Fast heat flux measurements in divertor region in tokamak COMPASS using ball-pen probes with sub-microsecond temporalresolution.
Project ID:GA15-10723S
Provider:Czech Science Foundation
Period:Jan 01, 2015 - Dec 31, 2017
Principal Investigator:Mgr. Jiří Adámek, Ph.D.
Co-investigatorsJ. Seidl, J. Stöckel, J. Horáček, P. Vondráček, M. Komm, V. Weinzettl

Aims of the project: The investigation of the heat flux on the divertor during fast phenomena so-called ELM (periodical explosion of the plasma) is an important topic for large scale devices such tokamak JET, ASDEX Upgrade and crucial issue for the future device tokamak ITER in order to determine the life time and physical sputtering of the divertor targets. The divertor targets of ITER will be made of tungsten material. Its surface will be periodically melted and then solidify due to ELMs. This process will progressively erode the divertor targets and release the impurities to the plasma according to heat flux of each ELM. The heat flux measurements during ELM require high temporal resolution in order of microseconds. Nevertheless, such a measurements are not yet available at any devices. High quality infrared camera can provide max. 30 kHz frame rate, which is not enough to investigate precisely ELMs. Therefore, we propose to use a novel probe diagnostic, ball-pen probe, and to perform the systematic measurements in divertor on tokamak COMPASS with sub-microsecond time resolution.

Results:

Horáček J., Entler S., Vondráček P., Adámek J., Šesták D., Hron M., Pánek R., Dejarnac R., Weinzettl V., Kovařík K., Van Oost G.: Plans for Liquid Metal Divertor in Tokamak Compass. Plasma Physics Reports 44 [7] (2018) 652-656. [ Abstract ] [ Link ]
[International Symposium on Liquid metals Applications for Fusion (ISLA2017) /5./. Moscow, 25.09.2017-27.09.2017]

Horáček J., Entler S., Vondráček P., Adámek J., Šesták D., Hron M., Pánek R., Dejarnac R., Weinzettl V., Kovařík K., Van Oost G.: PLANIRUYEMYY ZHIDKOMETALLICHESKIY DIVERTOR DLYA TOKAMAKA COMPASS. FIZIKA PLAZMY. Moskva, 2018, s. 557-563. ISSN 0367-2921. [ Abstract ] [ Link ]
[International symposium on liquid metals applications for fusion (ISLA-5). Moskva (RU), 25.09.2017-25.09.2017]

Matějíček J., Weinzettl V., Vilémová M., Morgan T.W., De Temmerman G., Dimitrova M., Cavalier J., Adámek J., Seidl J., Jäger A.: ELM-induced arcing on tungsten fuzz in the COMPASS divertor region. Journal of Nuclear Materials 492 [August] (2017) 204-212. [ Abstract ] [ Link ]
[International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI 2016/22./. Roma, 30.05.2016-03.06.2016]

Nespoli F., Labit B., Furno I., Horáček J., Tsui C.K., Boedo J. A., Maurizio R., Reimerdes H., Theiler C., Ricci P., Halpern F.D., Sheikh U., Verhaegh K., Pitts R.A., Militello F.: Understanding and suppressing the near Scrape-Off Layer in inboard-limited plasmas in TCV. Nuclear Fusion 57 [12] (2017) č. článku 126029. [ 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 ]

Adámek J., Seidl J., Komm M., Weinzettl V., Pánek R., Stöckel J., Hron M., Háček P., Imríšek M., Vondráček P., Horáček J., Devitre A.: Fast measurements of the electron temperature and parallel heat flux in ELMy H-mode on the COMPASS tokamak. Nuclear Fusion 57 [2] (2017) č. článku 022010. [ 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]

Adámek J., Seidl J., Horáček J., Komm M., Eich T., Pánek R., Cavalier J., Devitre A., Peterka M., Vondráček P., Stöckel J., Šesták D., Grover O., Bílková P., Böhm P., Varju J., Havránek A., Weinzettl V., Lovell J., Dimitrova M., Mitošinková K., Dejarnac R., Hron M.: Electron temperature and heat load measurements in the COMPASS divertor using the new system of probes. Nuclear Fusion 57 [11] (2017) č. článku 116017. [ 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 ]

