Halo current rotation scaling in post-disruption plasmas

Nuclear Fushion

article

A.R. Saperstein¹  J.P. Levesque¹  M.E. Mauel¹  G.A. Navratil¹ 

[1] Department of Applied Physics and Applied Mathematics, Columbia University

关键词: tokamak;    HBT-EP;    scaling law;    disruption;    halo current;    rotation;   

DOI  :  10.1088/1741-4326/ac4186

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

Halo current (HC) rotation during disruptions can be potentially dangerous if resonant with the structures surrounding a tokamak plasma. We propose a drift-frequency-based scaling law for the rotation frequency of the asymmetric component of the HC as a function of toroidal field strength and plasma minor radius ( f _rot ∝ 1/ B _T a ²). This scaling law is consistent with results reported for many tokamaks and is motivated by the faster HC rotation observed in the HBT-EP tokamak. Projection of the rotation frequency to ITER and SPARC parameters suggest the asymmetric HC rotation will be on the order of 10 Hz and 60 Hz, respectively.

【 授权许可】

Unknown