Title :
Wideband push-pull amplifier for high gradient cavity
Author :
Sato, Y. ; Fujieda, M. ; Mori, Y. ; Nakayama, H. ; Ohmori, C. ; Muramatsu, R. ; Uesugi, T. ; Yamamoto, M. ; Toda, M. ; Takagi, A. ; Yoshi, M. ; Taniguch, Y.
Author_Institution :
KEK, Tsukuba, Japan
Abstract :
A high gradient cavity (HGC) using high permeability magnetic alloy (MA) cores has been developed at KEK for the JHF (Japan Hadron Facility) proton synchrotrons. In this paper, we describe two types of push-pull amplifiers to drive the cavity, which were constructed for verifying the cavity performance. An accelerating voltage of 20 kV across the gap of the HGC was generated by the high power push-pull amplifier. This is equivalent to high gradient field of 50 kV/m. The other amplifier and the cavity were prepared for accelerating heavy ions at the HIMAC (Heavy Ion Medical Accelerator in Chiba). For this purpose, it is necessary to sweep the frequency over the wide range from 1 MHz to 8 MHz
Keywords :
accelerator RF systems; accelerator cavities; differential amplifiers; ion accelerators; proton accelerators; radiofrequency amplifiers; synchrotrons; 20 kV; HIMAC; Heavy Ion Medical Accelerator in Chiba; high gradient cavity; high permeability magnetic alloy cores; proton synchrotrons; wideband push-pull amplifier; Acceleration; Broadband amplifiers; High power amplifiers; Ion accelerators; Magnetic cores; Permeability; Power generation; Protons; Synchrotrons; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795430
