Institute of Plasma Physics - project detail 00065

New launchers of lower hybrid and electron Bernstein waves for heating and current drive in tokamaks
Project ID:	GA202/00/1215
Provider:	Czech Science Foundation
Period:	Jan 01, 2000 - Dec 31, 2002
Principal Investigator:	Ing. Josef Preinhaelter, DrSc.
Aims of the project: An intensive search for a structure capable of direct launch of the electron Bernstein waves into the spherical tokamaks (NSTX - Princeton, Globus - St. Peterbug, MST - Madison) is being carried out. The quasi-optical grill suits well for a range of 15-3OGHz, because its diffracting elements - rods - are sufficiently robust even for these rather short wavelength waves. One of aims of this project is the development of a quasi-optical grill coupling code using the matrix of plasma surface impedance determined by direct finite element integration of full equations describing a propagation of electromagnetic waves in a warm tokamak plasma. Then we would like to design the optimized quasi-optical grills for NSTX and CASTOR tokamaks. The latter will beused for an experimental verification of direct launch of Bernstein waves into the plasma. We propose to adapt our code describing the wave diffraction on rounded rods for other launching structures, (especially for PAM (BGHz) designed for FTI and to
Results:
Zajac J., Preinhaelter J., Žáček F., Nanobashvili S.: Microwave experiments on the tokamak CASTOR: fundamental ECE radiometry. Czechoslovak Journal of Physics 54 [suppl. C] (2004) C68-C73. [ Abstract ] [Symposium on Plasma Physics and Technology/21st./. Praha, 14.06.2004-17.06.2004]
Preinhaelter J., Pavlo P., Shevchenko V., Valovic M., Vahala L., Vahala G.: Electron Bernstein wave-X-O mode conversion and electron cyclotron emission in MAST. Review of Scientific Instruments 74 (2003) 1437-1440. [ Abstract ]
Preinhaelter J., Shevchenko V., Valovic M., Pavlo P., Vahala L., Vahala G.: EBW-X-O and ECE in MAST. Bulletin of the American Physical Society 47 [9] (2002) 211. [ Abstract ] [Annual Meeting of the Division of Plasma Physics of the American Physical Society /44./. Orlando, Florida, 11.11.2001-15.11.2001]
Preinhaelter J., Shevchenko V., Valovič M., Vahala G., Vahala L., Pavlo P.: Interpretation of ECE measurement on MAST. 29th EPS Conference on Plasma Physics and Controlled Fusion-Contributed Papers. Mulhouse : European Physical Society, 2002 - (Behn, R.; Varandas, C.) s. P-5.095. [ Abstract ] [ Link ] [EPS Conference on Controlled Fusion and Plasma Physics/29th./. Montreux (CH), 17.06.2002-21.06.2002]
Preinhaelter J., Irzak M. A., Vahala G., Vahala L.: Mode Conversion Processes for Electron Bernstein Wave Excitation in Spherical Tori. 0-7803-7141-0. In: Pulsed Power Plasma Science 2001. Piscataway : IEEE Service Center, 2001. s. 537. - (IEEE Conference Record-Abstracts.) [ Abstract ] [IEEE International Conference on Plasma Science /28./. Las Vegas (US), 17.06.2001-22.06.2001]
Preinhaelter J., Irzak M. A., Tregubova E., Vahala G., Vahala L., Žáček F.: ECE on CASTOR. 0-7354-0038-5. In: Radio frequency power in plasmas. New York : Melville, 2001 - (Mau, T.; de Grossie, J.) s. 326-329. - (AIP Conference Proceedings.. 595). [ Abstract ] [Topical Conference on Radio frequency /14./. Oxnard (US), 07.05.2001-09.05.2001]
Preinhaelter J., Stöckel J., Žáček F., Irzak M., Tregubova E., Vahala G., Vahala L.: Influence of the plasma surface density fluctuations on ECE in CASTOR. Bulletin of the American Physical Society 46 [8] (2001) 307. [ Abstract ] [Annual Meeting of the Division of Plasma Physics of the American Physical Society/43rd./. Long Beach, 29.10.2001-02.11.2001]
Preinhaelter J., Irzak M. A., Vahala G., Vahala L.: ECE and ECRH from O-X-EBW Mode Conversion in Spherical Plasmas. Bulletin of the American Physical Society 45 [7] (2000) 254. [ Abstract ] [Annual Meeting of the Division of Plasma Physics of the American Physical Society and the 10th International Congress on Plasma Physics /42./. Quebec City, 23.10.2000-27.10.2000]
Preinhaelter J., Žáček F., Irzak M. A., Vahala L., Vahala G.: ECRH on CASTOR. Czechoslovak Journal of Physics 50 [S 3] (2000) 51-56. [ Abstract ] [Symposium on Plasma Physics and Technology/19th./. Prague, 06.06.2000-09.06.2000]