The authors thank Professors Bojiang Ding and Nong Xiang for helpful guidance, and the Max-Planck-Institut für Plasmaphysik for providing us the TORIC code. This work was supported by the National Natural Science Foundation of China under grant numbers 11675073, 11575239, 11475083, and 11605088. The authors acknowledge the support of Professor Guoqiang Li, his student Kai Li, and their diagnostic colleagues.
