Optimization of quasi-symmetric stellarators with self-consistent bootstrap current and energetic particle confinement

  title={Optimization of quasi-symmetric stellarators with self-consistent bootstrap current and energetic particle confinement},
  author={Matt Landreman and S. Buller and Michael Drevlak},
  journal={Physics of Plasmas},
Quasi-symmetry can greatly improve the confinement of energetic particles and thermal plasma in a stellarator. The magnetic field of a quasi-symmetric stellarator at high plasma pressure is significantly affected by the bootstrap current, but the computational cost of accurate stellarator bootstrap calculations has precluded use inside optimization. Here, a new efficient method is demonstrated for optimization of quasi-symmetric stellarator configurations such that the bootstrap current profile… 
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