Development and application of European high power CW gyrotrons for ECRH experiments

Author

Magne, R. ; Darbos, C. ; Alberti, S. ; Barbuti, A. ; Blanchard, F. ; Cara, P. ; Clary, J. ; Dubrovin, C. ; Giguet, E. ; Gil, D. ; Hogge, J.P. ; Le Cloarec, G. ; Le Goff, Y. ; Legrand, F. ; Lievin, C. ; Roux, D. ; Thumm, M. ; Tran, M.Q.

Author_Institution

Dept. de Recherches sur la Fusion Controlee, Assoc. Euratom-CEA, St. Paul-lez-Durance, France

fYear

2000

fDate

2-4 May 2000

Abstract

In the frame of a collaboration between Association Euratom-CEA, Association Euratom-Confederation Suisse and Thomson Tubes Electroniques, a high power quasi-CW gyrotron number TH 1506 working at the frequency of 118 GHz has been developed for plasma heating and current drive by Electron Cyclotron Resonance (ECR) interaction. The RF output of the gyrotron TH 1506 is under a Gaussian TEM/sub 0,0/ mode through a sapphire window cooled at liquid nitrogen temperature, characterized by a global efficiency of 30% after conversion to the HE11 mode. This mode allows a low losses transmission. Three of these tubes, rated at 500 kW 2 s, will be used for the Tokamak TCV and six tubes, 500 kW 5 s or 400 kW 210 s, for the Tokamak Tore Supra. One prototype and three series tubes have already been manufactured and accepted.

Keywords

gyrotrons; millimetre wave tubes; plasma radiofrequency heating; 118 GHz; 2 to 210 s; 30 percent; 400 kW; 500 kW; ECR interaction; ECRH experiments; EHF; European high power CW gyrotrons; Gaussian TEM/sub 0,0/ mode; HE11 mode; MM-wave tubes; RF output; TH 1506; Tokamak TCV; Tokamak Tore Supra; current drive; electron cyclotron resonance interaction; high power quasi-CW gyrotron; liquid nitrogen cooled window; low losses transmission; plasma heating; sapphire window; Collaborative work; Cyclotrons; Electron tubes; Frequency; Gyrotrons; Heating; Plasma applications; Plasma temperature; Resonance; Tokamaks;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2000. Abstracts. International

Conference_Location

Monterey, CA, USA

Print_ISBN

0-7803-5987-9

Type

conf

DOI

10.1109/OVE:EC.2000.847558

Filename

847558