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Updated: Oct 10, 2025

A 100 KW Class Applied-field Magnetoplasmadynamic Thruster
Published on: December 22, 2018
Impact of Magnetic Field Configuration on Heat Transport in Stellarators and Heliotrons
Felix Warmer1, K Tanaka2,3, P Xanthopoulos1
1Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany.
Abstract:
We assess the magnetic field configuration in modern fusion devices by comparing experiments with the same heating power, between a stellarator and a heliotron. The key role of turbulence is evident in the optimized stellarator, while neoclassical processes largely determine the transport in the heliotron device. Gyrokinetic simulations elucidate the underlying mechanisms promoting stronger ion scale turbulence in the stellarator. Similar plasma performances in these experiments suggests that neoclassical and turbulent transport should both be optimized in next step reactor designs.
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