| Popis: |
The CQL3D bounce-averaged Fokker-Planck (FP) code has been widely applied within the tokamak modeling community. For the reported work, it has been augmented to include axisymmetric open-field-line geometry, suitable for calculation of energetic ion and electron distributions in the low collisionality, tau_bounce << tau_collision, regime of energetic particles in mirrors. Application is made to the GDT device. Ion distributions resulting from neutral beam injected ions, in combination with quasilinear diffusion due to high harmonic fast waves are calculated. The HHFW can very efficiently enhance DD neutron production. X-mode ECH heating of electrons is modelled, giving high field first harmonic and low field second harmonic heating. The first harmonic scenario gives enhanced edge heating. |
