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作者:M. Maslov , A. Boboc , M. Brix ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:This work describes the behaviour of the global energy and particle confinement on JET observed in a massive database of H-mode plasmas covering almost the whole lifetime of JET operations, both with the carbon and metal wall. The analysis is focused on type I ELMy H-modes i...
作者:Z.M. Wu , X.B. Zhou , J.W. Liu ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:Ultrafine-grained W-5wt.% Cr-5wt.% Y (W5C5Y alloy was prepared by the spark plasma sintering method. Investigation of the microstructure showed that the grain growth was suppressed by the addition of Cr and Y. They not only enhance the density of sintered materials, but also...
作者:C. Chrystal , B.A. Grierson , S.R. Haskey ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:Determining the toroidal rotation for future tokamaks like ITER is a challenging and important problem. By combining empirical scalings for the intrinsic rotation at the top of the pedestal with the expected neutral beam torque and modeling of momentum transport, the toroida...
作者:S.A. Barengolts , D. Hwangbo , S. Kajita ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (4)
摘要:This paper presents the results of a study of the mass-to-charge composition of the plasma of a W-fuzz-cathode arc at a discharge duration of 250 µs. It has been found that the mean charge of tungsten ions in the arc plasma varies from +1 to +3 as the fuzz structure is destr...
作者:J. Varela , S. Ohdachi , K.Y. Watanabe ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (4)
摘要:The aim of the present study is to perform a theoretical analysis of different strategies to stabilize energetic-ion-driven resistive interchange mode (EIC in Large Helical Device (LHD plasma. We use a reduced MHD for the thermal plasma coupled with a gyrofluid model for the ener...
作者:Konsta Särkimäki
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:We present an analysis scheme called loss-map analysis that quantitatively connects the fast ion transport in 3D magnetic field to the underlying transport mechanisms. The loss-map analysis is generally applicable, but here its use is demonstrated by applying it to study alpha pa...
作者:Debing Zhang , Yingfeng Xu , Zongliang Dai ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (4)
摘要:The calculation of the velocity moment in the gyrokinetic theory and its application in the study of zonal flows in a tokamak plasma are investigated. Based on the scalar invariance property, the expression for the particle velocity in the gyrocenter coordinates is obtained, and ...
作者:H. Anand , R.A. Pitts , P.C. De Vries ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:A control-oriented approach, based on real-time equilibrium reconstruction, has been developed to monitor power fluxes to ITER plasma-facing components (PFC. The model describes the deposited heat flux as a poloidal flux function with two main input parameters: the power exhauste...
作者:Jim-Felix Lobsien , Michael Drevlak , Frank Jenko ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (4)
摘要:In this paper we follow up on the results from our previous publication (Lobsien et al 2018 Nucl. Fusion 58 106013, where it was found that stellarator coil design optimization can be substantially improved by using a stochastic optimisation approach. In that paper performance wa...
作者:S. Ding , A.M. Garofalo , M. Knolker ...
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (3)
摘要:Analysis of recent super H-mode experiments on DIII-D shows that high rotation, not high pedestal, plays the essential role in achieving very high confinement . Very high confinement is reached early on in the H-mode phase of these discharges, when the pedestal is still very low,...

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