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Zhang, F.; Watanabe, Yasuhiro; Koseki, Shoichiro*; Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*
JAERI-Tech 2002-039, 21 Pages, 2002/03
The 3 GeV Proton RCS of the JAERI-KEK Joint Project is a 25 Hz separate-function rapid cycling synchrotron under design. Bending magnets (BM) and quadrupole magnets (QM) are excited separately. The 3 GeV RCS requests above 10 families of magnets excited independently, far beyond 3 families in practical RCS's. Difficulty of field tracking between BM and QM is significantly increased Magnet strings are grouped into resonant networks and excited resonantly by power supplies driven by a waveform pattern, typically a DC-biased sinusoidal signal. To achieve a close tracking between many families, the driving signal of each power supply should be adjusted in phase and amplitude flexibly and dynamically.This report proposes a signal generator based on VXIbus. The VXIbus, an extension of VMEbus (VME eXtension for Instrument), provides an open architecture with shared process bus and timing. The VXIbus-based signal generator facilitates the timing synchronization and extension to many channels needed by the 3 GeV RCS. Experimental results of the signal generator are reported.
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.
Koseki, Shoichiro*; Zhang, F.; Watanabe, Yasuhiro; Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*
Heisei-13-Nen Denki Gakkai Sangyo Oyo Bumon Zenkoku Taikai Koen Rombunshu, 1, p.253 - 256, 2001/08
no abstracts in English
Watanabe, Yasuhiro; Zhang, F.; Koseki, Shoichiro*; Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*
Heisei-13-Nen Denki Gakkai Sangyo Oyo Bumon Zenkoku Taikai Koen Rombunshu, 2, p.761 - 762, 2001/08
no abstracts in English