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The Frascati Tokamak Upgrade (FTU) is a machine included in the European thermonuclear fusion programme aimed at investigating high density plasmas in the presence of powerful additional RF heating systems. This paper describes the LHRH system for FTU and analyses both its main performances and experimental results. The lower hybrid resonant heating (LHRH) system, based on 9 independent modules, works at 8 GHz and will generate, at full performance, a total of 9 MW, in pulsed regime. The microwave power source is a gyrotron oscillator, developed for this specific application and able to produce up to 1 MW. An overmoded, low loss, circular waveguide transmits the RF power towards the plasma, and an array of 12 x 4 rectangular waveguides launches this power into the plasma.

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Authors: BALDI L, ENEA, Centro Ricerche Energia Brasimone, Bologna (IT);MAFFIA G, ENEA, Centro Ricerche Energia Brasimone, Bologna (IT);DIGIOVENALE S ET AL., ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Paper presented: 23rd European Microwave Conference, Madrid (ES), September 6-9, 1993
Availability: Available from (1) as Paper EN 37738 ORA
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