Matějíček J., Weinzettl V., Macková A., Malinský P., Havránek V., Naydenkova D., Klevarová V., Petersson P., Gasior P., Hakola A., Rubel M., Fortuna E., Kolehmainen J., Tervakangas S.: Interaction of candidate plasma facing materials with tokamak plasma in COMPASS. Journal of Nuclear Materials 493 [September] (2017) 102-119. [ Abstract ] [ Link ]
[International Conference on Plasma-Facing Materials and Components for Fusion Applications/15./. Aix-en-Provence, 18.05.2015-22.05.2015]

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]

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]

Adámek J., Seidl J., Horáček J., Komm M., Eich T., Pánek R., Cavalier J., Devitre A., Peterka M., Vondráček P., Stöckel J., Šesták D., Grover O., Bílková P., Böhm P., Varju J., Havránek A., Weinzettl V., Lovell J., Dimitrova M., Mitošinková M., Dejarnac R., Hron M.: Electron temperature and heat load measurements in the COMPASS divertor using the new system of probes. Nuclear Fusion 57 [11] (2017) č. článku 116017. [ Abstract ] [ Link ]

Komm M., Cavalier J., Seidl J., Adámek J., Bílková P., Böhm P., Devitre A., Dimitrova M., Elmore S., Faitsch M., Háček P., Havlíček J., Imríšek M., Krbec J., Peterka M., Pánek R., Popov T., Tomeš M., Weinzettl V.: First detachment studies on COMPASS tokamak using nitrogen seeding. 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 P1.118. 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]

Čeřovský J., Farník M., Šos M., Svoboda J., Ficker O., Hetflejs M., Svihra P., Shkut M., Grover O., Veverka J., Svoboda V., Stöckel J., Adámek J., Dimitrova M.: Tokamak GOLEM for fusion education - chapter 8. 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 P1.107. 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]

Vondráček P., Adámek J., Cavalier J., Devitre A., Horáček J., Hron M., Pánek R., Peterka M., Seidl J.: Divertor heat load study in COMPASS using IR thermography and divertor probes. 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 P1.120. 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]

Vondráček P., Gauthier C., Ficker O., Hron M., Imríšek M., Pánek R.: Fast infrared thermography on the COMPASS tokamak. Fusion Engineering and Design 123 [November] (2017) 764-767. [ Abstract ] [ Link ]
[SOFT 2016: Symposium on Fusion Technology /29./. Prague, 05.09.2016-09.09.2016]

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 ]

Weinzettl V., Matějíček J., Ratynskaia S., Tolias P., De Angeli M., Riva G., Dimitrova M., Havlíček J., Adámek J., Seidl J., Tomeš M., Cavalier J., Imríšek M., Havránek A., Pánek R., Peterka M.: Dust remobilization experiments on the COMPASS tokamak. Fusion Engineering and Design 124 [November] (2017) 446-449. [ Abstract ] [ Link ]
[SOFT 2016: Symposium on Fusion Technology /29./. Prague, 05.09.2016-09.09.2016]

Dimitrova M., Popov Tsv.K., Adámek J., Kovačič J., Ivanova P., Hasan E., López-Bruna D., Seidl J., Vondráček P., Dejarnac R., Stöckel J., Imríšek M., Pánek R.: Plasma potential and electron temperature evaluated by ball-pen and Langmuir probes in the COMPASS tokamak. Plasma Physics and Controlled Fusion 59 [12] (2017) č. článku 125001. [ Abstract ] [ Link ]

Tsui C.K., Boedo J. A., Halpern F.D., Loizu J., Nespoli F., Horáček J., Labit B., Morales J., Reimerdes H., Ricci P., Theiler C., Coda S., Duval B. P., Furno I.: Poloidal Asymmetry in the Narrow Heat Flux Feature in the TCV Scrape-Off Layer. Physics of Plasmas 24 [6] (2017) č. článku 062508. [ Abstract ] [ Link ]

