Ion cyclotron radio frequency systems and performance on the tandem mirror experiment-upgrade (TMX-U)

Conference · Thu Dec 01 00:00:00 EST 1983

OSTI ID:5167471

Moore, T L; Molvik, A W; Cummins, W F; Pedrotti, L R; Henderson, A L; Karsner, P G; Scofield, D W; Brooksby, C A

High power ion cyclotron radio frequency (ICRF) systems are now gaining greater attention than before as prime driver ion heating systems. Lawrence Livermore National Laboratory (LLNL) has installed a 200 kW high frequency (HF) transmitter system on its Tandem Mirror Experiment-Upgrade (TMX-U). This paper describes the system, antenna, controls, and monitoring apparatus. The transmitter operates into a high Q antenna installed in the central cell region of the experiment. It incorporates a dual-port feedback system to automatically adjust the transmitter's output power and allow the maximum consistent with the plasma loading of the antenna. Special techniques have been used to measure, in real-time, the dynamically changing loading values presented by the plasma. From the measurements, the antenna impedance can be optimized for specified plasma density.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5167471
• Report Number(s): UCRL-89240; CONF-831203-129; ON: DE84009108
• Resource Relation: Conference: 10. symposium on fusion engineering, Philadelphia, PA, USA, 5 Dec 1983
• Country of Publication: United States
• Language: English

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