Gyrotron anode modulation of the Electron Cyclotron Resonant Heating (ECRH) from dc to 50 kHz on the Tandem Mirror Experiment-Upgrade (TMX-U)

Conference · Mon Nov 11 00:00:00 EST 1985

OSTI ID:6324361

Williams, C W; Heefner, J W; Rupert, R R

This paper describes control of gyrotron microwave energy output by modulation of gyrotron anode voltage. At present, Electron Cyclotron Resonant Heating (ECRH) uses five gyrotrons on the Tandem Mirror Experiment-Upgrade (TMX-U) for plasma heating. One is in the 10 kG region of each end plug, one at the 5 kG region of each end plug, and one is used for central-cell heating. Also described are the design and operation of the anode modulation system. The operating advantages of gyrotron anode modulation include power balance, independent control of each gyrotron, an ability to modulate microwave output power up to 50 kHz, and gyrotron tuning. The performance results of anode modulation will be discussed. 9 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6324361
• Report Number(s): UCRL-92517; CONF-851102-64; ON: DE86005200
• Resource Relation: Conference: 11. symposium on engineering problems in fusion research, Austin, TX, USA, 18 Nov 1985
• Country of Publication: United States
• Language: English

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