Topic/Type: 1. Plasma Simulation, Poster

Interaction between fast particles and magnetohydrodymanical waves in the presence of toroidal flow

J.W.S. Blokland1, S.D. Pinches2

1 1FOM Institute for Plasma Physics Rijnhuizen, Assocation EURATOM-FOM, Trilateral Euregio Cluster, Nieuwegein, The Netherlands
2 2EURATOM/UKAEA Fusion Association, Culham Science Centre, Culham, Abingdon, OX14 3DB, United Kingdom

In many tokamak experiments, the neutral beam injection is used for additional heating of the plasma. The angular momentum associated with the injected neutral particles imparts a net rotation on the plasma. This rotation plays an important role in plasma stability and in the interaction between the fast particles and the bulk plasma. However, in the next generation tokamaks the plasma will most likely rotate significantly slower and therefore the influence of the rotation in present devices needs to be investigated in detail.

We present a fully consistent model of the bulk plasma, the fast particles and their interaction. The bulk is described using the magnetohydrodynamical equations, whilst for the fast particle a kinetic description is used. The tokamak equilibria are computed using the FINESSE code and their stability is analysed using the PHOENIX code. Both codes take toroidal flow into account. The HAGIS code is used to simulate the fast particles. This code has been extended to deal with the presence of toroidal flow in the equilibrium. Examples of testing the model against experimental data from various tokamaks including MAST will be presented.