英国物理学会
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作者:S.A. Lazerson , the DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (2)IOP
摘要:The presence of toroidal variation in diagnostic measurements indicates that the two-dimensional (2D) symmetry of tokamak equilibria can be violated when resonant magnetic perturbations (RMPs) are applied to suppress edge localized modes. While tokamak control is still possible w...
作者:... G.R. McKee , P.B. Snyder , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (6)IOP
摘要:Periods of edge localized mode (ELM)-free H-mode with increased pedestal pressure and width were observed in the DIII-D tokamak when density fluctuations localized to the region near the separatrix were present. Injection of a powder of 45 µ m diameter lithium particles incr...
作者:... M.A. Van Zeeland , Y.B. Zhu , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)IOP
摘要:Experiments in the DIII-D tokamak show that many overlapping small-amplitude Alfvén eigenmodes (AEs) cause fast-ion transport to sharply increase above a critical threshold in beam power, leading to fast-ion density profile resilience and reduced fusion performance. The thre...
作者:... W.M. Solomon , Z. Yan , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)IOP
摘要:New experimental studies and modelling of the coherent edge harmonic oscillation (EHO), which regulates the conventional Quiescent H-mode (QH-mode) edge, validate the proposed hypothesis of edge rotational shear in destabilizing the low- n kink-peeling mode as the additional...
作者:... G.R. McKee , T.L. Rhodes , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (12)IOP
摘要:Experiments simulating the ITER baseline scenario on the DIII-D tokamak show that torque-free pure electron heating, when coupled to plasmas subject to a net co-current beam torque, affects density fluctuations at electron scales on a sub-confinement time scale, whereas fluctuati...
作者:... R. Sweeney , F.A. Volpe , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (3)IOP
摘要:The toroidal phase and rotation of otherwise locked magnetic islands of toroidal mode number n = 1 are controlled in the DIII-D tokamak by means of applied magnetic perturbations of n = 1. Pre-emptive perturbations were applied in feedforward to ‘catch’ the mode as it slowed...
作者:... E. Strait , F.A. Volpe , The DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (5)IOP
摘要:Locked modes are known to be one of the major causes of disruptions, but the physical mechanisms by which locking leads to disruptions are not well understood. Here we analyze the evolution of the temperature profile in the presence of multiple coexisting locked modes during...
作者:C.C. Petty , the DIII-D Team
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (11)IOP
摘要:DIII-D research is addressing critical challenges in preparation for ITER and the next generation of fusion devices through focusing on plasma physics fundamentals that underpin key fusion goals, understanding the interaction of disparate core and boundary plasma physics, an...
作者:... M.A. Van Zeeland , R. Nazikian , the DIII-D team
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (8)IOP
摘要:Injection of solid pellets is a key element in several aspects of the operation of a magnetic confinement plasma reactor for fusion applications, including plasma fueling, control and diagnosis. This letter reports observations demonstrating that pellet ablation can begin ou...
作者:the DIII-D TEAM , J.C. Hillesheim ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (9)IOP
摘要:Fusion performance in tokamaks hinges critically on the efficacy of the edge transport barrier (ETB) in suppressing energy losses. The new concept of ‘fingerprints’ is introduced to identify the instabilities that cause transport losses in the ETBs of many of today’s ex...

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