PHOENIX: MHD spectra of rotating laboratory and astrophysical plasmas

Introduction Different kinds of tokamak experiments have been done where the plasma rotates mainly in the toroidal direction. Rotation has been induced by e.g. neutral beam injection (NBI). Furthermore, in astrophysics the plasma in accretion disks also rotates mainly in the toroidal direction. We present the newly developed spectral code PHOENIX which makes use of the JacobiDavidson subspace iteration method [1] for complex eigenvalue computations. This code is able to take the toroidal and poloidal rotation of the plasma equilibrium into account for its linear wave and instability diagnostics. Test cases of this code are presented and compared with other existing codes, like CASTOR [3], ERATO, and PEST-1. Furthermore, recent and new results are presented with particular emphasis on MHD spectra for stationary tokamak equilibria. These equilibria include purely toroidal flow or toroidal and poloidal flow.