139 citations · 186 across the 6 of their papers we have counts for
6 papers
Gyrokinetic Simulations of a Low Recycling Scrape-off Layer without a Lithium Target
Akash Shukla, Jonathan Roeltgen, Michael Kotschenreuther +7
Low-recycling regimes are appealing because they entail a high edge temperature and low edge density which are good for core confinement. However, due to considerably enhanced heat…
Direct Comparison of Gyrokinetic and Fluid Scrape-Off Layer Simulations
A. Shukla, J. Roeltgen, M. Kotschenreuther +7
Typically, fluid simulations are used for tokamak divertor design. However, fluid models are only valid if the SOL is highly collisional, an assumption that is valid in many presen…
The effect of separatrix density and PFC material on H-mode confinement in the ITPA global H-mode database
M. Kotschenreuther, X. Liu, D. R. Hatch +1
Recent data, added to the ITPA global H-mode database [1] for ASDEX-U [2] and JET-ILW, reveals that the separatrix density has a correlation with the H20 factor (Confinem…
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…
Vacuum Solution for Solov'ev's Equilibrium Configuration in Tokamaks
Tao Xu, Richard Fitzpatrick, Francois L. Waelbroeck
In this work, we have revisited the Solov'ev analytical solution for a tokamak equilibrium. We point out that the vacuum solution in the Solov'ev formulation is inapplicable, since…