Dimensionless Parameter Scaling of Intrinsic Torque in C-Mod Enhanced Confinement Plasmas
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Author(s)
Rice, John E.
Cao, N.M.
Tala, T.
Chrystal, C.
Greenwald, M.J.
Hughes, Jerry W.
Marmar, E.S.
Reinke, M.L.
Rodriguez Fernandez, Pablo
Salmi, A.
Date Issued
September 2020
Journal
Nuclear Fusion
Publisher
IOP
Abstract
A dimensionless parameter dependence study of intrinsic torque has been performed on a database of H- and I-mode plasmas from the Alcator C-Mod tokamak. The torque was determined by comparing intrinsic angular momentum density profiles just before and just after L-H and L-I transitions. The intrinsic torque has been found to scale as beta_N^1.5 rho_*^-1.0 nu_$^0.1, with the parameter ranges 0.3 < beta_N <1.5, 0.004 < rho_* < 0.011 and 0.04 < nu_* < 0.9. Comparison with results from other tokamaks suggests that the intrinsic torque should be normalized by some measure of the device size.
Description
Submitted for publication in Nuclear Fusion
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1741-4326/abcb26
