72 citations · 87 across the 6 of their papers we have counts for
6 papers
X point effects on the ideal MHD modes in tokamaks in the description of dual-poloidal-region safety factor
Linjin Zheng, M. T. Kotschenreuther, F. L. Waelbroeck +1
The flux coordinates with dual-region safety factor (q) in the poloidal direction are developed in this work. The X-point effects on the ideal MHD modes in tokamaks are then analyz…
Prospects of negative triangularity tokamak for advanced steady-state confinement of fusion plasmas
Linjin Zheng, M. T. Kotschenreuther, F. L. Waelbroeck +4
The steady-state confinement, beta limit, and divertor heat load are among the most concerned issues for toroidal confinement of fusion plasmas. In this work, we show that the nega…
ATEQ: Adaptive Toroidal Equilibrium code
Linjin Zheng, M. T. Kotschenreuther, F. L. Waelbroeck +1
A radially adaptive numerical scheme is developed to solve the Grad-Shafranov equation for axisymmetric magnetohydrodynamic equilibrium. A decomposition with independent solutions…
Gyrokinetic Simulations Compared with Magnetic Fluctuations Diagnosed with a Faraday-Effect Radial Interferometer-Polarimeter in the DIII-D pedestal
M. T. Curie, D. R. Hatch, M. Halfmoon +6
Experimental data on electromagnetic fluctuations in DIII-D, made available by the Faraday-effect Radial Interferometer-Polarimeter (RIP) diagnostic, is examined in comparison with…
The physical basis of the zero charge flux constraint in gyro kinetics as local momentum conservation, by analogy to the classical Coulomb collisional case
M. Kotschenreuther
Gyrokinetic turbulence is subject to the constraint that the turbulent charge flux vanishes. This is interpreted, in detail, as arising from momentum conservation at the fluctuatio…
Magnetic Geometry and Physics of Advanced Divertors: The X-Divertor and the Snowflake
Mike Kotschenreuther, Prashant Valanju, Brent Covele +1
Advanced divertors are magnetic geometries where a second X-point is added in the divertor region to address the serious challenges of burning plasma power exhaust. Invoking physic…