  An electrostatic gyrokinetic-based model is applied to simulate parallel
plasma transport in the scrape-off layer to a divertor plate. The authors focus
on a test problem that has been studied previously, using parameters chosen to
model a heat pulse driven by an edge-localized mode (ELM) in JET. Previous work
has used direct particle-in-cell equations with full dynamics, or Vlasov or
fluid equations with only parallel dynamics. With the use of the gyrokinetic
quasineutrality equation and logical sheath boundary conditions, spatial and
temporal resolution requirements are no longer set by the electron Debye length
and plasma frequency, respectively. This test problem also helps illustrate
some of the physics contained in the Hamiltonian form of the gyrokinetic
equations and some of the numerical challenges in developing an edge
gyrokinetic code.
