Since 18 of December 2019 conferences.iaea.org uses Nucleus credentials. Visit our help pages for information on how to Register and Sign-in using Nucleus.
Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

Theoretical and Simulation Studies on the Wave and Particle Dynamics Associated with Alfvén Eigenmodes in Tokamak Plasmas

Oct 16, 2014, 2:00 PM
4h 45m
Green 8-9 (Hotel Park Inn Pribaltiyskaya)

Green 8-9

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation
Poster Poster 6

Speaker

Prof. ZHIWEI Ma (IFTS,ZHEJIANG)

Description

In this work, we present analytical and simulation results of the wave and energetic particle (EP) dynamics associated with Alfvén Eigenmodes (AE) in tokamak fusion plasmas. It is found that (i) both the nonlinear saturation and the wave-frequency chirping dynamics of toroidal Alfvén eigenmodes (TAE) depend crucially on the EP velocity anisotropy, and exhibits features of wave-EP phase/resonance locking; (ii) the finite frequency geodesic acoustic modes (GAMs) could be spontaneously excited by TAEs and could, consequently, leading to effective saturation of TAEs; and (iii) both kinetic effects associated with short perpendicular wavelengths and current gradient term play crucial roles in the existence of downward frequency sweeping reverse shear Alfvén eigenmodes (RSAEs) in consistence with HL-2A experimental observations.
Paper Number TH/P6-14
Country or International Organisation China

Primary author

Prof. ZHIWEI Ma (IFTS,ZHEJIANG)

Co-authors

Fulvio Zonca (Associazione EURATOM-ENEA sulla Fusione) Dr Guoyong Fu (Princeton Plasma Physics Laboratory) Prof. LIU CHEN (IFTS,ZHEJIANG UNVIERSITY) Dr LM YU (East China Univ. of Science and Technology) Dr Wei Chen (Southwestern Institute of Physics, P.O. Box 432 Chengdu 610041, China) Dr XM ZHANG (East China Univ. of Science and Technology) Prof. ZM SHENG (IFTS,ZHEJIANG UNIVERSITY) Dr Zhiyong Qiu (Zhejiang University)

Presentation materials

There are no materials yet.