Monte Carlo orbit/full wave simulation of ion cyclotron resonance frequency wave damping on resonant ions in tokamaks

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.1935387· OSTI ID:20764393

Choi, M; Chan, V S; Pinsker, R I; Chiu, S C; Heidbrink, W W ^[1]

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1. General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

To investigate the experimentally observed interaction between beam ion species and fast Alfven wave (FW), a Monte Carlo code, ORBIT-RF [V. S. Chan, S. C. Chiu, and Y. A. Omelchenko, Phys. Plasmas 9, 501 (2002)], which solves the time-dependent Hamiltonian guiding center drift equations, has been upgraded to incorporate a steady-state neutral beam ion slowing-down distribution, a quasilinear high harmonic radio frequency diffusion operator and the wave fields from the two-dimensional ion cyclotron resonance frequency full wave code (TORIC4) [M. Brambilla, Plasma Phys. Controlled Fusion 41, 1 (1999)]. Comparison of ORBIT-RF simulation of power absorption with fixed amplitudes of FW fields from TORIC4 power absorption calculation, which assumes Maxwellian plasma distributions, attains agreement within a factor of two. The experimentally measured enhanced neutron rate is reproduced to within 30% from ORBIT-RF simulation using a single dominant toroidal and poloidal wave number.

• OSTI ID: 20764393
• Journal Information: Physics of Plasmas, Vol. 12, Issue 7; Other Information: DOI: 10.1063/1.1935387; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
ALFVEN WAVES
CHARGED-PARTICLE TRANSPORT
COMPARATIVE EVALUATIONS
DAMPING
DIFFUSION
HAMILTONIANS
ION CYCLOTRON-RESONANCE
IONS
MAGNETIC CONFINEMENT
MONTE CARLO METHOD
NEUTRONS
ORBITS
PLASMA
PLASMA BEAM INJECTION
PLASMA SIMULATION
RADIOWAVE RADIATION
RF SYSTEMS
SLOWING-DOWN
STEADY-STATE CONDITIONS
TIME DEPENDENCE
TOKAMAK DEVICES