next-generation power semiconductors. The timing of the semiconductor switch operation is determined by the input of an external trigger signal. Large timing jitter causes unstable output pulses and beam loss due to beam orbit deviate from reference orbit. Therefore, a low jitter circuit that achieves high repeatability of 2 ns or less will be developed for the new kicker power supply. A prototype trigger generator has been fabricated, and jitter has been evaluated. The results of the evaluation test and the circuit configuration plan for reducing jitter will be reported.

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