Study of Zonal flows and Alfvén eigenmodes in the COMPASS tokamak plasma
Project ID:GA16-25074S
Provider:Czech Science Foundation
Period:Jan 01, 2016 - Dec 31, 2018
Principal Investigator:Ing. Martin Hron, Ph.D.
Co-investigatorsJ. Seidl, T. Markovič, J. Havlíček, P. Háček, J. Krbec, V. Weinzettl, J. Horáček, O. Grover, F. Jaulmes, K. Jiráková

Aims of the project: There are still several open issues related to the successful operation of future fusion devices (and ITER in particular). Within this project we aim to address two of these, namely: 1) role of the multi-scale physics in uncovering physics of the isotope effect in fusion plasmas, particularly in the L-H transition; 2) study of Alfvén eigenmodes (AE), which can have significant impact on fast particle confinement, and identification of their driving mechanism on COMPASS. We will study the role of multi-scale physics experimentally by comparing characteristics of the large scale Zonal Flows (ZF) and their high-frequency branch, Geodesic Acoustic Modes (GAMs) on one side and the local, micro-scale, turbulence characteristics on the other side. We will use the same diagnostic tools simultaneously for identification of possibly non-standard driving mechanism of AE on COMPASS. The joint effort in these areas, proper and deep characterization of both phenomena, may then shed light also on the possible interaction of ZF/GAMs and AE, recently suggested in theoretical works. Goals Characterize: * Zonal flows (ZF) on COMPASS * driving mechanism of Alfvén eigenmodes (AE) on COMPASS * isotope effect on ZF, local turbulence characteristics, and AE * AE and ZF interaction with fast particles and magnetic perturbations * mutual interaction of ZF, AE and sawtooth oscillations

Results:

Seidl J., Jiráková K., Adámek J., Grover O., Horáček J., Hron M., Vondráček P.: Fluctuations in the scrape-off layer and edge plasma of the COMPASS tokamak. 45th EPS Conference on Plasma Physics. Vol. 42A. Mulhouse: 45th EPS Conference on Plasma Physics, 2018, s. 481-484, č. článku P1.1103. ISBN 9781510868441. [ Abstract ] [ Link ]
[45th European Physical Society Conference on Plasma Physics. Praha (CZ), 02.07.2018-06.07.2018]

Seidl J., Jiráková K., Adámek J., Grover O., Horáček J., Hron M., Vondráček P.: Fluctuations in the scrape-off layer and edge plasma of the COMPASS tokamak. Europhysics Conference Abstracts. Vol. 42A. European Physical Society, 2018 - (Coda, S.; Berndt, J.; Lapenta, G.; Mantsinen, M.; Michaut, C.; Weber, S.). ISBN 979-10-96389-08-7. [ Abstract ] [ Link ]
[45th European Physical Society Conference on Plasma Physics. Praha (CZ), 02.07.2018-06.07.2018]

Grover O., Seidl J., Refy D., Adámek J., Vondráček P., Tomeš M., Junek P., Háček P., Krbec J., Weinzettl V., Hron M., Zoletnik S.: Limit cycle oscillations measurements with Langmuir and ball-pen probes on COMPASS. Nuclear Fusion 58 [11] (2018) č. článku 112010. [ Abstract ] [ Link ]
[16th International Workshop on H-mode Physics and Transport Barriers. Petrohrad, 13.09.2017-13.09.2017]

Danilov A., Dnestrovskij Yu.N., Melnikov A.V., Cherkasov S. V., Eliseev L.G., Dnestrovskij A.Yu., Lysenko S.E., Subbotin G. F., Vershkov V.A., Havlíček J., Urban J., Stöckel J., Bílková P., Böhm P., Šos M., Hron M., Komm M., Pánek R.: Heat and particle transport simulation in COMPASS and T-10 with canonical profile transport model. Europhysics Conference Abstracts. Vol. 42A. European Physical Society, 2018 - (Coda, S.; Berndt, J.; Lapenta, G.; Mantsinen, M.; Michaut, C.; Weber, S.), s. 1656-1659, č. článku P5.1088. ISBN 979-10-96389-08-7. [ Abstract ] [ Link ]
[45th European Physical Society Conference on Plasma Physics. Praha (CZ), 02.07.2018-06.07.2018]

Krbec J., Háček P., Berta M., Seidl J., Hron M., Pánek R.: Fast density reconstruction of Li-BES signal on the COMPASS tokamak. Review of Scientific Instruments 89 [11] (2018) č. článku 113504. [ Abstract ] [ Link ]

