Speaker
Antoine Baillod
(EPFL)
Description
The sensitivity of 3D magnetohydrodynamical equilibria to the toroidal current profile is of paramount importance for stellarator optimization and operation. In fact, magnetic field-line chaos can emerge depending on the plasma pressure and currents, thereby strongly affecting particle confinement. The Stepped-Pressure Equilibrium Code (Hudson et al., Phys. Plasmas, vol 19 (11), 2012) can be used to compute partially reconnected equilibria with coexisting magnetic surfaces, magnetic islands and chaos. The code has been recently extended to allow toroidal current prescription. A study of the toroidal current effect on magnetic topology is presented in a simplified stellarator configuration.
Author
Antoine Baillod
(EPFL)
Co-authors
Dr
Joaquim Loizu
(École polytechnique fédérale de Lausanne, Swiss Plasma Center)
Dr
Jonathan Graves
(École polytechnique fédérale de Lausanne, Swiss Plasma Center)
Dr
Wilfred Anthony Cooper
(Retired from the École polytechnique fédérale de Lausanne, Swiss Plasma Center)
