Free boundary ideal magnetohydrodynamic stability of three-dimensional stellarators
- 1. Association Euratom-Confederation Suisse, Ecole Polytechnique Federale de Lausanne, Lausanne (Switzerland). Centre de Recherches en Physique des Plasmas
- 2. Association Euratom-Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.)
- 3. Ecole Polytechnique Federale, Lausanne (Switzerland)
- 4. Lawrence Livermore National Lab., Livermore, CA (USA). National Energy Research Supercomputer Center
Description
The 3-D ideal MHD stability code TERPSICHORE is used to investigate the global external stability properties of the ATF device and the Wendelstein 7-X device. The stability of 3-D ATF equilibria with zero net toroidal plasma current and bell shaped pressure profiles shows that (a) external modes alter the internal stability properties, (b) the coupling between the main toroidal Fourier components of the mode and their sidebands is destabilizing, (c) the stabilizing outward shift of the magnetic axis is confirmed, (d) the quadrupole field deteriorates stability by annihilating the vacuum magnetic well and (d) global stability is insensitive to pressure profile effects. The ideal MHD stability of a sequence of configurations with zero net toroidal current that varies from a conventional L=2 stellarator to the proposed Wendelstein 7-X device shows that the mode structures are essentially internal and that this proposed configuration is stable to global modes at β=4.5% with a safe margin. (author). 10 refs, 11 figs
Additional details
Publishing Information
- Publisher
- IAEA.
- Imprint Place
- Vienna (Austria)
- ISBN
- 92-0-130191-X
- Imprint Title
- Plasma physics and controlled nuclear fusion research 1990. V. 2
- Imprint Pagination
- 809 p.
- Journal Issue
- Suppl. 1991
- Journal Series
- Nucl. Fusion.
- Journal Page Range
- p. 793-807.
Conference
- Title
- 13. international conference on plasma physics and controlled nuclear fusion research.
- Dates
- 1-6 Oct 1990.
- Place
- Washington, DC (USA).
INIS
- Country of Publication
- Austria
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 22082123
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Quality check status
- Yes
- Descriptors DEI
- ATF TORSATRON; BETA RATIO; COMPUTERIZED SIMULATION; MEDIUM-BETA PLASMA; MHD EQUILIBRIUM; PLASMA MACROINSTABILITIES; PLASMA PRESSURE; PLASMA RADIAL PROFILES; QUADRUPOLES; THEORETICAL DATA; THREE-DIMENSIONAL CALCULATIONS; WENDELSTEIN-7 STELLARATOR;
- Descriptors DEC
- CLOSED PLASMA DEVICES; DATA; EQUILIBRIUM; INFORMATION; INSTABILITY; MULTIPOLES; NUMERICAL DATA; PLASMA; PLASMA INSTABILITY; SIMULATION; STELLARATORS; THERMONUCLEAR DEVICES; TORSATRON STELLARATORS;
Optional Information
- Lead record
- 52s21-0xq96
- Secondary number(s)
- IAEA-CN--53/C-IV-20.