Title :
Solid-state klystron modulator for JLC
Author :
Akemoto, M. ; Chin, Y.H. ; Sakamoto, Y.
Author_Institution :
KEK, Tsukuba, Japan
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;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988235
