Results 21 to 30 of about 2,547,829 (287)
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.
P. Helander
semanticscholar +4 more sources
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
doaj +1 more source
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
doaj +1 more source
Plasma Physics and Controlled Fusion, 2021 Accumulation of impurities in the core of the plasma is a potential problem for any fusion reactor, and is thought to be especially problematic for stellarators. We use the collisional transport code Sfincs to calculate, in a reactor stellarator scenario,
S. Buller, H. Smith, A. Mollén
semanticscholar +1 more source
The importance of the classical channel in the impurity transport of optimized stellarators [PDF]
, 2019 In toroidal magnetic confinement devices, such as tokamaks and stellarators, neoclassical transport is usually an order of magnitude larger than its classical counterpart.
Buller, S. +4 more
core +2 more sources
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
doaj +1 more source
Neoclassical Transport Including Collisional Nonlinearity
Physical Review Letters, 2011 In the standard δf theory of neoclassical transport, the zeroth-order (Maxwellian) solution is obtained analytically via the solution of a nonlinear equation. The first-order correction δf is subsequently computed as the solution of a linear, inhomogeneous equation that includes the linearized Fokker-Planck collision operator.
J, Candy, E A, Belli
openaire +3 more sources
How to calculate the neoclassical viscosity, diffusion, and current coefficients in general toroidal plasmas [PDF]
, 2002 A novel method to obtain the full neoclassical transport matrix for general toroidal plasmas by using the solution of the linearized drift kinetic equation with the pitch-angle-scattering collision operator is shown.
H. Sugama, Nakajima N., S. Nishimura
core +2 more sources
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 +6 more
doaj +1 more source
The effect of tangential drifts on neoclassical transport in stellarators close to omnigeneity [PDF]
, 2016 In general, the orbit-averaged radial magnetic drift of trapped particles in stellarators is non-zero due to the three-dimensional nature of the magnetic field.
I. Calvo +3 more
semanticscholar +1 more source