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Quasilinear theory of energetic particles interaction with toroidicity-induced Alfvén eigenmodes

Grant number: 14/03289-4
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): June 02, 2014
Effective date (End): June 01, 2015
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Ricardo Magnus Osório Galvão
Grantee:Vinícius Njaim Duarte
Supervisor abroad: Nikolai Gorelenkov
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Local de pesquisa : Princeton University, United States  
Associated to the scholarship:12/22830-2 - Geodesic acoustic modes and Alfvén continuum in plasma columns with rotation, BP.DR

Abstract

Energetic particles (EPs) are used in fusion grade plasma experiments as a source of heat to overcome energy losses. It turns out however that they play a major role on instability excitations of magnetohydrodynamic modes. EPs can interact resonantly with these modes, causing particle and heat losses that degrade the confinement. We propose to study the interaction of EPs and toroidicity-induced Alfvén eigenmodes (TAEs) using a two-dimensional line-broadened quasilinear approach, which captures the interaction in both regimes of isolated and overlapping modes. Initially, analytical works will be performed and then, the numerical implementation on NOVA code is intended. (AU)

Articles published in Agência FAPESP about the scholarship:
Model predicts scenarios for energy generation using nuclear fusion 

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DUARTE, V. N.; GORELENKOV, N. N.; SCHNELLER, M.; FREDRICKSON, E. D.; PEDESTA, M.; BERK, H. L. Study of the likelihood of Alfvenic mode bifurcation in NSTX and predictions for ITER baseline scenarios. NUCLEAR FUSION, v. 58, n. 8 AUG 2018. Web of Science Citations: 1.
GORELENKOV, N. N.; DUARTE, V. N.; PODESTA, M.; BERK, H. L. Resonance broadened quasi-linear (RBQ) model for fast ion distribution relaxation due to Alfvenic eigenmodes. NUCLEAR FUSION, v. 58, n. 8 AUG 2018. Web of Science Citations: 10.
MENG, G.; GORELENKOV, N. N.; DUARTE, V. N.; BERK, H. L.; WHITE, R. B.; WANG, X. G. Resonance frequency broadening of wave-particle interaction in tokamaks due to Alfvenic eigenmode. NUCLEAR FUSION, v. 58, n. 8 AUG 2018. Web of Science Citations: 7.
WOODS, B. J. Q.; DUARTE, V. N.; DE-GAL, A. J.; GORELENKOV, N. N.; VANN, R. G. L. Stochastic effects on phase-space holes and clumps in kinetic systems near marginal stability. NUCLEAR FUSION, v. 58, n. 8 AUG 2018. Web of Science Citations: 2.
DUARTE, V. N.; BERK, H. L.; GORELENKOV, N. N.; HEIDBRINK, W. W.; KRAMER, G. J.; NAZIKIAN, R.; PACE, D. C.; PODESTA, M.; VAN ZEELAND, M. A. Theory and observation of the onset of nonlinear structures due to eigenmode destabilization by fast ions in tokamaks. Physics of Plasmas, v. 24, n. 12 DEC 2017. Web of Science Citations: 12.
DUARTE, V. N.; BERK, H. L.; GORELENKOV, N. N.; HEIDBRINK, W. W.; KRAMER, G. J.; NAZIKIAN, R.; PACE, D. C.; PODESTA, M.; TOBIAS, B. J.; VAN ZEELAND, M. A. Prediction of nonlinear evolution character of energetic-particle-driven instabilities. NUCLEAR FUSION, v. 57, n. 5 MAY 2017. Web of Science Citations: 18.

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