Full-wave simulations of ICRF heating regimes in toroidal plasma with non-Maxwellian distribution functions

Bertelli, N.; Valeo, E. J.; Green, D. L.; Gorelenkova, M.; Phillips, C. K.; Podestà, M.; Lee, J. P.; Wright, J. C.; Jaeger, E. F.

doi:10.1088/1741-4326/aa66db

Full-wave simulations of ICRF heating regimes in toroidal plasma with non-Maxwellian distribution functions

Journal Article · Mon Apr 03 00:00:00 EDT 2017 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/aa66db· OSTI ID:1353395

Bertelli, N. ^[1]; Valeo, E. J. ^[1]; Green, D. L. ^[2]; Gorelenkova, M. ^[1]; Phillips, C. K. ^[1]; ^[1]; Lee, J. P. ^[3]; Wright, J. C. ^[3]; Jaeger, E. F. ^[4]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
XCEL Engineering Inc., Oak Ridge, TN (United States)

At the power levels required for significant heating and current drive in magnetically-confined toroidal plasma, modification of the particle distribution function from a Maxwellian shape is likely (Stix 1975 Nucl. Fusion 15 737), with consequent changes in wave propagation and in the location and amount of absorption. In order to study these effects computationally, both the finite-Larmor-radius and the high-harmonic fast wave (HHFW), versions of the full-wave, hot-plasma toroidal simulation code TORIC (Brambilla 1999 Plasma Phys. Control. Fusion 41 1 and Brambilla 2002 Plasma Phys. Control. Fusion 44 2423), have been extended to allow the prescription of arbitrary velocity distributions of the form f(v(parallel to), v(perpendicular to) , psi, theta). For hydrogen (H) minority heating of a deuterium (D) plasma with anisotropic Maxwellian H distributions, the fractional H absorption varies significantly with changes in parallel temperature but is essentially independent of perpendicular temperature. On the other hand, for HHFW regime with anisotropic Maxwellian fast ion distribution, the fractional beam ion absorption varies mainly with changes in the perpendicular temperature. The evaluation of the wave-field and power absorption, through the full wave solver, with the ion distribution function provided by either a Monte-Carlo particle and Fokker-Planck codes is also examined for Alcator C-Mod and NSTX plasmas. Non-Maxwellian effects generally tend to increase the absorption with respect to the equivalent Maxwellian distribution.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)

Grant/Contract Number:: FC02-01ER54648

OSTI ID:: 1353395

Alternate ID(s):: OSTI ID: 22925710

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 5 Vol. 57; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions Bertelli, N.; Valeo, E. J.; Green, D. L. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1367882	dataset	January 2017
Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions Bertelli, N.; Valeo, E.; Green, D. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1562085	dataset	January 2017
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Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions Bertelli, N.; Valeo, E. J.; Green, D. L. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States) https://doi.org/10.11578/1356364	dataset	January 2017
Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions Bertelli, N.; Valeo, E. J.; Green, D. L. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1367882	dataset	January 2017

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Absorption
Equations
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HHFW
ICRH
Minority heating
Nstx
Plasma
Tokamak
Tokamak plasmas
Waves

Full-wave simulations of ICRF heating regimes in toroidal plasma with non-Maxwellian distribution functions

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