A 8 GHz, high power, microwave system for the heating of thermonuclear plasmas

Author

Baldi, L. ; Digiovenale, S. ; Fortunato, T. ; Maffia, G. ; Mirizzi, F. ; Roccon, M. ; Sassi, M. ; Tuccillo, A.A.

Author_Institution

ENEA, C.R.E. Brasimone - P.O. Box 1 - 40032 Camugnano, (Bologna), ITALY. TEL.: +39 534 9150 1; FAX.: + 39 534 91799

fYear

1993

fDate

6-10 Sept. 1993

Firstpage

416

Lastpage

418

Abstract

The Frascati Tokamak Upgrade (FTU) is a machine included in the European Thermonuclear Fusion Program aimed at investigating high density plasmas in presence of powerful additional RP heating systems. The Lower Hybrid Resonant Heating (LHRH) system, based on 9 independent modules, works at 8 GHz, and will generate, at full performances, a total amount of 9 MW, in pulsed regime (pulse length = 1 s, duty cycle = 1/600). The microwave power source is a gyrotron oscillator, developed by Thomson Tubes Electroniques (France) for this specific application, able to produce up to 1 MW. An overmoded, low loss, circular waveguide transmits the RF power toward the plasma; an array of 12 Ã— 4 rectangular waveguides (the "grill") launches this power into the plasma. The paper describes the LHRH system for FTU and analyses both its main performances and experimental results.

Keywords

Electromagnetic heating; Fusion power generation; Fusion reactors; High power microwave generation; Plasma applications; Plasma density; Plasma waves; Rectangular waveguides; Resonance; Tokamaks;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1993. 23rd European

Conference_Location

Madrid, Spain

Type

conf

DOI

10.1109/EUMA.1993.336580

Filename

4136641