Háček P., Berta M., Anda G., Aradi M., Bencze A., Dunai D., Krbec J., Pánek R., Refy D.I., Stöckel J., Weinzettl V., Zoletnik S.: Development of an ion beam detector for the atomic beam probe diagnostic. Review of Scientific Instruments 89 [11] (2018) č. článku 113506. [ Abstract ] [ Link ]

Kovařík K., Ďuran I., Stöckel J., Seidl J., Adámek J., Spolaore M., Vianello N., Háček P., Hron M., Pánek R.: Filamentary probe on the COMPASS tokamak. Review of Scientific Instruments 88 [3] (2017) č. článku 035106. [ Abstract ] [ Link ]

Jirman T., Peterka M., Seidl J., Cavalier J., Weinzettl V., Brochard F., Cahyna P., Harrison J., Imríšek M., Kirk A., Pánek R.: Edge plasma study using a fast visible light camera in the COMPASS tokamak. Energy Procedia. Vol. 127. Amsterdam: Elsevier Ltd, 2017 - (Jimenez, G.; Capriotti, L.; Cao, L.), s. 360-368. Elsevier Science. ISSN 1876-6102. [ Abstract ] [ Link ]
[International Youth Nuclear Congress 2016, IYNC 2016. Hangzhou (CN), 24.07.2016-30.07.2016]

Camilo de Souza F., Elfimov A., Galvao R.M.O., Krbec J., Seidl J., Stöckel J., Hron M., Havlíček J., Mitošinková K.: Geodesic mode instability driven by electron and ion fluxes during neutral beam injection in tokamaks. Physics Letters. A 381 [36] (2017) 3066-3070. [ Abstract ] [ Link ]

Grover O., Adámek J., Seidl J., Devitre A., Šos M., Vondráček P., Bílková P., Hron M.: First simultaneous measurements of Reynolds stress with ball-pen and Langmuir probes. Review of Scientific Instruments 88 [6] (2017) č. článku 063501. [ Abstract ] [ Link ]

Weinzettl V., Adámek J., Berta M., Bílková P., Bogár O., Böhm P., Cavalier J., Dejarnac R., Dimitrova M., Ficker O., Fridrich D., Grover O., Háček P., Havlíček J., Havránek A., Horáček J., Hron M., Imríšek M., Komm M., Kovařík K., Krbec J., Markovič T., Matveeva E., Mitošinková K., Mlynář J., Naydenkova D., Pánek R., Papřok R., Peterka M., Podolník A., Seidl J., Šos M., Stöckel J., Tomeš M., Varavin M., Varju J., Vlainic M., Vondráček P., Zajac J., Žáček F., Stano M., Anda G., Dunai D., Krizsanóczi T., Refy D., Zoletnik S., Silva A., Gomes R., Pereira T., Popov Tsv., Sarychev D., Ermak G.P., Zebrowski J., Jakubowski M., Rabinski M., Malinowski K., Nanobashvili S., Spolaore M., Vianello N., Gauthier E., Gunn J. P., Devitre A.: Progress in diagnostics of the COMPASS tokamak. Journal of Instrumentation 12 [December] (2017) č. článku C12015. [ Abstract ] [ Link ]
[European Conference on Plasma Diagnostics (ECPD2017)/2./. Bordeaux, 18.04.2017-21.04.2017]

Markovič T., Melnikov A., Seidl J., Eliseev L., Havlíček J., Havránek A., Hron M., Imríšek M., Kovařík K., Mitošinková K., Mlynář J., Pánek R., Stöckel J., Varju J., Weinzettl V.: Alfvén-character oscillations in ohmic plasmas observed on the COMPASS tokamak. EPS 2017: 44th European Physical Society Conference on Plasma Physics. Vol. 41F. Mulhouse: European Physical Society, 2017 - (Fajardo, M.; Westerhof, E.; Riconda, C.; Melzer, A.; Bret, A.; Dromey, B.), č. článku P5.140. Europhysics Conference Abstracts (ECA). ISBN 979-10-96389-07. [ Abstract ]
[EPS 2017 Conference on Plasma Physics/44./. Belfast (IE), 26.06.2017-30.06.2017]

Refy D.I., Zoletnik S., Grover O., Seidl J., Hron M., Dunai D., Anda G., Bencze A., Háček P., Krbec J., Weinzettl V.: Characterization of the electron density profile dynamic and flow velocity modulation during oscillations close to the L-H threshold at COMPASS. EPS 2017: 44th European Physical Society Conference on Plasma Physics. Vol. 41F. Mulhouse: European Physical Society, 2017 - (Fajardo, M.; Westerhof, E.; Riconda, C.; Melzer, A.; Bret, A.; Dromey, B.), č. článku P4.178. Europhysics Conference Abstracts (ECA). ISBN 979-10-96389-07. [ Abstract ]
[EPS 2017 Conference on Plasma Physics/44./. Belfast (IE), 26.06.2017-30.06.2017]

