Pellet-plasma interaction studies at ASDEX upgrade

G. Kocsis, É Belonohy, K. Gál, S. Kálvin, P. T. Lang, W. Schneider, G. Veres

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pellet-plasma interaction is investigated both experimentally at ASDEX Upgrade tokamak and theoretically based on the obtained experimental data. For ELM triggering pellets were injected from the high field side at the ASDEX Upgrade tokamak into type-I ELMy H-mode plasma with a frequency much smaller than the natural ELM frequency. Every pellet triggered an ELM. In order to gain information about the triggering mechanism the delay between the time the pellet crossing the separatrix and the ELM onset was investigated by injecting pellets with two different velocities (240m/s, 600m/s). It was found that the delay time is in the order of 100μs and is shorter at higher pellet velocity. Pellets trigger ELMs when only a minor part the mass is ablated in the plasma: about 2 1018 (vp = 240m/s) and 8 1017 (v p = 600m/s) particles are deposited along the pellet path until the ELM onset is detected.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages191-194
Number of pages4
Volume812
DOIs
Publication statusPublished - Jan 15 2006
EventPLASMA 2005: International Conference PLASMA-2005 on Research and Application of Plasmas; 3rd German-Polish Conference on Plasma Diagnostics for Fusion Applications; 5th French-Polish Seminar on Thermal Plasma in Space and Laboratory - Opole-Turawa, Poland
Duration: Sep 6 2005Sep 9 2005

Other

OtherPLASMA 2005: International Conference PLASMA-2005 on Research and Application of Plasmas; 3rd German-Polish Conference on Plasma Diagnostics for Fusion Applications; 5th French-Polish Seminar on Thermal Plasma in Space and Laboratory
CountryPoland
CityOpole-Turawa
Period9/6/059/9/05

Fingerprint

plasma interactions
pellets
resonant frequencies
time lag
actuators

Keywords

  • ELM triggering
  • Pellet
  • Pellet ablation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kocsis, G., Belonohy, É., Gál, K., Kálvin, S., Lang, P. T., Schneider, W., & Veres, G. (2006). Pellet-plasma interaction studies at ASDEX upgrade. In AIP Conference Proceedings (Vol. 812, pp. 191-194) https://doi.org/10.1063/1.2168820

Pellet-plasma interaction studies at ASDEX upgrade. / Kocsis, G.; Belonohy, É; Gál, K.; Kálvin, S.; Lang, P. T.; Schneider, W.; Veres, G.

AIP Conference Proceedings. Vol. 812 2006. p. 191-194.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kocsis, G, Belonohy, É, Gál, K, Kálvin, S, Lang, PT, Schneider, W & Veres, G 2006, Pellet-plasma interaction studies at ASDEX upgrade. in AIP Conference Proceedings. vol. 812, pp. 191-194, PLASMA 2005: International Conference PLASMA-2005 on Research and Application of Plasmas; 3rd German-Polish Conference on Plasma Diagnostics for Fusion Applications; 5th French-Polish Seminar on Thermal Plasma in Space and Laboratory, Opole-Turawa, Poland, 9/6/05. https://doi.org/10.1063/1.2168820
Kocsis G, Belonohy É, Gál K, Kálvin S, Lang PT, Schneider W et al. Pellet-plasma interaction studies at ASDEX upgrade. In AIP Conference Proceedings. Vol. 812. 2006. p. 191-194 https://doi.org/10.1063/1.2168820
Kocsis, G. ; Belonohy, É ; Gál, K. ; Kálvin, S. ; Lang, P. T. ; Schneider, W. ; Veres, G. / Pellet-plasma interaction studies at ASDEX upgrade. AIP Conference Proceedings. Vol. 812 2006. pp. 191-194
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