Skip to main content
eScholarship
Open Access Publications from the University of California

Effects of magnetic shear on toroidal rotation in tokamak plasmas with lower hybrid current drive.

  • Author(s): Rice, JE
  • Podpaly, YA
  • Reinke, ML
  • Mumgaard, R
  • Scott, SD
  • Shiraiwa, S
  • Wallace, GM
  • Chouli, B
  • Fenzi-Bonizec, C
  • Nave, MFF
  • Diamond, PH
  • Gao, C
  • Granetz, RS
  • Hughes, JW
  • Parker, RR
  • Bonoli, PT
  • Delgado-Aparicio, L
  • Eriksson, L-G
  • Giroud, C
  • Greenwald, MJ
  • Hubbard, AE
  • Hutchinson, IH
  • Irby, JH
  • Kirov, K
  • Mailloux, J
  • Marmar, ES
  • Wolfe, SM
  • et al.
Abstract

Application of lower hybrid (LH) current drive in tokamak plasmas can induce both co- and countercurrent directed changes in toroidal rotation, depending on the core q profile. For discharges with q(0) <1, rotation increments in the countercurrent direction are observed. If the LH-driven current is sufficient to suppress sawteeth and increase q(0) above unity, the core toroidal rotation change is in the cocurrent direction. This change in sign of the rotation increment is consistent with a change in sign of the residual stress (the divergence of which constitutes an intrinsic torque that drives the flow) through its dependence on magnetic shear.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View