Improved heat and particle flux mitigation in high core confinement, baffled, alternative divertor configurations in the TCV tokamak

Nuclear Fushion

article

Harshita Raj¹  C. Theiler²  A. Thornton³  O. Février²  S. Gorno²  F. Bagnato²  P. Blanchard²  C. Colandrea²  H. de Oliveira²  B.P. Duval²  B. Labit²  A. Perek⁴  H. Reimerdes²  U. Sheikh²  M. Vallar²  B. Vincent² 

[1] Institute for Plasma Research;Swiss Plasma Center;CCFE, Culham Science Centre;DIFFER-Dutch Institute for Fundamental Energy Research

关键词: tokamak;    advanced divertor configurations;    H-mode;    high confinement;    baffles;    Langmuir probes;    divertor heat load mitigation;   

DOI  :  10.1088/1741-4326/ac94e5

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

Nitrogen seeded detachment has been achieved in the tokamak a configuration variable (TCV) in alternative divertor configurations (ADCs), namely X-divertor andX -point target, with and without baffles in H-mode plasmas with high core confinement. Both ADCs show a remarkable reduction in the inter-ELM particle and heat fluxes to the target compared to the standard divertor configuration. 95%–98% of the inter-ELM peak heat flux to the target is mitigated as a synergetic effect of ADCs, baffling, and nitrogen seeded detachment. The effect of divertor geometry and baffles on core-divertor compatibility is investigated in detail. The power balance in these experiments is also investigated to explore the physics behind the observed reduction in heat fluxes in the ADCs.

【 授权许可】

Unknown