Institute of Plasma Physics - project detail 00044

Dissipation of strong electromagnetic waves and its consequences near antennas
Project ID:	GA202/04/0360
Provider:	Czech Science Foundation
Period:	Jan 01, 2004 - Dec 31, 2006
Recipient - coordinator	Institute of Plasma Physics, Czech Academy of Sciences, Prague
Principal Investigator:	Ing. Václav Petržílka, DrSc.
Co-recepient(s) / PI(s):	Faculty of Mathematics and Physics, Charles University, Prague -- Prof. RNDr. Milan Tichý, DrSc.
Co-investigators from IPP	V. Fuchs, L. Krlín, R. Pánek, P. Pavlo, J. Stöckel, F. Žáček, J. Adámek
Aims of the project: We propose to explore in detail processes of dissipation of waves launched by antennas in fusion devices and their consequences for plasma dynamics near the antennas: The focus of this study will be the self-consistent process of generation of secondary plasma flows, plasma density variations and the electrostatic field evolution near the antenna ensuing from the absorption of the launched wave. The plasma reaction, in turn, self-consistently acts upon the original process of the parasitic absorption and upon the wave-plasma coupling. Special attention will be also given to large thermal and particle flows, associated with the wave dissipation, along the plasma confining magnetostatic field. The particle and thermal flow can subsequently impinge uponand damage the plasma vessel at relatively large distances from the antenna.
Progress/Results: We explored parasitic dissipation of waves near antennas in tokamaks resulting from fast particle generation near antennas, and consequent variations in plasma parameters (flows, density variations). Our previous theoretical results were confirmed in exp
Results:
Colas L., Gunn J. P., Nanobashvili I., Petržílka V., Goniche M., Ekedahl A., Heuraux S., Joffrin E., Saint-Laurent F., Balorin C., Lowry C., Basiuk V.: 2-D mapping of ICRF-induced SOL perturbations in. Journal of Nuclear Materials 363-365 [4] (2007) 555-559. [ Abstract ]
Fuchs V., Gunn J. P.: Mach probe interpretation in the presence of supra-thermal electrons. Physics of Plasmas 14 [3] (2007) 032501-1. [ Abstract ]
Fuchs V., Pánek R., Urban J., Žáček F., Stöckel J., Voitsekovitch I., Fitzegerald M., Valovič M., Hronová-Bilyková O.: Modeling of plasma performance on COMPASS-D tokamak in the presence of NBI and LHCD. 33rd European Physical Society Conference on Plasma Physics. Frascati : European Physical Society, 2006 - (De Marco, F.; Vlad, G.; Duval, B.) P1-103-P1-103. ISBN 2-914771-40-1. - (Europhysics Conference Abstracts. 301). [ Abstract ] [European Physical Society Conference on Plasma Physics/33rd./. Řím (IT), 19.06.2006-23.06.2006]
Fuchs V., Gunn J. P.: On the integration of equations of motion for particle-in-cell codes. Journal of Computational Physics 214 [-] (2006) 299-315. [ Abstract ]
Fuchs V., Gunn J. P., Dejarnac R.: Langmuir probe characteristic in the presence of suprathermal electrons generated in the vicinity of a lower hybrid grill. Proceedings of 32nd EPS Conference on Plasma Physics. Tarragona : European Physical Society, 2005 - (Milligen, B.; Hidalgo, C.) P-4.005. ISBN 2-914771-24-X. - (EPS. 29C). [ Abstract ] [EPS Conference on Plasma Physics/32nd./. Tarragona (ES), 27.06.2005-01.07.2005]
Fuchs V.: Asymptotic treatment of the three-wave nonlinear parametric interaction. Journal of Plasma Physics 71 [2] (2005) 151-156. [ Abstract ]
