Title :
Effect of source voltage subharmonics on a rapid cycling synchrotron power supply
Author :
Zhang, F.Q. ; Adachi, T. ; Endo, K.
Author_Institution :
Graduate Univ. for Adv. Studies, Tsukuba, Japan
Abstract :
In a 50 Hz rapid cycling power supply, the resonant AC current of the synchrotron magnet is modulated by the subharmonics of the source voltage rectified in 12 pulses with SCR. The modulation is found to be caused by the fluctuation of the pulsed power that is transferred to the magnet circuit via a choke transformer due to the cycle-to-cycle unequal charging of the capacitor located just after the rectifier. This phenomena is observed when there is a mismatch between frequencies of the power line and resonant magnet circuit. In this paper, the modulation behavior is analyzed and the experimental results are given as well as those of the circuit computations
Keywords :
accelerator magnets; power supplies to apparatus; power supply circuits; power system harmonics; synchrotrons; 50 Hz; capacitor; choke transformer; cycle-to-cycle charging; power line; power supply; rapid cycling synchrotron; resonant AC current; resonant magnet circuit; source voltage subharmonics; Fluctuations; Magnetic circuits; Magnetic modulators; Magnetic resonance; Pulse modulation; Pulse transformers; Pulsed power supplies; Synchrotrons; Thyristors; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753245
