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Home / Publications / Journals / Fusion Science and Technology / Volume 43 / Number 1T

Development of High Power RF Transmission Components for Long Pulse Operation

J.S. Yoon, Y.D. Bae, B.G. Hong, J. G. Kwak

Fusion Science and Technology / Volume 43 / Number 1T / January 2003 / Pages 101-104

Heating / dx.doi.org/10.13182/FST03-A11963574

Published:February 8, 2018

The high power RF transmission components are developed for transmitting MW level of RF power continuously in ICRF heating and current drive system. A water-cooled co-axial transmission line with the special connector for water sealing while maintaining electrical contact, a vacuum feedthrough of 1 MW RF power which. has two alumina (Al2O3, 97%) ceramic cylinders and O-ring seal instead of a brazed seal for good mechanical and thermal strength, and the phase shifter using liquid instead of gas for insulating dielectric medium were developed. RF tests show that stable operation is possible with the peak voltage over 30 kV for 300 seconds.

 
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