Horáček J., Pitts R.A., Adámek J., Arnoux G., Bak J.-G., Brezinsek S., Dimitrova M., Goldston R.J., Gunn J. P., Havlíček J., Hong S.-H., Janky F., LaBombard B., Marsen S., Maddaluno G., Nie L., Pericoli V., Popov Tsv., Pánek R., Rudakov D., Seidl J., Seo D.S., Shimada M., Silva C., Stangeby P.C., Viola B., Vondráček P., Wang H., Xu G.S., Xu Y.: Multi-machine scaling of the main SOL parallel heat flux width in tokamak limiter plasmas. Plasma Physics and Controlled Fusion 58 [7] (2016) 074005. [ Abstract ] [ Link ]

Adámek J., Müller H.W., Silva C., Schrittwieser R., Ionita C., Mehlmann F., Costea S., Horáček J., Kurzan B., Bílková P., Böhm P., Aftanas M., Vondráček P., Stöckel J., Pánek R., Fernandes H., Figueiredo H.: Profile measurements of the electron temperature on the ASDEX Upgrade, COMPASS, and ISTTOK tokamak using Thomson scattering, triple, and ball-pen probes. Review of Scientific Instruments 87 [4] (2016) 043510. [ Abstract ] [ Link ]

Seidl J., Hron M., Adámek J., Vondráček P., Horáček J., Hidalgo C., Melnikov A., Eliseev L., Markovič T., Stöckel J., Basu D., Háček P., Havlíček J., Imríšek M., Kovařík K., Weinzettl V., Pánek R.: Observation of geodesic acoustic mode-like oscillations on COMPASS. EPS 2015:42nd European Physical Society Conference on Plasma Physics. Vol. 39E. Mulhouse : European Physical Society, 2015, P4.103-P4.103. ISBN 2-914771-98-3. - (Europhysics Conference Abstracts. ECA. 39E). [ Abstract ]
[EPS Conference on Plasma Physics/42./. Lisabon (PT), 22.06.2015-26.06.2015]

Adámek J., Seidl J., Pánek R., Komm M., Vondráček P., Stöckel J.: Fast measurements of the electron temperature in divertor region of the COMPASS tokamak using ball-pen probe. EPS 2015:42nd European Physical Society Conference on Plasma Physics. Vol. 39E. Mulhouse : European Physical Society, 2015, P4.101-P4.101. ISBN 2-914771-98-3. - (Europhysics Conference Abstracts. ECA. 39E). [ Abstract ] [ Link ]
[EPS 2015 Conference on Plasma Physics/42./. Lisabon (PT), 22.06.2015-26.06.2015]

Markovič T., Seidl J., Melnikov A., Háček P., Havlíček J., Havránek A., Hron M., Hronová-Bilyková O., Imríšek M., Janky F., Kovařík K., Mikulín O., Pánek R., Papřok R., Pipek J., Vondráček P., Weinzettl V.: Alfvén-wave character oscillations in tokamak COMPASS plasma. EPS 2015:42nd European Physical Society Conference on Plasma Physics. Vol. 39E. Mulhouse: European Physical Society, 2015, č. článku P4.104. Europhysics Conference Abstracts, ECA, 39E. ISBN 2-914771-98-3. [ Abstract ]
[EPS 2015 Conference on Plasma Physics/42./. Lisbon (PT), 22.06.2015-26.06.2015]

Pánek R., Adámek J., Aftanas M., Bílková P., Böhm P., Brochard F., Cahyna P., Cavalier J., Dejarnac R., Dimitrova M., Grover O., Harrison J., Háček P., Havlíček J., Havránek A., Horáček J., Hron M., Imríšek M., Janky F., Kirk A., Komm M., Kovařík K., Krbec J., Kripner L., Markovič T., Mitošinková K., Mlynář J., Naydenkova D., Peterka M., Seidl J., Stöckel J., Štefániková E., Tomeš M., Urban J., Vondráček P., Varavin M., Varju J., Weinzettl V., Zajac J.: Status of the COMPASS tokamak and characterization of the first H-mode. Plasma Physics and Controlled Fusion 58 [1] (2015) 014015-014015. [ Abstract ] [ Link ]