LCODE is free software for simulations of particle beam-driven plasma wakefield acceleration.
LCODE 3D is new and experimental software.
For now, please please contact team@lcode.info
for assistance with installing and running it.
You may also be looking for more mature 2D version of LCODE at http://star.inp.nsk.su/~lotov/lcode/ instead.
LCODE 3D is distributed under the terms of AGPLv3+ License, see LICENSE.txt.