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Quantitative comparison of experimental impurity transport with nonlinear gyrokinetic simulation in an Alcator C-Mod L-mode plasma
Nonlinear gyrokinetic simulations of impurity transport are compared to experimental impurity transport for the first time. The GYRO code (Candy and Waltz 2003 J. Comput. Phys. 186 545) was used to… Expand
Inter-machine comparison of intrinsic toroidal rotation in tokamaks
Parametric scalings of the intrinsic (spontaneous, with no external momentum input) toroidal rotation observed on a large number of tokamaks have been combined with an eye towards revealing the… Expand
X-ray imaging crystal spectroscopy for use in plasma transport research.
- M. Reinke, Y. Podpaly, +12 authors S. Wolfe
- Physics, Medicine
- The Review of scientific instruments
- 1 November 2012
This research describes advancements in the spectral analysis and error propagation techniques associated with x-ray imaging crystal spectroscopy (XICS) that have enabled this diagnostic to be used… Expand
Edge temperature gradient as intrinsic rotation drive in Alcator C-Mod tokamak plasmas.
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… Expand
Poloidal variation of high-Z impurity density due to hydrogen minority ion cyclotron resonance heating on Alcator C-Mod
In the Alcator C-Mod tokamak, strong, steady-state variations of molybdenum density within a flux surface are routinely observed in plasmas using hydrogen minority ion cyclotron resonant heating.… Expand
Vulcan: A steady-state tokamak for reactor-relevant plasma–material interaction science
Abstract An economically viable magnetic-confinement fusion reactor will require steady-state operation and high areal power density for sufficient energy output, and elevated wall/blanket… Expand
Spontaneous core toroidal rotation in Alcator C-Mod L-mode, H-mode and ITB plasmas
Spontaneous toroidal rotation, self-generated in the absence of an external momentum input, exhibits a rich phenomenology. In L-mode plasmas, the rotation varies in a complicated fashion with… Expand
ICRF Mode Conversion Flow Drive Experiments on Alcator C‐Mod
We have carried out a detailed study of the dependence of ICRF mode conversion flow drive (MCFD) on plasma and RF parameters. The flow drive efficiency is found to depend strongly on the 3He… Expand
Estimation of the ion toroidal rotation source due to momentum transfer from Lower Hybrid waves in Alcator C‐Mod
Significant ion toroidal rotation ( 50km/s) has been measured by X‐Ray spectroscopy for impurities in Alcator C‐Mod during lower hybrid (LH) RF power injection . We investigate the relation… Expand
The Ar(17+) Ly(alpha 2)/Ly(alpha 1) ratio in Alcator C-Mod tokamak plasmas
High-quality spectra of hydrogen-like Ar(17+) have been obtained from Alcator C-Mod tokamak plasmas using a spatially imaging high-resolution x-ray spectrometer system in an extensive study of the ...