Advanced search
1 file | 418.84 KB

Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX upgrade

(2014) AIP Conference Proceedings. 1580. p.239-242
Author
Organization
Abstract
ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CO1.31) (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay.
Keywords
PLASMAS

Downloads

  • Pub Tsujii AIPConfProc 1580 239.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 418.84 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Tsujii, N, R D’Inca, Jean-Marie Noterdaeme, R Bilato, V Bobkov, M Brambilla, D Van Eester, RW Harvey, EF Jaeger, and EA Lerche. 2014. “Effect of Collisional Heat Transfer in ICRF Power Modulation Experiment on ASDEX Upgrade.” In AIP Conference Proceedings, 1580:239–242.
APA
Tsujii, N., D’Inca, R., Noterdaeme, J.-M., Bilato, R., Bobkov, V., Brambilla, M., Van Eester, D., et al. (2014). Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX upgrade. AIP Conference Proceedings (Vol. 1580, pp. 239–242). Presented at the 20th Topical Conference on Radio Frequency Power in Plasmas.
Vancouver
1.
Tsujii N, D’Inca R, Noterdaeme J-M, Bilato R, Bobkov V, Brambilla M, et al. Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX upgrade. AIP Conference Proceedings. 2014. p. 239–42.
MLA
Tsujii, N et al. “Effect of Collisional Heat Transfer in ICRF Power Modulation Experiment on ASDEX Upgrade.” AIP Conference Proceedings. Vol. 1580. 2014. 239–242. Print.
@inproceedings{5969289,
  abstract     = {ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CO1.31) (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay.},
  author       = {Tsujii, N and D'Inca, R and Noterdaeme, Jean-Marie and Bilato, R and Bobkov, V and Brambilla, M and Van Eester, D and Harvey, RW and Jaeger, EF and Lerche, EA},
  booktitle    = {AIP Conference Proceedings},
  isbn         = {9780735412101},
  issn         = {0094-243X},
  keywords     = {PLASMAS},
  language     = {eng},
  location     = {Sorrento, Italy},
  pages        = {239--242},
  title        = {Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX upgrade},
  url          = {http://dx.doi.org/10.1063/1.4864532},
  volume       = {1580},
  year         = {2014},
}

Altmetric
View in Altmetric
Web of Science
Times cited: