Results 1 to 10 of about 903 (221)

Enhancement of neoclassical impurity density up/down asymmetry and Pfirsch–Schlüter transport due to the plasma elongation in the tokamak plasmas

Nuclear Fusion, 2023
The standard neoclassical theory of the impurity transport in tokamak plasma is improved by including the plasma elongation effect. The neoclassical up/down asymmetry of the impurity density is largely enhanced by the plasma elongation and is under ...
Chengkang Pan
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First-principles based plasma profile predictions for optimized stellarators

Nuclear Fusion, 2023
In the present Letter, first-of-its-kind computer simulations predicting plasma profiles for modern optimized stellarators—while self-consistently retaining neoclassical transport, turbulent transport with 3D effects, and external physical sources—are ...
A. Bañón Navarro, A. Di Siena, J.L. Velasco, F. Wilms, G. Merlo, T. Windisch, L.L. LoDestro, J.B. Parker, F. Jenko   +8 more
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Performance comparison between the ITER- and DEMO-like plasmas using CRONOS simulations [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2019
This work investigates plasma performance and fusion power production of the ITER- and DEMO-like plasmas using the integrated predictive modelling code CRONOS. These plasmas are simulated in the presence of an edge transport barrier (ETB).
Boonyarit Chatthong, Jiraporn Promping
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Kinetic neoclassical calculations of impurity radiation profiles

Nuclear Materials and Energy, 2017
Modifications of the drift-kinetic transport code XGC0 to include the transport, ionization, and recombination of individual charge states, as well as the associated radiation, are described.
D.P. Stotler, D.J. Battaglia, R. Hager, K. Kim, T. Koskela, G. Park, M.L. Reinke   +6 more
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Effects of bootstrap current on magnetic configuration in Chinese first quasi-axisymmetric stellarator

Nuclear Fusion, 2023
Neoclassical properties in quasi-axisymmetric (QA) stellarators are analogous to these in tokamaks. Consequently, a substantial bootstrap current could significantly modify the MHD equilibrium properties of a QA stellarator, which is an important ...
Haifeng Liu, Jian Zhang, Yuhong Xu, Akihiro Shimizu, Wilfred Anthony Cooper, Shoichi Okamura, Mitsutaka Isobe, Xianqu Wang, Jie Huang, Jun Cheng, Hai Liu, Xin Zhang, Changjian Tang   +12 more
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Energy transport analysis of NSTX plasmas with the TGLF turbulent and NEO neoclassical transport models

Nuclear Fusion, 2023
This work presents a study of plasma transport at low aspect ratio on the National Spherical Torus Experiment tokamak, where the turbulent and neoclassical energy fluxes calculated by the quasilinear Trapped Gyro Landau Fluid (TGLF) model and the multi ...
G. Avdeeva, K.E. Thome, S.P. Smith, D.J. Battaglia, C.F. Clauser, W. Guttenfelder, S.M. Kaye, J. McClenaghan, O. Meneghini, T. Odstrcil, G. Staebler   +10 more
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Prevention of core particle depletion in stellarators by turbulence

Physical Review Research, 2023
In reactor-relevant plasmas, neoclassical transport drives an outward particle flux in the core of large stellarators and predicts strongly hollow density profiles. However, this theoretical prediction is contradicted by experiments.
H. Thienpondt, J. M. García-Regaña, I. Calvo, J. A. Alonso, J. L. Velasco, A. González-Jerez, M. Barnes, K. Brunner, O. Ford, G. Fuchert, J. Knauer, E. Pasch, L. Vanó   +12 more
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Locality effects on bifurcation paradigm of L-H transition in tokamak plasmas [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2015
The locality effects on bifurcation paradigm of L-H transition phenomenon in magnetic confinement plasmas are investigated. One dimensional thermal transport equation with both neoclassical and anomalous transports effects included is considered, where
Boonyarit Chatthong, Thawatchai Onjun
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Preliminary Result of Neoclassical Impurity Transport Affected by ICRH with a 4-D Fokker-Planck Code [PDF]

EPJ Web of Conferences
To understand the role of ion cyclotron resonance heating (ICRH) in mitigating tungsten accumulation, we evaluate the impact of ICRH-induced poloidal asymmetries on neoclassical impurity transport using a newly developed 4-D Fokker–Planck code (FP4D ...
Jeong Yunho, Lee Hyeonjun, Bertelli Nicola, Yoon Eisung, Lee Jungpyo   +4 more
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Neoclassical toroidal plasma viscosity in bounce-transit and drift resonance regimes in tokamaks

Nuclear Fusion, 2023
Neoclassical toroidal plasma viscosity in the bounce-transit and drift resonance regimes is calculated using a version of the drift kinetic equation that encompasses the physics of the nonlinear trapping and quasilinear plateau regimes in tokamaks. It is
K.C. Shaing, M. Garcia-Munoz, E. Viezzer
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