Current control of resonant type power supply for 3GeV proton synchrotron

Koseki, Shoichiro*; Watanabe, Yasuhiro; Zhang, F.; Tani, Norio

Heisei-14-Nen Denki Gakkai Zenkoku Taikai Koen Rombunshu, p.6 - 7, 2002/00

High Intensity Proton Accelerator Facility is under design. 3 GeV proton synchrotron is one of its facility. It has about ten families of magnets. Resonant type power supplies are adopted to excite their magnet families at 25 Hz. Magnetic field of each magnet family has to track each other at high precision of 1E-4. In this paper current control of power supply is studied. Phase angle of current is affected by variations of capacitance of resonant capacitors caused by temperature. A correction of current reference is necessary realize the performance.