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Mode conversion heating of JET plasmas with multiple mode conversion layers

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Abstract
Mode conversion heating has become one of the standard tools to do transport analysis and is often used in rotation experiments (see e.g. [1, 2]). It relies on the mode conversion, at the ion-ion hybrid (IIH) resonance, of the fast wave (FW) launched by standard RF antennas, to shorter wavelength waves that are efficiently damped on electrons. The interference effect described by Fuchs et al. [3] allows to significantly enhance the mode conversion and thereby the overall RF heating efficiency when the machine and plasma parameters are chosen such that an integer number of FW wavelengths can be folded in between the high field side (HFS) FW cutoff and the IIH layer. This effect was already experimentally identified in (3He)-D plasmas [4] and was recently tested in (3He)-H JET plasmas. In the latter case, commonly referred to as an ‘inverted scenario’, the ion-ion hybrid layer is positioned between the antenna on the low field side (LFS) and the ion-cyclotron layer of the minority 3He ions while in standard – e.g. (3He)-D - scenarios the ion-cyclotron layer is in between the IIH layer and the LFS. As shown in the past [5], the (3He)-H scenarios require much lower 3He concentrations, X[3He], to reach the mode-conversion heating regime and their RF wave behavior critically depends on the plasma composition.

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MLA
Van Eester, D, E Lerche, T Johnson, et al. “Mode Conversion Heating of JET Plasmas with Multiple Mode Conversion Layers.” Europhysics Conference Abstracts. Vol. 34A. Mulhouse, France: European Physical Society (EPS), 2010. Print.
APA
Van Eester, D, Lerche, E., Johnson, T., Hellsten, T., Ongena, J., Mayoral, M.-L., Frigione, D., et al. (2010). Mode conversion heating of JET plasmas with multiple mode conversion layers. EUROPHYSICS CONFERENCE ABSTRACTS (Vol. 34A). Presented at the 37th EPS conference on Plasma Physics, Mulhouse, France: European Physical Society (EPS).
Chicago author-date
Van Eester, D, E Lerche, T Johnson, T Hellsten, J Ongena, M-L Mayoral, D Frigione, et al. 2010. “Mode Conversion Heating of JET Plasmas with Multiple Mode Conversion Layers.” In Europhysics Conference Abstracts. Vol. 34A. Mulhouse, France: European Physical Society (EPS).
Chicago author-date (all authors)
Van Eester, D, E Lerche, T Johnson, T Hellsten, J Ongena, M-L Mayoral, D Frigione, C Sozzi, G Calabro, M Lennholm, P Beaumont, T Blackman, D Brennan, A Brett, M Cecconello, I Coffey, A Coyne, Kristel Crombé, A Czarnecka, R Felton, M Gatu Johnson, C Giroud, G Gorini, C Hellesen, P Jacquet, Y Kazakov, V Kiptily, S Knipe, A Krasilnikov, Y Lin, M Maslov, I Monakhov, C Noble, M Nocente, L Pangioni, I Proverbio, M Stamp, W Studholme, M Tardocchi, TW Versloot, V Vdovin, A Whitehurst, E Woolridge, and V Zoita. 2010. “Mode Conversion Heating of JET Plasmas with Multiple Mode Conversion Layers.” In Europhysics Conference Abstracts. Vol. 34A. Mulhouse, France: European Physical Society (EPS).
Vancouver
1.
Van Eester D, Lerche E, Johnson T, Hellsten T, Ongena J, Mayoral M-L, et al. Mode conversion heating of JET plasmas with multiple mode conversion layers. EUROPHYSICS CONFERENCE ABSTRACTS. Mulhouse, France: European Physical Society (EPS); 2010.
IEEE
[1]
D. Van Eester et al., “Mode conversion heating of JET plasmas with multiple mode conversion layers,” in EUROPHYSICS CONFERENCE ABSTRACTS, Dublin, Ireland, 2010, vol. 34A.
@inproceedings{1247949,
  abstract     = {Mode conversion heating has become one of the standard tools to do transport analysis and is often used in rotation experiments (see e.g. [1, 2]). It relies on the mode conversion, at the ion-ion hybrid (IIH) resonance, of the fast wave (FW) launched by standard RF antennas, to shorter wavelength waves that are efficiently damped on electrons. The interference effect described by Fuchs et al. [3] allows to significantly enhance the mode conversion and thereby the overall RF heating efficiency when the machine and plasma parameters are chosen such that an integer number of FW wavelengths can be folded in between the high field side (HFS) FW cutoff and the IIH layer. This effect was already experimentally identified in (3He)-D plasmas [4] and was recently tested in (3He)-H JET plasmas. In the latter case, commonly referred to as an ‘inverted scenario’, the ion-ion hybrid layer is positioned between the antenna on the low field side (LFS) and the ion-cyclotron layer of the minority 3He ions while in standard – e.g. (3He)-D - scenarios the ion-cyclotron layer is in between the IIH layer and the LFS. As shown in the past [5], the (3He)-H scenarios require much lower 3He concentrations, X[3He], to reach the mode-conversion heating regime and their RF wave behavior critically depends on the plasma composition.},
  articleno    = {P5.163},
  author       = {Van Eester, D and Lerche, E and Johnson, T and Hellsten, T and Ongena, J and Mayoral, M-L and Frigione, D and Sozzi, C and Calabro, G and Lennholm, M and Beaumont, P and Blackman, T and Brennan, D and Brett, A and Cecconello, M and Coffey, I and Coyne, A and Crombé, Kristel and Czarnecka, A and Felton, R and Gatu Johnson, M and Giroud, C and Gorini, G and Hellesen, C and Jacquet, P and Kazakov, Y and Kiptily, V and Knipe, S and Krasilnikov, A and Lin, Y and Maslov, M and Monakhov, I and Noble, C and Nocente, M and Pangioni, L and Proverbio, I and Stamp, M and Studholme, W and Tardocchi, M and Versloot, TW and Vdovin, V and Whitehurst, A and Woolridge, E and Zoita, V},
  booktitle    = {EUROPHYSICS CONFERENCE ABSTRACTS},
  isbn         = {9782914771627},
  issn         = {0378-2271},
  language     = {eng},
  location     = {Dublin, Ireland},
  pages        = {4},
  publisher    = {European Physical Society (EPS)},
  title        = {Mode conversion heating of JET plasmas with multiple mode conversion layers},
  url          = {http://www.iop.org/Jet/fulltext/EFDC100602.pdf},
  volume       = {34A},
  year         = {2010},
}