From the 2 of 3 linked papers with an AI index.
4 papers · 1 filter
On the transition to large fluxes and access to second stability in gyrokinetic simulations of electromagnetic turbulence in STEP
Daniel Kennedy, Yujia Zhang, Toby Adkins +6
The paper investigates why large heat fluxes appear in gyrokinetic simulations of electromagnetic turbulence in the STEP tokamak, identifying a critical q²βₑ threshold that trigger…
Destabilization of temperature-gradient-driven plasma turbulence by equilibrium flow shear
Haomin Sun, Plamen G. Ivanov, Justin Ball +2
The paper shows that an imposed equilibrium E×B flow shear can destroy self‑generated zonal flows in temperature‑gradient‑driven plasma turbulence, causing a sharp rise in transpor…
Reducing turbulent transport in tokamaks by combining intrinsic rotation and the low momentum diffusivity regime
Haomin Sun, Justin Ball, Stephan Brunner +8
Based on the analysis of a large number of high-fidelity nonlinear gyrokinetic simulations, we propose a novel strategy to improve confinement in spherical tokamak plasmas by combi…
Physics of the low momentum diffusivity regime in tokamaks and its experimental applicability
Haomin Sun, Justin Ball, Stephan Brunner +9
Strong plasma flow shear is beneficial for reducing turbulent transport. However, traditional methods of driving flow shear do not scale well to large devices such as f…