Properties of a new quasi-axisymmetric configuration

Nuclear Fushion

article

S.A. Henneberg¹  M. Drevlak¹  C. Nührenberg¹  C.D. Beidler¹  Y. Turkin¹  J. Loizu²  P. Helander¹ 

[1] Max-Planck-Institut für Plasmaphysik;École Polytechnique Fédérale de Lausanne ,(EPFL), Swiss Plasma Center

关键词: stellarator optimization;    quasi-axisymmetry;    stellarator design study;   

DOI  :  10.1088/1741-4326/aaf604

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

A novel, compact, quasi-axisymmetric configuration is presented which exhibits low fast-particle losses and is stable to ideal magnetohydrodynamic (MHD) instabilities. The design has fast-particle loss rates below 8% for flux surfaces within the half-radius, and is shown to have a MHD stability limit of a normalized pressure of, where is volume averaged. The flux surfaces at various plasma betas and currents as calculated using the SPEC equilibrium code (Loizuet al2016Phys. Plasmas23112505) are presented. Neoclassical transport coefficients are shown to be similar to an equivalent tokamak, with a distinct banana regime at half-radius. An initial coil design study is presented to assess the feasibility of this configuration as a fusion-relevant experiment.

【 授权许可】

Unknown