Impact of a pulsed supersonic deuterium gas jet on the ELM behaviour in ASDEX Upgrade

P. T. Lang, J. Neuhauser, J. Bucalossi, A. Chankin, D. P. Coster, R. Drube, R. Dux, G. Haas, L. D. Horton, S. Kálvin, G. Kocsis, M. Maraschek, V. Mertens, V. Rohde, V. Rozhansky, R. Schneider, I. Senichenkov, I. Veselova, E. Wolfrum

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The possibility for pacing of type-I edge localized modes (ELMs) in H-mode plasmas by intermittent gas injection was investigated in ASDEX Upgrade as a possible alternative to, and in comparison with, ELM control by pellets. A Laval nozzle type molecular deuterium injector was used, delivering 1.7 ms long jets with up to about 1020D per pulse at a supersonic flow velocity of 2.2 km s-1. With a repetition rate of 2 Hz and a fast rise time of ≈25 νs, comparable to typical ELM rise times, the injector seemed to be well-suited for single ELM trigger tests. When applied to H-mode discharges with a moderate type-I ELM frequency of 40-60 Hz, no prompt (

Original languageEnglish
Pages (from-to)1495-1516
Number of pages22
JournalPlasma Physics and Controlled Fusion
Volume47
Issue number9
DOIs
Publication statusPublished - Sep 1 2005

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gas jets
Supersonic flow
Deuterium
Flow velocity
deuterium
Nozzles
Plasmas
Gases
injectors
gas injection
supersonic flow
pellets
nozzles
repetition
flow velocity
actuators
pulses

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

Lang, P. T., Neuhauser, J., Bucalossi, J., Chankin, A., Coster, D. P., Drube, R., ... Wolfrum, E. (2005). Impact of a pulsed supersonic deuterium gas jet on the ELM behaviour in ASDEX Upgrade. Plasma Physics and Controlled Fusion, 47(9), 1495-1516. https://doi.org/10.1088/0741-3335/47/9/009

Impact of a pulsed supersonic deuterium gas jet on the ELM behaviour in ASDEX Upgrade. / Lang, P. T.; Neuhauser, J.; Bucalossi, J.; Chankin, A.; Coster, D. P.; Drube, R.; Dux, R.; Haas, G.; Horton, L. D.; Kálvin, S.; Kocsis, G.; Maraschek, M.; Mertens, V.; Rohde, V.; Rozhansky, V.; Schneider, R.; Senichenkov, I.; Veselova, I.; Wolfrum, E.

In: Plasma Physics and Controlled Fusion, Vol. 47, No. 9, 01.09.2005, p. 1495-1516.

Research output: Contribution to journalArticle

Lang, PT, Neuhauser, J, Bucalossi, J, Chankin, A, Coster, DP, Drube, R, Dux, R, Haas, G, Horton, LD, Kálvin, S, Kocsis, G, Maraschek, M, Mertens, V, Rohde, V, Rozhansky, V, Schneider, R, Senichenkov, I, Veselova, I & Wolfrum, E 2005, 'Impact of a pulsed supersonic deuterium gas jet on the ELM behaviour in ASDEX Upgrade', Plasma Physics and Controlled Fusion, vol. 47, no. 9, pp. 1495-1516. https://doi.org/10.1088/0741-3335/47/9/009
Lang, P. T. ; Neuhauser, J. ; Bucalossi, J. ; Chankin, A. ; Coster, D. P. ; Drube, R. ; Dux, R. ; Haas, G. ; Horton, L. D. ; Kálvin, S. ; Kocsis, G. ; Maraschek, M. ; Mertens, V. ; Rohde, V. ; Rozhansky, V. ; Schneider, R. ; Senichenkov, I. ; Veselova, I. ; Wolfrum, E. / Impact of a pulsed supersonic deuterium gas jet on the ELM behaviour in ASDEX Upgrade. In: Plasma Physics and Controlled Fusion. 2005 ; Vol. 47, No. 9. pp. 1495-1516.
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AU - Coster, D. P.

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