Grover O., Seidl J., Adámek J., Vondráček P., Tomeš M., Weinzettl V., Hron M., Pánek R.: Reynolds stress and fluctuation measurements with Langmuir and ball-pen probes in the vicinity of the L-H transition on COMPASS. EPS 2017: 44th European Physical Society Conference on Plasma Physics. Vol. 41F. Mulhouse: European Physical Society, 2017 - (Fajardo, M.; Westerhof, E.; Riconda, C.; Melzer, A.; Bret, A.; Dromey, B.), č. článku P2.181. Europhysics Conference Abstracts (ECA). ISBN 979-10-96389-07. [ Abstract ]
[EPS 2017 Conference on Plasma Physics/44./. Belfast (IE), 26.06.2017-30.06.2017]

Markovič T., Melnikov A., Seidl J., Eliseev L., Havlíček J., Havránek A., Hron M., Imríšek M., Kovařík K., Medvedev S., Mitošinková K., Mlynář J., Naydenkova D., Pánek R., Stöckel J., Varju J., Weinzettl V.: Observations of Alfvénic-character oscillations in ohmic plasmas on the COMPASS tokamak. EPS 2017: 44th European Physical Society Conference on Plasma Physics. Vol. 41F. Mulhouse: European Physical Society, 2017 - (Fajardo, M.; Westerhof, E.; Riconda, C.; Melzer, A.; Bret, A.; Dromey, B.), č. článku P5.005. Europhysics Conference Abstracts (ECA). ISBN 979-10-96389-07. [ Abstract ]
[EPS 2017 Conference on Plasma Physics/44./. Belfast (IE), 26.06.2017-30.06.2017]

Lovell J., Stephen R., Bray S., Naylor G., Elmore S., Willett H., Peterka M., Dimitrova M., Havránek A., Hron M., Sharples R.: A compact, smart Langmuir Probe control module for MAST-Upgrade. Journal of Instrumentation 12 [November] (2017) č. článku C11008. [ Abstract ] [ Link ]
[European Conference on Plasma Diagnostics (ECPD2017)/2./. Bordeaux, 18.04.2017-21.04.2017]

Seidl J., Krbec J., Hron M., Adámek J., Hidalgo C., Markovič T., Melnikov A.V., Stöckel J., Weinzettl V., Aftanas M., Bílková P., Bogár O., Böhm P., Eliseev L.G., Háček P., Havlíček J., Horáček J., Imríšek M., Kovařík K., Mitošinková K., Pánek R., Tomeš M., Vondráček P.: Electromagnetic characteristics of geodesic acoustic mode in the COMPASS tokamak. Nuclear Fusion 57 [12] (2017) č. článku 126048. [ Abstract ] [ Link ]

Elfimov A.G., Camilo de Souza F., Galvao R.M.O., Krbec J., Seidl J., Stöckel J., Hron M., Havlíček J., Mitošinková K.: Geodesic mode instability driven by electron and ion fluxes in tokamaks. EPS 2016: 43rd European Physical Society Conference on Plasma Physics. Vol. 40A. Mulhouse: European Physical Society, 2016 - (Mantica, P.; Giruzzi, G.; Fajardo, M.; Gans, T.; Poedts, S.; Vennekens, N.), P2.038. Europhysics Conference Abstracts (ECA), ECA, 40A. ISBN 2-914771-99-1. [ Abstract ]
[EPS 2016: Conference on Plasma Physics/43./. Leuven (BE), 04.07.2016-08.07.2016]

Markovič T., Melnikov A., Seidl J., Eliseev L., Havlíček J., Havránek A., Hron M., Imríšek M., Kovařík K., Medvedev S., Mitošinková K., Mlynář J., Naydenkova D., Pánek R., Stöckel J., Varju J., Weinzettl V.: Observations of ALfvénic-character oscillations in ohmic plasmas on the COMPASS tokamak. EPS 2016: 43rd European Physical Society Conference on Plasma Physics. Vol. 40A. Mulhouse: European Physical Society, 2016 - (Mantica, P.; Giruzzi, G.; Fajardo, M.; Gans, T.; Poedts, S.; Vennekens, N.), č. článku P5.005. Europhysics Conference Abstracts (ECA), ECA, 40A. ISBN 2-914771-99-1. [ Abstract ]
[EPS 2016: Conference on Plasma Physics/43./. Leuven (BE), 04.07.2016-08.07.2016]