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The effect of lower...
The effect of lower hybrid waves on JET plasma rotation
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Nave, M. F. F. (author)
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Kirov, K. (author)
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Bernardo, J. (author)
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Brix, M. (author)
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Ferreira, J. (author)
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Giroud, C. (author)
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Hawkes, N. (author)
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- Hellsten, Torbjörn (author)
- KTH,Fusionsplasmafysik
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- Jonsson, Thomas, 1974- (author)
- KTH,Fusionsplasmafysik
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Mailloux, J. (author)
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Ongena, J. (author)
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Parra, F. (author)
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- Andersson Sundén, Erik (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Asp, E. (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Binda, Federico, 1987- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Cecconello, Marco (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Conroy, Sean (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Dzysiuk, Nataliia (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Ericsson, Göran (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Eriksson, Jacob, Dr, 1985- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Hellesen, Carl, 1980- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Hjalmarsson, Anders (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Possnert, Göran, 1951- (author)
- Uppsala universitet,Tillämpad kärnfysik,Tandemlaboratoriet
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- Sjöstrand, Henrik, 1978- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Skiba, Mateusz, 1985- (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Weiszflog, Matthias (author)
- Uppsala universitet,Tillämpad kärnfysik
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Zychor, I. (author)
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(creator_code:org_t)
- 2016-12-22
- 2017
- English.
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In: Nuclear Fusion. - : Institute of Physics Publishing (IOPP). - 0029-5515 .- 1741-4326. ; 57:3
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- This paper reports on observations of rotation in JET plasmas with lower hybrid current drive. Lower hybrid (LH) has a clear impact on rotation. The changes in core rotation can be either in the co- or counter-current directions. Experimental features that could determine the direction of rotation were investigated. Changes from co- to counter-rotation as the q-profile evolves from above unity to below unity suggests that magnetic shear could be important. However, LH can drive either co- or counter-rotation in discharges with similar magnetic shear and at the same plasma current. It is not clear if a slightly lower density is significant. A power scan at fixed density, shows a lower hybrid power threshold around 3 MW. For smaller LH powers, counter rotation increases with power, while for larger powers a trend towards co-rotation is found. The estimated counter-torque from the LH waves, would not explain the observed angular frequencies, neither would it explain the observation of co-rotation.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- current drive
- lower hybrid
- rotation
- tokamak
- Electric discharges
- Shear flow
- Tokamak devices
- Angular frequencies
- Current drives
- Direction of rotation
- Lower hybrid current drive
- Lower hybrid power
- Lower Hybrid waves
- Magnetoplasma
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Nave, M. F. F.
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Kirov, K.
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Bernardo, J.
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Brix, M.
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Ferreira, J.
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Giroud, C.
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show more...
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Hawkes, N.
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Hellsten, Torbjö ...
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Jonsson, Thomas, ...
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Mailloux, J.
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Ongena, J.
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Parra, F.
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Andersson Sundén ...
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Asp, E.
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Binda, Federico, ...
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Cecconello, Marc ...
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Conroy, Sean
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Dzysiuk, Natalii ...
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Ericsson, Göran
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Eriksson, Jacob, ...
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Hellesen, Carl, ...
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Hjalmarsson, And ...
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Possnert, Göran, ...
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Sjöstrand, Henri ...
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Skiba, Mateusz, ...
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Weiszflog, Matth ...
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Zychor, I.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Nuclear Fusion
- By the university
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Royal Institute of Technology
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Uppsala University