The High-Power (3-MW) Long-Pulse (3-s) Radio-Frequency System for Ion Cyclotron Resonance Heating Experiments on TEXTOR
- 1 November 1987
- journal article
- research article
- Published by Taylor & Francis in Fusion Technology
- Vol. 12 (3), 449-475
- https://doi.org/10.13182/fst87-a25078
Abstract
A multimegajoule ion cyclotron resonance heating (ICRH) experiment was installed on the Torus Experiment for Technology-Oriented Research (TEXTOR) tokamak. The system consists of two independent power lines each designed to generate and launch 1.5 MW of radio-frequency (rf) power into the machine during a 3-s period in the 25- to 29-MHz frequency range. Each power line consists of the following items: (a) a 1.5-MW transmitter, (b) a transmission line system, including a two-stub tuner, made of pressurized 155.6-mm (6.125-in.) and 228.6-mm (9-in.) rigid coaxial line components, and (c) an interface linking the transmission line to the antenna of the shielded stripline type placed along the tokamak’s hot liner. Details of the line and antenna diagnostics and data acquisition system together with the subsequent impedance characteristic calculations are given. The rf radiation shielding for the ICRH experiment is explained. The control of the rf setup as a TEXTOR subsystem and the generator pulse control and operation modes are outlined. The antenna loading and power limitation in the presence of plasma and the conditioning procedure are discussed. Finally, the new rf system compatible with the toroidal pump limiter Advanced Limiter Test-II is presented.Keywords
This publication has 7 references indexed in Scilit:
- Carbonization in tokamaksJournal of Nuclear Materials, 1987
- Properties, control and ICR-heating of the plasma in TEXTORPlasma Physics and Controlled Fusion, 1986
- Ion cyclotron resonance heating on TEXTORPlasma Physics and Controlled Fusion, 1986
- Radio Frequency Vacuum Feedthroughs for High-Power ICRF Heating ApplicationsFusion Technology, 1985
- First results from TEXTORPlasma Physics and Controlled Fusion, 1984
- Adverse shielding of the heating field and high ohmic loss introduced by electrostatic shields employed in radio-frequency heating of plasmaJournal of Applied Physics, 1983
- Experimental Investigation of the Shielding of the Heating Field by the Electrostatic Shield of a Stripline ICRF AntennaIEEE Transactions on Plasma Science, 1983