Time: 2017-10-20 13:00:00
Speaker: Zhichen FENG [IFTS-ZJU]
Place: RM 413, BLK 11
Abstract: Quasi-symmetry is a powerful concept for improving neoclassical transport of stellarators. Here we will introduce stellatator briefly, and report recent results of optimization of Quasi-Axisymmetric Stellarator (QAS) using STELLOPT code. A parameter scan of elongation for a 3 period QAS with A=6 aspect ratio shows the existence of good configurations with low neoclassical transport. Linear MHD stability optimization is performed for different beta case.