Study of edge plasma interaction with plasma facing components in tokamaks.
Project ID:KJB100430602
Provider:Grant Agency of the Academy of Sciences
Period:Jan 01, 2006 - Dec 31, 2008
Principal Investigator:RNDr. Radomír Pánek, PhD.
Co-investigatorsJ. Brotánková, R. Dejarnac, M. Hron, M. Komm

Aims of the project: Understanding edge plasma physics in tokamaks is very important in order to control particle and power fluxes to plasma facing components. We propose to study thoroughly the effect of this plasma on solid surface via the coupling of two Particle-in-Cell (PIC) codes. This would represent a scientifically original and important step, making possible the simulation of the entire edge plasma region with PIC method. This new tool would allow to clarify fundamental physics of collective movement and will be use to investigate still unclear phenomena. Fast particles generated by the interaction of Lower-Hybrid waves with edge plasma will be studied as well as the effect of these non-maxwellian fast particles on electrostatic probes measurements. However, the main topic will be the modeling of fuel retention and carbon deposition in gaps between the tiles of the direct plasma-wall interaction region of a tokamak in view of the next generation device - ITER.

Progress/Results: 2D Particle-in-cell code, developed in the frame of this grant, enabled to explain new effects connected to the hydrogen, deuterium and tritium retention of the tokamak divertor. Critical areas of the divertor were identified.


Dejarnac R., Komm M., Gunn J. P., Pánek R.: Power flux in the ITER divertor tile gaps during ELMs. Journal of Nuclear Materials 390-391 [-] (2009) 818-821. [ Abstract ] [ Link ]
[International Conference on Plasma-Surface Interactions in Controlled Fusion Devices/18th./. Toledo, 26.05.2008-30.05.2008]

Dejarnac R., Komm M., Stöckel J., Pánek R.: Measurement of plasma flows into tile gaps. Journal of Nuclear Materials 382 [1] (2008) 31-34. [ Abstract ] [ Link ]

Kočan M., Gunn J. P., Komm M., Pascal J.-Y., Gauthier E., Bonhomme G.: On the reliability of scrape-off layer ion temperature measurements by retarding field analyzers. Review of Scientific Instruments 79 [7] (2008) 073502-073502. [ Abstract ] [ Link ]

Cahyna P., Bécoulet M., Pánek R., Fuchs V., Nardon E., Krlín L.: Resonant magnetic perturbations and edge ergodization on the COMPASS tokamak. Plasma Physics Reports 34 [4] (2008) 746-749. [ Abstract ] [ Link ]
[Workshop on Electric Fields, Structures, and Relaxation in Plasmas/10th./. Varšava, 8.7.2007-9.7.2007]

Kocan M., Pánek R., Stöckel J., Hron M., Gunn J. P., Dejarnac R.: Ion temperature measurements in the tokamak scrape-off layer. Journal of Nuclear Materials 363-365 [bez čísla] (2007) 1436-1440. [ Abstract ]

Rubel M.J., Coad J.P., Pitts R.A., Dejarnac R., Gunn J. P., Pánek R.: Co-deposition and fuel inventory in castellated plasma-facing components at JET. IAEA FEC Preprints. Web Mezinarodní atomové agentury (IAEA) : IAEA, 2006. EX/P4-24. [ Abstract ] [ Link ]
[IAEA Fusion Energy Conference/21st./. Chengdu (CN), 16.10.2006-21.10.2006]

Pánek R., Hronová-Bilyková O., Fuchs V., Hron M., Chráska P., Pavlo P., Stöckel J., Urban J., Weinzettl V., Zajac J., Žáček F.: Reinstallation of the COMPASS-D tokamak in IPP ASCR. Czechoslovak Journal of Physics 56 [suppl. B] (2006) 125-137. [ Abstract ]
[Symposium on Plasma Physics and Technology/22nd./. Prague, 26.6.2006-29.6.2006]