Quasioptical Transmission Lines for ECRH at TJ-II Stellarator

International Journal of Infrared and Millimeter Waves - Tập 21 - Trang 1945-1957 - 2000
Ángela Fernández1, Konstantin M. Likin1, Pedro Turullols2, Jorge Teniente2,3, Ramón Gonzalo2, Carlos del Río2, Javier Martí-Canales3, Mario Sorolla2, Romualdo Martín2
1Asociación Euratom-Ciemat para Fusión, Madrid, Spain
2Grupo de Microondas y Milimétricas, Departamento de Ingeniería Eléctrica, Pamplona, Spain
3Electromagnetics Division, European Space Agency, European Space Research and Technology Center (ESA/ESTEC), Noordwijk ZH, The Netherlands

Tóm tắt

Two mirror lines have been used to transmit the microwave power from the powerful microwave generators to the TJ-II plasmas. Both lines have been tested at nominal power level and they are in operation now. This paper deals with the final design of the transmission lines and their testing. Before starting operation at high power level, measurements of the wave beam parameters at low power level were performed. Two horn antennas were designed to simulate the gyrotron output. The results are presented in this paper. A computer code based on Huygens diffraction theory was developed to simulate the propagation of the beam along the mirror lines. A comparison of the theoretical and the experimental results is also shown here.

Tài liệu tham khảo

Alejaldre C. and TJ-II team. "First plasmas in the TJ-II Stellarator". Plasma Physics and Controlled Fusion. Vol 41, A539, 1999. S.O. Kuznezov and V.I. Malygin, ‘Determination of gyrotron wave beam parameters’. International Journal of Infrared and Millimeter Waves, Vol.12,No. 11, 1991, pp. 1241–1252. M. Thumm. ‘High-power microwave transmission systems, external converters and antenna technology’, in Edgcombe C. (ed.), Gyrotron Oscillators, Taylor and Francis, London, 1993, pp 365–401. M. Sorolla, R. Mart′in et al. ‘Beam Waveguide for ECRH at TJ-II’. International Journal of Infrared and Millimeter Waves, Vol. 18,No. 6, June 1997, pp. 1161–1168. Jorge Teniente et al., ‘Corrugated Horn Antenna for Low — Power Testing of the Quasioptical Transmission Lines at TJ-II Stellerator’. International Journal of Infrared and Millimeter Waves, Vol. 20,No. 10, October 1999, pp. 1757–1767. Del R′io C, Liberal A., et al., ‘A mode matching and generalized scattering matrix code for personal computers in a Windows environment’. The 13th Annual Review of Progress in Applied Computational Electromagnetics. Monterey, California. March 1997.