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Report No.
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Status of the horizontal paint bump power supply of the J-PARC RCS

Ueno, Tomoaki; Takayanagi, Tomohiro   ; Horino, Koki; Hayashi, Naoki  ; Kinsho, Michikazu  

In 3-GeV RCS (Rapid-Cycling Synchrotron) of J-PARC (Japan Proton Accelerator Research Complex), the beam commissioning test with 400 MeV beam injection energy from LINAC (Linear Accelerator) was started in January, 2014 and the J-PARC user operation was started in February of the year. The performance of the paint bump power supply was upgraded, which is 1.6 times the output current and 2 times the output voltage. The new power supply operation was started without a trouble on schedule. However, after the test operation of the new shift bump (SB) power supply, the trouble of the circuit part was frequent. Therefore the excitation wave pattern of the horizontal paint bump power supply, which was combined the function of the horizontal shift bump power supply pattern and the painting injection pattern, was demanded. In this paper, the contents of the upgraded power supply of the horizontal paint bump and the method of the any output wave pattern formation is reported.

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