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Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles
Nuclear Fusion ( IF 3.3 ) Pub Date : 2020-09-22 , DOI: 10.1088/1741-4326/abaf33 J. Huang 1 , A.M. Garofalo 2 , J.P. Qian 1 , X.Z. Gong 1 , S.Y. Ding 1 , J. Varela 3 , J.L. Chen 1 , W.F. Guo 1 , K. Li 1 , M.Q. Wu 4 , C.K. Pan 1 , Q. Ren 1 , B. Zhang 1 , L.L. Lao 2 , C.T. Holcomb 5 , J. McClenaghan 2 , D. Weisberg 2 , V. Chan 2 , A. Hyatt 2 , W.H. Hu 1 , G.Q. Li 1 , J. Ferron 2 , G. McKee 6 , R.I. Pinsker 2 , T. Rhodes 7 , G.M. Staebler 2 , D. Spong 8 , Z. Yan 5
Nuclear Fusion ( IF 3.3 ) Pub Date : 2020-09-22 , DOI: 10.1088/1741-4326/abaf33 J. Huang 1 , A.M. Garofalo 2 , J.P. Qian 1 , X.Z. Gong 1 , S.Y. Ding 1 , J. Varela 3 , J.L. Chen 1 , W.F. Guo 1 , K. Li 1 , M.Q. Wu 4 , C.K. Pan 1 , Q. Ren 1 , B. Zhang 1 , L.L. Lao 2 , C.T. Holcomb 5 , J. McClenaghan 2 , D. Weisberg 2 , V. Chan 2 , A. Hyatt 2 , W.H. Hu 1 , G.Q. Li 1 , J. Ferron 2 , G. McKee 6 , R.I. Pinsker 2 , T. Rhodes 7 , G.M. Staebler 2 , D. Spong 8 , Z. Yan 5
Affiliation
To prepare for steady-state operation of future fusion reactors (e.g. the International Thermonuclear Experimental Reactor and China Fusion Engineering Test Reactor (CFETR)), experiments on DIII-D have extended the high poloidal beta ( β P ) scenario to reactor-relevant edge safety factor q 95 ∼ 6.0, while maintaining a large-radius internal transport barrier (ITB) using negative magnetic shear. Excellent energy confinement quality ( H 98y2 > 1.5) is sustained at high normalized beta ( β N ∼ 3.5). This high-performance ITB state with Greenwald density fraction near 100% and q min ≥ 3 is achieved with toroidal plasma rotation V tor ∼ 0 at ρ ≥ 0.6. This is a key result for reactors expected to have low V tor . At high β P (≥1.9), large Shafranov shift can stabilize turbulence leading to a high confinement state with a low pedestal and...
更新日期：2020-09-23
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