Effect of edge plasma turbulence in tokamaks on the particle transport
Project ID:IAA100430502
Provider:Grant Agency of the Academy of Sciences
Period:Jan 01, 2005 - Dec 01, 2007
Recipient - coordinatorInstitute of Plasma Physics, Czech Academy of Sciences, Prague
Principal Investigator:Doc. Ing. Ladislav Krlín, DrSc.
Co-recepient(s) / PI(s):Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Prague -- Ing. Vojtěch Svoboda, CSc.
Co-investigators from IPPR. Pánek, P. Pavlo, J. Stöckel, V. Fuchs, V. Piffl, M. Hron, V. Petržílka, V. Weinzettl, M. Zápotocký, P. Cahyna

Aims of the project: The project continues in our works dealing with an anomalous diffusion of particles in a simple model of the edge plasma turbulence. Our approach was based on the Hamiltonian (not drift) solution of the dynamics and focused on generation of the radial electric field, which might play an important role in mechanisms of transport barrier generation. We shall study the diffusion in more realistic potentials obtained from electrostatic and Alfvén drift turbulence and in potentials measured on CASTOR tokamak. Following our previous works, we assume that the diffusion determined by means of the Hamiltonian formalism will differ for ion impurities and electrons, and, therefore, there is a possibility of the electric field generation. The aim of the project is to confirm it in more exact and realistic models and to study the dynamics of particles trapped in the potential structures and the dynamics of particles in the turbulent potential and tokamak magnetic field.

Progress/Results: Study of anomalous ion diffusion in the electrost. turbulence predicts Levy walk kinetics for typical tokamak parameters. The presence of elektrost. turbulence changes ion dynamics in the vicinity of magnetic islands. Hamiltonian approach is necessary.


Kurian M., Krlín L., Cahyna P., Pánek R.: Particle dynamics in the rmp ergodic layer under the influence of edge plasma turbulence. Acta polytechnica 53 [4] (2013) 359-364. [ Abstract ] [ Link ]

Seidl J., Krlín L., Pánek R., Pavlo P., Stöckel J., Svoboda V.: Simulations of anomalous ion diffusion in experimentally measured turbulent potential. European Physical Journal D 54 [2] (2009) 399-407. [ Abstract ] [ Link ]
[Symposium on Plasma Physics and Technology/23rd./. Prague, 16.06.2008-19.06.2008]

Krlín L., Papřok R., Svoboda V.: Modelling of Lévy walk kinetics of charged particles in edge electrostatic turbulence in tokamaks. European Physical Journal D 48 [1] (2008) 95-109. [ 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]

Cahyna P., Krlín L., Pánek R., Kurian M.: Interaction of particles with systems of magnetic islands and edge turbulence in tokamaks in fully Hamiltonian approach. 34th European Physical Society Conference on Plasma Physics Contributed Papers. Varšava : EPS, 2007 - (Gąsior, P.; Wołowski, J.) P4.044-P4.044. ISBN 978-83-926290-0-9. - (Europhysics conference abstracts. 31F). [ Abstract ] [ Link ]
[EPS Conference on Plasma Physics and Controlled Fusion/34th./. Varšava (PL), 02.07.2007-06.07.2007]

Krlín L., Papřok R., Svoboda V.: Lévy walk kinetics of charged particles in a model of electrostatic turbulence. XXVIII International Conference on Phenomena in Ionized Gases. Prague : Institute of Plasma Physics AS CR, v.v.i, 2007 - (Schmidt, J.; Šimek, M.; Pekárek, S.; Prukner, V.) S. 399-402. ISBN 978-80-87026-01-4. - (ICPIG). [ Abstract ]
[International Conference on Phenomena in Ionized Gases/28th./. Prague (CZ), 15.07.2007-20.07.2007]

Horák J., Krlín L., Raidl A.: Deterministický chaos a podivná kinetika. Praha : Academia, 2007. 164 s. ISBN 978-80-200-1531-0 [ Abstract ]

Cahyna P., Pánek R., Fuchs V., Krlín L., Bécoulet M., Nardon E.: Field Ergodization by External Coils on the COMPASS Tokamak. WDS'07 Proceedings of contributed papers. Praha : MATFYZPRESS, Praha, 2007 - (Šafránková, J.; Pavlů, J.) S. 240-245. ISBN 978-80-7378-024-1. [ Abstract ] [ Link ]
[16th Annual Student Conference Week of Doctoral Students 2007. Praha (CZ), 05.06.2007-08.06.2007]

Cahyna P., Krlín L.: Full Hamiltonian description of the interaction of particles with magnetic islands in tokamak. Czechoslovak Journal of Physics 56 [4] (2006) 367-380. [ Abstract ]

Krlín L., Cahyna P.: Particle diffusion in a system of magnetic islands in tokamaks in fully Hamiltonian approach. Czechoslovak Journal of Physics 56 [suppl.B] (2006) 111-117. [ Abstract ]
[Symposium on Plasma Physics and Technology/22nd./. Praha, 26.6.2006-29.6.2006]

Pánek R., Krlín L., Tender M., Tskhakaya D., Kuhn S., Svoboda V., Klíma R., Pavlo P., Stöckel J., Petržílka V.: Anomalous Ion Diffusion and Radial-Electric-Field Generation in a Turbulent Edge Plasma Potential Weakly Correlated in Time and Space. Physica Scripta 72 [-] (2005) 327-332. [ Abstract ]

Weinzettl V.: PROSTOROVÉ A ČASOVÉ CHOVÁNÍ LEHKÝCH NEČISTOT VE VYSOKOTEPLOTNÍM PLAZMATU TOKAMAKU CASTOR. Ustav fyziky plazmatu AV ČR. Obhájeno: Katedra fyzikální elektroniky Fakulta jaderná a fyzikálně inženýrská ČVUT, V Holešovičkách 2, 18000 Praha 8, ČR. 25.4. 2005. - Praha, 2004. 112 s.