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

Journal Article · · Nuclear Fusion
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [3];  [4]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  4. XCEL Engineering Inc., Oak Ridge, TN (United States)
+ Show Author Affiliations
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.
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

References (32)

Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions
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dataset January 2017
Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions dataset January 2017
Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions dataset January 2017
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Cited By (8)

Full-wave simulations of ICRF heating regimes in toroidal plasmas with non-Maxwellian distribution functions dataset January 2017
Integrated Tokamak modeling: When physics informs engineering and research planning journal May 2018
Similarity of the coupled equations for RF waves in a tokamak journal January 2019
Survey of heating and current drive for K-DEMO journal January 2018
Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT journal June 2019
Effects of fast ions produced by ICRF heating on the pressure at EAST journal November 2019
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 dataset January 2017

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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Waves