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JET intrinsic rotat...
JET intrinsic rotation studies in plasmas with a high normalized beta and varying toroidal field ripple
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Nave, M. F. F. (författare)
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Eriksson, L-G (författare)
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Giroud, C. (författare)
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visa fler...
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- Johnson, Thomas J. (författare)
- KTH,Fusionsplasmafysik
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Kirov, K. (författare)
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Mayoral, M-L (författare)
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Noterdaeme, J-M (författare)
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Ongena, J. (författare)
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Saibene, G. (författare)
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Sartori, R. (författare)
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Rimini, F. (författare)
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Tala, T. (författare)
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de Vries, P. (författare)
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Zastrow, K-D (författare)
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visa färre...
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(creator_code:org_t)
- 2012-06-22
- 2012
- Engelska.
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Ingår i: Plasma Physics and Controlled Fusion. - : IOP Publishing. - 0741-3335 .- 1361-6587. ; 54:7, s. 074006-
- Relaterad länk:
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http://pubman.mpdl.m...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Understanding the origin of rotation in ion cyclotron resonance frequency (ICRF) heated plasmas is important for predictions for burning plasmas sustained by alpha particles, being characterized by a large population of fast ions and no external momentum input. The angular velocity of the plasma column has been measured in JET H-mode plasmas with pure ICRF heating both for the standard low toroidal magnetic ripple configuration, of about similar to 0.08% and, for increased ripple values up to 1.5% (Nave et al 2010 Phys. Rev. Lett. 105 105005). These new JET rotation data were compared with the multi-machine scaling of Rice et al (2007 Nucl. Fusion 47 1618) for the Alfven-Mach number and with the scaling for the velocity change from L-mode into H-mode. The JET data do not fit well any of these scalings that were derived for plasmas that are co-rotating with respect to the plasma current. With the standard low ripple configuration, JET plasmas with large ICRF heating power and normalized beta, beta(N) approximate to 1.3, have a very small co-current rotation, with Alfven-Mach numbers significantly below those given by the rotation scaling of Rice et al (2007 Nucl. Fusion 47 1618). In some cases the plasmas are actually counter-rotating. No significant difference between the H-mode and L-mode rotation is observed. Typically the H-mode velocities near the edge are lower than those in L-modes. With ripple values larger than the standard JET value, between 1% and 1.5%, H-mode plasmas were obtained where both the edge and the core counter-rotated.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Aerodynamics
- Mach number
- Plasma simulation
- Rotation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Nave, M. F. F.
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Eriksson, L-G
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Giroud, C.
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Johnson, Thomas ...
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Kirov, K.
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Mayoral, M-L
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visa fler...
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Noterdaeme, J-M
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Ongena, J.
-
Saibene, G.
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Sartori, R.
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Rimini, F.
-
Tala, T.
-
de Vries, P.
-
Zastrow, K-D
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visa färre...
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