Session KP01 - Poster Session III.
POSTER session, Tuesday afternoon, March 23
Exhibit Hall, GWCC
Expressions for bootstrap current in stellarators commonly given in the literature possess resonances at rational surfaces, arising from large excursions of toroidally trapped particles in the low collision frequency regime. It is shown that these resonances are due to an improper neglect of particle collisions, and that for typical plasma parameters the excursions do not exceed the normal banana width. Simulations of bootstrap current using a Monte-Carlo \delta f technique are carried out in simple model equilibria and in a period two numerical stellarator equilibrium and the results are analyzed.