  A second-order accurate divergence-conserving hybrid particle-in-cell code
Maximus has been developed for microscopic modeling of collisionless plasmas.
The main specifics of the code include a constrained transport algorithm for
exact conservation of magnetic field divergence, a Boris-type particle pusher,
a weighted particle momentum deposit on the cells of the 3D spatial grid, an
ability to model multispecies plasmas and an adaptive time step. The code is
efficiently parallelized for running on supercomputers by means of the message
passing interface (MPI) technology; an analysis of parallelization efficiency
and overall resource intensity is presented. A Maximus simulation of the
shocked flow in the Solar wind is shown to agree well with the observations of
the Ion Release Module (IRM) aboard the Active Magnetospheric Particle Tracer
Explorers interplanetary mission.
