19th European Fusion Theory Conference

Session

ORAL SESSION

11 Oct 2021, 15:50

Virtual in Consorzio RFX

34. Computing island width sensitivity in stellarators using an adjoint method

Alessandro Geraldini

11/10/2021, 15:50

4. Optimization of magnetic confinement devices and 3D magnetic field effects

Oral

Minimising the presence and size of magnetic islands in the core of stellarators is necessary to retain the advantageous confinement properties of nested flux surfaces. Therefore, efficient optimisation schemes to reduce island size in stellarator configurations are desirable. However, a configuration with small islands may not be good enough: it may be sensitive to the exact positions of the...

73. A Spectral Framework for Solving the Nonlinear Boltzmann Equation

George Wilkie (PPPL, USA)

11/10/2021, 16:10

9. Computational plasma physics

Invited

Direct numerical solution of the nonlinear Boltzmann transport equation remains elusive nearly 150 years after its discovery. Appropriate approximations continue to serve as the foundation of aerodynamics and plasma physics. However, some important problems in fusion don’t lend themselves to such approximations, such as runaway electron avalanche and regimes of dense neutral populations in...