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Simultaneous analysis of ion and electron heat transport by power modulation in JET
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Ryter, F., Angioni, C., Giroud, C., Peeters, A. G., Biewer, T., Bilato, R., Joffrin, E., Johnson, T., Leggate, H., Lerche, E., Madison, G., Mantica, P., Van Eester, D. and Voitsekhovitch, I.. (2011) Simultaneous analysis of ion and electron heat transport by power modulation in JET. Nuclear Fusion, Vol.51 (No.11). Article: 113016. ISSN 0029-5515
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Official URL: http://dx.doi.org/10.1088/0029-5515/51/11/113016
Abstract
Heating power modulation experiments using ion cyclotron resonance heating (ICRH) in the (3)He minority scheme have been performed in the JET tokamak to investigate heat transport properties. This RF scheme provides a dominant localized ion heating, but also some electron heating, and therefore both ion and electron heat channels were modulated. This allows us to carry out a simultaneous transport analysis of ion and electron heat transport channels, including transient transport phenomena. This also provides an experimental assessment of the ICRH heat sources of the (3)He scheme. The modulation approach, so far widely used for electron transport studies, has been validated for ion heat transport in these experiments and yields results on stiffness and threshold of the ion temperature gradient (ITG)-driven ion heat transport. The results for the electron channel demonstrate the importance of the ITG-driven, off-diagonal, contribution to electron heat transport in plasmas with significant ion heating.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Nuclear Fusion |
| Publisher: | Institute of Physics Publishing Ltd. |
| ISSN: | 0029-5515 |
| Date: | November 2011 |
| Volume: | Vol.51 |
| Number: | No.11 |
| Page Range: | Article: 113016 |
| Identification Number: | 10.1088/0029-5515/51/11/113016 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Euratom-IPP Association, European Fusion Development Agreement |
| URI: | http://wrap.warwick.ac.uk/id/eprint/40430 |
Data sourced from Thomson Reuters' Web of Knowledge
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