THE ECRH SYSTEM FOR DITE AND COMPASS EXPERIMENTS
Electron Cyclotron Resonance Heating is one of the main auxiliary heating mechanisms in the Culham Laboratory fusion programme. The system described here is aimed initially at injecting 0.6MW of 60 GHz power into the existing DITE tokamak. A planned increase in power by the addition of further stages will result in a system capable of delivering up to 2MW of power at 60 GHz into the new COMPASS tokamak currently under construction. The scientific aims and the general technical structure of the system will be described. The description will cover layout, power supplies, cooling systems, safety and the microwave transmission system necessary to convey the power from the gyrotron sources to the plasmas which can be situated up to 50 metres distant. A highly specialised transmission line consisting of circular overmoded waveguide with filters, bends and mode converters is necessary and data will be presented showing the performance of these items and their method of manufacture. Most of these units have been previously tested on the CLEO experiment. In addition to the 2 MW 60 GHz system a single 200 kW source at 28 GHz will be used for pre-ionisation.
Bibliographic Reference: 14TH SOFT CONFERENCE, AVIGNON (FRANCE), SEPT. 8-12, 1986 VOL. 1, PP. 723-728 1895 P., 1986, VOL. 1 AND VOL. 2, ISBN 0 08 034935 8 WRITE TO PERGAMON PRESS, HEADINGTON HILL HALL, OXFORD, OX3 0BW (UK), PRICE: UKL 220 (FOR BOTH VOLS.)
Record Number: 1989126046401 / Last updated on: 1989-01-01
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