Rantamäki K., Petržílka V., Andrew P., Coffey I., Ekedahl A., Erents K., Fuchs V., Goniche M., Granucci G., Joffrin E., Karttunen S. J., Lomas P. J., Mailloux J., Mantsinen M., Mayoral M.-L., McDonald D.C., Noterdaeme J.-M., Parail V., Tuccillo A. A., Žáček F.: Bright spots generated by lower hybrid waves on JET. Plasma Physics and Controlled Fusion 47 [7] (2005) 1101-1108. [ Abstract ]
Žáček F., Petržílka V., Goniche M.: Positive biasing of plasma in front of LH antennae. Plasma Physics and Controlled Fusion 47 [7] (2005) L17-L24. [ Abstract ]
Žáček F., Petržílka V., Goniche M.: Radial and toroidal electric field measurement in front of the CASTOR tokamak LH launcher. 32nd EPS Conference on Plasma Physics. EPS, 2005 - (Hidalgo, C.; Milligen van, B.) P-4.004. ISBN 2-914771-24-x. - (EPS). [ Abstract ] [European Physical Society Conference on Plasma Physics/32nd./. Tarragona (ES), 27.06.2005-01.07.2005]
Fuchs V., Gunn J. P., Petržílka V., Goniche M.: Quasineutral simulations of plasma response to the lower hybrid antenna electric field. 31st European Physical Society Conference on Plasma Physics. London : European Physical Society(EPS), 2004. P-5.142. ISBN 2-914771-22-3. - (28G). [ Abstract ] [European Physical Society Conference Plasma Physics/31st./. London (GB), 28.06.2004-02.07.2004]
Preinhaelter J., Urban J., Pavlo P., Shevchenko V., Valovic M., Vahala L., Vahala G.: ECE from MAST - Gaussian beams and antenna aiming problem. Czechoslovak Journal of Physics 54 [suppl.C] (2004) C116-C122. [ Abstract ] [Symposium on Plasma Physics and Technology /21./. Praha, 14.06.2004-17.06.2004]
Goniche M., Petržílka V., Devynck P., Gunn J., Žáček F., Achard J., Gauthier E., Ekedahl A., Fuchs V., Pascal J. Y.: Exploration of fast particle generation and density fluctuations in front of the lower hybrid grills on Tore Supra. 31st European Physical Society Conference on Plasma Physics. London : European Physical Society, 2004. P-4.110. ISBN 2-914771-22-3. - (28G). [ Abstract ] [European Physical Society Conference Plasma Physics/31st./. London (GB), 28.06.2004-02.07.2004]
Petržílka V., Krlín L., Ullschmied J., Tataronis J. A.: External Magneto-static Field Effects on Plasma Flows Arising from Primary Electron Acceleration in Two Crossed Laser Beams. 31st European Physical Society Conference on Plasma Physics. London : European Physical Society(EPS), 2004. s. P-2.011. ISBN 2-914771-22-3. - (28G). [ Abstract ] [European Physical Society Conference on Plasma Physics/31st./. Londýn (GB), 28.06.2004-02.07.2004]
Mlynář J., Ongena J., Ďuran I., Hron M., Pánek R., Petržílka V., Žáček F.: JET:Preparing the future in fusion. Czechoslovak Journal of Physics 54 [suppl.C] (2004) C28-C38. [ Abstract ] [Symposium on Plasma Physics and Technology/21st./. Praha, 14.06.2004-17.06.2004]
Petržílka V., Fuchs V., Goniche M., Krlín L., Žáček F.: Modeling of the Effects of Random Fields in Front of LH Grills on the Local Fast Particle Production. 31st European Physical Society Conference Plasma Physics. London : European Physical Society, 2004. s. P-5.141. ISBN 2-914771-22-3. - (28G). [ Abstract ] [European Physical Society Conference Plasma Physics/31st./. London (GB), 28.06.2004-02.07.2004]
Žáček F., Petržílka V., Adámek J., Goniche M., Devynck P.: Positive plasma biasing in front of the lower hybrid grill of CASTOR tokamak. 12th International Congress on Plasma Physics. Nice, 2004. s. -. [ Abstract ] [International Congress on Plasma Physics/12th./. Nice (FR), 25.10.2004-29.10.2004]