Optimization of ICRH for core impurity control in JET-ILW

E. Lerche, M. Goniche, P. Jacquet, D. Van Eester, V. Bobkov, L. Colas, C. Giroud, I. Monakhov, F.J. Casson, F. Rimini, C. Angioni, M. Baruzzo, T. Blackman, S. Brezinsek, M. Brix, A. Czarnecka, K. Crombé, C. Challis, R. Dumont, J. ErikssonN. Fedorczak, M. Graham, J.P. Graves, G. Gorini, J. Hobirk, E. Joffrin, T. Johnson, Y. Kazakov, V. Kiptily, A. Krivska, M. Lennholm, P. Lomas, C. Maggi, P. Mantica, G. Mathews, M.-L. Mayoral, L. Meneses, J. Mlynar, P. Monier-Garbet, M.F. Nave, C. Noble, M. Nocente, I. Nunes, J. Ongena, G. Petravich, V. Petrzilka, T. Pütterich, M. Reich, M. Santala, E.R. Solano, A. Shaw, G. Sips, M. Stamp, M. Tardocchi, M. Tsalas, M. Valisa

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Abstract

Ion cyclotron resonance frequency (ICRF) heating has been an essential component in the development of high power H-mode scenarios in the Jet European Torus ITER-like wall (JET-ILW). The ICRF performance was improved by enhancing the antenna-plasma coupling with dedicated main chamber gas injection, including the preliminary minimization of RF-induced plasma-wall interactions, while the RF heating scenarios where optimized for core impurity screening in terms of the ion cyclotron resonance position and the minority hydrogen concentration. The impact of ICRF heating on core impurity content in a variety of 2.5 MA JET-ILW H-mode plasmas will be presented, and the steps that were taken for optimizing ICRF heating in these experiments will be reviewed.
Original languageEnglish
Article number036022
Pages (from-to)-
JournalNuclear Fusion
Volume56
Issue number3
DOIs
Publication statusPublished - 19 Feb 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Lerche, E., Goniche, M., Jacquet, P., Van Eester, D., Bobkov, V., Colas, L., Giroud, C., Monakhov, I., Casson, F. J., Rimini, F., Angioni, C., Baruzzo, M., Blackman, T., Brezinsek, S., Brix, M., Czarnecka, A., Crombé, K., Challis, C., Dumont, R., ... Valisa, M. (2016). Optimization of ICRH for core impurity control in JET-ILW. Nuclear Fusion, 56(3), -. [036022]. https://doi.org/10.1088/0029-5515/56/3/036022