Solid-state klystron modulator for JLC

Author

Akemoto, M. ; Chin, Y.H. ; Sakamoto, Y.

Author_Institution

KEK, Tsukuba, Japan

Volume

5

fYear

2001

fDate

2001

Firstpage

3732

Abstract

The klystron modulator for the Japan Linear Collider (JLC) is required to produce a 500 kV, 530 A, 1.5 μs flat-top pulse, and to drive a pair of 75 MW PPM-klystrons. To improve the reliability and energy efficiency, we are developing a solid-state modulator with a 1:5 primary split pulse transformer. This modulator consists of two parallel modulator units, each driving the primary winding of the transformer. Each modulator unit uses multiple pulse modulators stacked in series, and generates 50 kV, 2650 A pulses. This allows fast over-current protection and easy-to-control flat-top tuning of the output waveform. In our present study, a ten-stage test modulator has been built and has been successfully operated at 20 kV and switched up to 2860 A

Keywords

electron accelerators; klystrons; linear colliders; modulators; pulsed power supplies; 20 kV; 2650 A; 50 kV; 500 kV; 530 A; 75 MW; JLC; Japan Linear Collider; energy efficiency; over-current protection; pulse transformer; reliability; solid-state klystron modulator; Energy efficiency; Klystrons; Pulse circuits; Pulse generation; Pulse modulation; Pulse transformers; Solid state circuits; Space vector pulse width modulation; Switches; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.988235

Filename

988235