The CASTOR (complex Alfvén spectrum of toroidal plasmas) code computes the entire spectrum of normal-modes in resistive MHD for general tokamak configurations. The applied Galerkin method, in conjunction with a Fourier finite-element discretisation, leads to a large scale eigenvalue problem Ax = λBx
Resistive MHD studies of high β tokamak plasmas
✍ Scribed by V.E. Lynch; B.A. Carreras; H.R. Hicks; J.A. Holmes; L. Garcia
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 1018 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0010-4655
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✦ Synopsis
Numerical calculations have been performed to study the MilD activity in high-,3 tokamaks such as ISX-B. These initial value calculations build on earlier low ~techniques, but the i3 effects create several new numerical issues. These issues are discussed and resolved. In addition to time-stepping modules, our system of computer codes includes equilibrium solvers (used to provide an initial condition) and output modules, such as a magnetic field line follower and an X-ray diagnostic code.
The transition from current driven modes at low i3 to predominantly pressure driven modes at high i3 is described. The nonlinear studies yield X-ray emissivity plots which are compared with experiment.
📜 SIMILAR VOLUMES
The reduced magneto-hydro-dynamical (MHD) equations show that the pressure gradient together with the magnetic-field curvature as a force drives the plasma short-wavelength MHD instability in a toroidal system. This paper discusses the role of magnetic curvature of tokamak plasmas in some detail. It