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A Regulated Power Supply for the Filaments of A High Power Gyrotron

S. Delaware, R.A. Legg, S.G.E. Pronko

Fusion Science and Technology / Volume 39 / Number 2P2 / March 2001 / Pages 1126-1129

Plasma Engineering, Heating, and Current Drive / dx.doi.org/10.13182/FST01-A11963396

Published:February 8, 2018

As part of the Electron Cyclotron Heating (ECH) Facility upgrade at the DIII–D National Fusion Facility, a regulated AC power supply for the filaments of a 110 GHz Gyrotron was designed, tested and integrated into the new ECH power system.1 A precision regulated filament power supply is essential for maintaining the stability of the cathode temperature and consequentially the gyrotron beam current and rf production.2 This paper provides a description of the design of the filament power supply, presentation of test results, and an assessment of its performance.