Status Report on the “merging” of the Electron-cloud Code Posinst with the 3-d Accelerator Pic Code Warp

We have integrated the electron-cloud code POSINST [1] with WARP [2]–a 3-D parallel Particle-In-Cell accelerator code developed for Heavy Ion Inertial Fusion–so that the two can interoperate. Both codes are run in the same process, communicate through a Python interpreter (already used in WARP), and share certain key arrays (so far, particle positions and velocities). Currently, POSINST provides primary and secondary sources of electrons, beam bunch kicks, a particle mover, and diagnostics. WARP provides the field solvers and diagnostics. Secondary emission routines are provided by the Tech-X package CMEE.