RF cavities and power amplifier for the compact proton synchrotron

Author

Fang, Z. ; Endo, K. ; Egawa, K. ; Hirashima, T. ; Averboukh, I.I.

Author_Institution

KEK, Tsukuba, Japan

Volume

2

fYear

2003

fDate

12-16 May 2003

Firstpage

1074

Abstract

A project to build a compact proton synchrotron is now underway. Protons will be accelerated from 2 MeV to 200 MeV within 5 ms with an operation repetition rate of 10 Hz, in the synchrotron ring with a circumference of 11.9 m. The acceleration system is required to be of a wide bandwidth, with the frequency sweeping from 1.64 MHz to 14.26 MHz, and of a high gradient, with the maximum acceleration voltage of 20 kV. The acceleration section, consisting of a 2-cell rf cavity loaded with 4 high-permeability magnetic alloy cores in each cell, has been designed. A push-pull power amplifier with two 35 kW tetrode tubes will be used to drive the 2 cavities in parallel. Calculations and test results on the cavity characteristics will be presented and discussed, including the cavity impedance and equivalent circuit. The simulation results of the amplifier system using the ICAP code will also be given. The prototype of the rf system is being developed, and a high power test will be performed soon.

Keywords

UHF power amplifiers; accelerator RF systems; accelerator cavities; synchrotrons; 1.64 to 14.26 MHz; 10 Hz; 2 to 200 MeV; 20 kV; 35 kW; 5 ms; acceleration system; compact proton synchrotron; magnetic alloy cores; maximum acceleration voltage; power amplifier; rf cavities; rf system; synchrotron ring; tetrode tubes; Acceleration; Bandwidth; Circuit testing; Magnetic cores; Power amplifiers; Protons; Radio frequency; Radiofrequency amplifiers; Synchrotrons; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289609

Filename

1289609