Results 1 to 10 of about 810 (164)
Plasma and Fusion Research, 2008 In helical systems, neoclassical transport is one of the important issues in addition to anomalous transport, because of a strong temperature dependency of heat conductivity and an important role in the radial electric field determination. Therefore, the development of a reliable tool for the neoclassical transport analysis is necessary for the ...
S Murakami, Shun-Ichi Oikawa
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Gyrokinetic particle simulation of neoclassical transport [PDF]
Physics of Plasmas, 1995 A time varying weighting (δf ) scheme for gyrokinetic particle simulation is applied to a steady-state, multispecies simulation of neoclassical transport. Accurate collision operators conserving momentum and energy are developed and implemented. Simulation results using these operators are found to agree very well with neoclassical theory. For example,
Z Lin, W M Tang, W W Lee
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Neoclassical transport in stellarators [PDF]
The Physics of Fluids, 1987 The stellarator neoclassical transport caused by particles trapped in local helical wells is calculated in the low-collisionality regime using a systematic expansion. The behavior of electron transport is found to be the same over a wide range of energies but the behavior of ion transport for low-energy ions is found to be different than that for high ...
Ho, Darwin D.-M., Kulsrud, Russell M.
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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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Rotation and neoclassical ripple transport in ITER [PDF]
Nuclear Fusion, 2017 Neoclassical transport in the presence of non-axisymmetric magnetic fields causes a toroidal torque known as neoclassical toroidal viscosity (NTV). The toroidal symmetry of ITER will be broken by the finite number of toroidal field coils and by test blanket modules (TBMs).
E.J. Paul +5 more
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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 +8 more
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On neoclassical impurity transport in stellarator geometry [PDF]
Plasma Physics and Controlled Fusion, 2013 The impurity dynamics in stellarators has become an issue of moderate concern due to the inherent tendency of the impurities to accumulate in the core when the neoclassical ambipolar radial electric field points radially inwards (ion root regime).
Garcia-Regana, J. +5 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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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 +12 more
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Classical and Neoclassical Transport in Tokamaks [PDF]
Fusion Science and Technology, 2012 These lecture notes provide a short overview of classical and neoclassical transport in tokamaks.
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