Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator C-Mod Tokamak Plasmas

Journal Article · Fri May 27 04:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.215001· OSTI ID:21538374

Rice, J E; Hughes, J W; Podpaly, Y A; Reinke, M L; Greenwald, M J; Hubbard, A E; Marmar, E S; Whyte, D G ^[1]; Diamond, P H ^[2]; Kosuga, Y; McDevitt, C J ^[3]; Guercan, Oe D ^[4]; Hahm, T S ^[5]

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1. PSFC, MIT, Cambridge, Massachusetts 02139 (United States)
2. NFRI, Daejeon 305-333 (Korea, Republic of)
3. UCSD, San Diego, California 92093 (United States)
4. LPP Ecole Polytechnique, 91128, Palaiseau, CEDEX (France)
5. PPPL, Princeton, New Jersey 08543 (United States)

Intrinsic rotation has been observed in I-mode plasmas from the C-Mod tokamak, and is found to be similar to that in H mode, both in its edge origin and in the scaling with global pressure. Since both plasmas have similar edge {nabla}T, but completely different edge {nabla}n, it may be concluded that the drive of the intrinsic rotation is the edge {nabla}T rather than {nabla}P. Evidence suggests that the connection between gradients and rotation is the residual stress, and a scaling for the rotation from conversion of free energy to macroscopic flow is calculated.

• OSTI ID: 21538374
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALCATOR DEVICE
CLOSED PLASMA DEVICES
CONFINEMENT
ENERGY
FREE ENERGY
H-MODE PLASMA CONFINEMENT
MAGNETIC CONFINEMENT
MOTION
PHYSICAL PROPERTIES
PLASMA
PLASMA CONFINEMENT
RESIDUAL STRESSES
ROTATION
STRESSES
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES