Resonant magnetic perturbations and edge ergodization on the COMPASS tokamak

Journal Article · Mon Sep 15 00:00:00 EDT 2008 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X08090080· OSTI ID:21399973

Cahyna, P ^[1]; Becoulet, M; Panek, R ^[2]; Fuchs, V ^[1]; Nardon, E ^[2]; Krlin, L ^[1]

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1. Association EURATOM/IPP.CR, Institute of Plasma Physics AS CR v.v.i (Czech Republic)
2. CEA Cadarache, Association EURATOM-CEA (France)

Results of calculations of resonant magnetic perturbation spectra on the COMPASS tokamak are presented. Spectra of the perturbations are calculated from the vacuum field of the perturbation coils. Ergodization is then estimated by applying the criterion of overlap of the resulting islands and verified by field line tracing. Results show that for the chosen configuration of perturbation coils an ergodic layer appears in the pedestal region. The ability to form an ergodic layer is similar to the theoretical results for the ELM suppression experiment at DIII-D; thus, a comparable effect on ELMs can be expected.

• OSTI ID: 21399973
• Journal Information: Plasma Physics Reports, Vol. 34, Issue 9; Other Information: DOI: 10.1134/S1063780X08090080; Copyright (c) 2008 Pleiades Publishing, Ltd.; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPASS-D TOKAMAK
DISTURBANCES
DOUBLET-3 DEVICE
EDGE LOCALIZED MODES
SPECTRA
CLOSED PLASMA DEVICES
INSTABILITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES