1. Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator C-Mod Tokamak Plasmas
- Author
-
E. S. Marmar, Chris McDevitt, John Rice, Martin Greenwald, Amanda Hubbard, Patrick Diamond, Yusuke Kosuga, T.S. Hahm, Matthew Reinke, Y. Podpaly, J. W. Hughes, D.G. Whyte, Özgür D. Gürcan, Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics ,Tokamak ,Condensed matter physics ,General Physics and Astronomy ,Magnetic confinement fusion ,Plasma ,Edge (geometry) ,Rotation ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,Temperature gradient ,Alcator C-Mod ,Physics::Plasma Physics ,law ,[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] ,0103 physical sciences ,Atomic physics ,010306 general physics ,Scaling - Abstract
International audience; 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 ∇T, but completely different edge ∇n, it may be concluded that the drive of the intrinsic rotation is the edge ∇T rather than ∇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.
- Published
- 2011
- Full Text
- View/download PDF