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Title: Fast Ion Effects on Fishbones and n=1 Kinks in JET Simulated by a Non-perturbative NOVA-KN Code

Abstract

New global non-perturbative hybrid code, NOVA-KN, and simulations of resonant type modes in JET [Joint European Torus] plasmas driven by energetic H-minority ions are presented. The NOVA-KN code employs the ideal-MHD description for the background plasma and treats non-perturbatively the fast particle kinetic response, which includes the fast ion finite orbit width (FOW) effect. In particular, the n = 1 fishbone mode, which is in precession drift resonance with fast ions, is studied. The NOVA-KN code is applied to model an n = 1 (f = 50-80kHz) MHD activity observed recently in JET low density plasma discharges with high fast ion (H-minority) energy content generated during the ion cyclotron resonance heating (ICRH). This n = 1 MHD activity is interpreted as the instability of the n = 1 precession drift frequency fishbone modes.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
836153
Report Number(s):
PPPL-4021
TRN: US0500506
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 28 Oct 2004
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ICR HEATING; INSTABILITY; KINETICS; PLASMA; PRECESSION; RESONANCE; ALPHA PARTICLES; FISHBONE INSTABILITY; KINK INSTABILITY

Citation Formats

Gorelenkov, N N, Cheng, C Z, Kiptily, V G, Mantsinen, M J, Sharapov, S E, and the JET-EFDA Contributors. Fast Ion Effects on Fishbones and n=1 Kinks in JET Simulated by a Non-perturbative NOVA-KN Code. United States: N. p., 2004. Web. doi:10.2172/836153.
Gorelenkov, N N, Cheng, C Z, Kiptily, V G, Mantsinen, M J, Sharapov, S E, & the JET-EFDA Contributors. Fast Ion Effects on Fishbones and n=1 Kinks in JET Simulated by a Non-perturbative NOVA-KN Code. United States. doi:10.2172/836153.
Gorelenkov, N N, Cheng, C Z, Kiptily, V G, Mantsinen, M J, Sharapov, S E, and the JET-EFDA Contributors. Thu . "Fast Ion Effects on Fishbones and n=1 Kinks in JET Simulated by a Non-perturbative NOVA-KN Code". United States. doi:10.2172/836153. https://www.osti.gov/servlets/purl/836153.
@article{osti_836153,
title = {Fast Ion Effects on Fishbones and n=1 Kinks in JET Simulated by a Non-perturbative NOVA-KN Code},
author = {Gorelenkov, N N and Cheng, C Z and Kiptily, V G and Mantsinen, M J and Sharapov, S E and the JET-EFDA Contributors},
abstractNote = {New global non-perturbative hybrid code, NOVA-KN, and simulations of resonant type modes in JET [Joint European Torus] plasmas driven by energetic H-minority ions are presented. The NOVA-KN code employs the ideal-MHD description for the background plasma and treats non-perturbatively the fast particle kinetic response, which includes the fast ion finite orbit width (FOW) effect. In particular, the n = 1 fishbone mode, which is in precession drift resonance with fast ions, is studied. The NOVA-KN code is applied to model an n = 1 (f = 50-80kHz) MHD activity observed recently in JET low density plasma discharges with high fast ion (H-minority) energy content generated during the ion cyclotron resonance heating (ICRH). This n = 1 MHD activity is interpreted as the instability of the n = 1 precession drift frequency fishbone modes.},
doi = {10.2172/836153},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {10}
}