2004
DOI: 10.1063/1.1652731
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Full wave simulations of fast wave mode conversion and lower hybrid wave propagation in tokamaks

Abstract: Fast Wave (FW) studies of mode conversion (MC) processes at the ion-ion hybrid layer in toroidal plasmas must capture the disparate scales of the FW and mode converted ion Bernstein (IBW) and ion cyclotron waves (ICW). Correct modeling of the MC layer requires resolving wavelengths on the order of k ⊥ ρi ∼ 1 which leads to a scaling of the maximum poloidal mode number, Mmax, proportional to 1/ρ * (ρ * ≡ ρi/L). The computational resources needed a scale with the number of radial (Nr), poloidal (N θ ), and toroi… Show more

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Cited by 83 publications
(84 citation statements)
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“…We stress that modelling mode conversion to short wave modes in two dimensions is a very challenging problem, the adequate treatment of which has recently started by appealing to massively parallel computers [37]. The CYRANO results presented here are accordingly preliminary for the MC regime, because our present computer capability only allows a partial numerical resolution of the short mode converted waves in the poloidal direction for a large tokamak such as JET.…”
Section: Numerical Simulationsmentioning
confidence: 99%
“…We stress that modelling mode conversion to short wave modes in two dimensions is a very challenging problem, the adequate treatment of which has recently started by appealing to massively parallel computers [37]. The CYRANO results presented here are accordingly preliminary for the MC regime, because our present computer capability only allows a partial numerical resolution of the short mode converted waves in the poloidal direction for a large tokamak such as JET.…”
Section: Numerical Simulationsmentioning
confidence: 99%
“…The codes include AORSA [13,14], CYRANO [15,16], EVE [17], PSTELION [18], TASK/WM [19], and TORIC (version 6) [20,21], (version 5 is used for the PTRANSP-generated inputs for the simulations). A summary of approximations and numerical methods is given in Table II Parameters needed for quantitative comparisons of the benchmarking results include the locations of resonance layers, zero-dimensional results such as the heating partitions, one-dimensional results such as heating profiles and electromagnetic fields along chords.…”
Section: Full-wave Solversmentioning
confidence: 99%
“…The action-angle formalism is discussed in [33][34][35][36][37]. Comments on how to solve the relevant set of equations -with a focus on accounting for the realistic geometry -are given in [38][39][40][41][42][43][44][45][46][47][48][49][50][51] while the role of decorrelation is the key subject in [52][53][54][55].…”
Section: A Comment On the List Of Referencesmentioning
confidence: 99%
“…SOME ASPECTS OF NONUNIFORM PLASMA MODELING III.A. Mode Coupling [38][39][40][41][42][43][44][45][46][47][48][49][50][51] Before commenting on the particular issues brought about by the impact of the plasma inhomogeneities on the orbits of the particles and the challenges this leads to when trying to write down a rigorous expression for the dielectric response, a simplified problem is looked at first, namely that of the wave propagation in a tokamak in absence of a poloidal field i.e. where the guiding center orbits are assumed to simply being given by ϕ(t) = ϕ(t o ) + v // (t − t o ).…”
Section: Iig a Note On Selfconsistencymentioning
confidence: 99%