139 citations · 312 across the 9 of their papers we have counts for
8 papers · 1 filter
Transport Barriers in Magnetized Plasmas -- General Theory with Dynamical Constraints
Mike Kotschenreuther, Xing Liu, Swadesh M. Mahajan +2
A fundamental dynamical constraint -- that fluctuation induced charge-weighted particle flux must vanish -- can prevent instabilities from accessing the free energy in the strong g…
Modeling electron temperature profiles in the pedestal with simple formulas for ETG transport
D. R. Hatch, M. T. Kotschenreuther, P. -Y. Li +4
This paper reports on the refinement (building on Ref.~\cite{hatch_22}) and application of simple formulas for electron heat transport from electron temperature gradient (ETG) driv…
Reduced models for ETG transport in the pedestal
David R. Hatch, Craig Michoski, Dongyang Kuang +10
This paper reports on the development of reduced models for electron temperature gradient (ETG) driven transport in the pedestal. Model development is enabled by a set of 61 nonlin…
Gyrokinetic analysis and simulation of pedestals, to identify the culprits for energy losses using fingerprints
M. Kotschenreuther, X. Liu, D. R. Hatch +14
Fusion performance in tokamaks hinges critically on the efficacy of the Edge Transport Barrier (ETB) at suppressing energy losses. The new concept of fingerprints is introduced to…
Direct Gyrokinetic Comparison of Pedestal Transport in JET with Carbon and ITER-Like Walls
D. R. Hatch, M. Kotschenreuther, S. M. Mahajan +8
This paper compares the gyrokinetic instabilities and transport in two representative JET pedestals, one (pulse 78697) from the JET configuration with a carbon wall (C) and another…
Flow Shear Suppression of Pedestal Turbulence--A First Principles Theoretical Framework
D. R. Hatch, R. D. Hazeltine, M. K. Kotschenreuther +1
A combined analytic and computational gyrokinetic approach is developed to address the question of the scaling of pedestal turbulent transport with arbitrary levels of …
The unified ballooning theory with weak up-down asymmetric mode structure and the numerical studies
T. Xie, H. Qin, Y. Z. Zhang +1
A unified ballooning theory, constructed on the basis of two special theories [Y. Z. Zhang, S. M. Mahajan, X. D. Zhang, Phys. Fluids B4, 2729 (1992); Y. Z. Zhang, T. Xie, Nucl. Fus…
An Exploration of Advanced X-Divertors on ITER
Brent Covele, Prashant Valanju, Mike Kotschenreuther +1
It is found that the X-Divertor (XD) configuration [1-3] can be made with the conventional PF coil set on ITER[4], where all PF coils are outside the TF coils. Desirable configurat…