Integrated simulation analysis of the HL-2M high-parameter hybrid scenario

Nuclear Fushion

article

Y. Zhong¹  G. Yang¹  X. Gong¹  P. Yu¹  Q. Tan¹  Q. Huang¹  P. Zheng¹  L. Yin¹  T. Yang¹  Z. Gao¹  Z. Wang²  M. Xu² 

[1] University of South China;Southwestern Institute of Physics

关键词: OMFIT;    impurity concentration;    pedestal density;    HL-2M;   

DOI  :  10.1088/1741-4326/acb36f

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

On the basis of the OMFIT integrated simulation platform and the parameters of the HL-2M device, a hybrid scenario with a typical safety factorqprofile is simulated using the joint injection method of neutral beam and electron cyclotron wave with a normalized toroidal beta ( β _N) of 2.39. At the same time, by analyzing the effect of impurity concentration ( Z _eff) and pedestal density ( n _e,ped) on confinement, a higher parameters hybrid scenario is obtained, withβ _N reaching 3.118. The research results indicate that the turbulent stabilization effect caused byZ _eff gradually decreases from strong to weak with the increase ofZ _eff, whereas the radiation power loss increases linearly asZ _eff increases. Consequently, there exists an optimalZ _eff value for optimal confinement. In addition, it is found that the optimalZ _eff value decreases with the increase ofn _e,ped. The research results are crucial for the HL-2M device to accomplish the 1 MA advanced scenario discharge target, and they serve as a reference for future impurity seeding experiments.

【 授权许可】

Unknown