1 files changed, 62 insertions, 0 deletions
diff --git a/Example/plasma_acceleration/plasma_acceleration_PICMI.py b/Example/plasma_acceleration/plasma_acceleration_PICMI.py
new file mode 100644
index 000000000..0d831f3e1
--- /dev/null
+++ b/Example/plasma_acceleration/plasma_acceleration_PICMI.py
@@ -0,0 +1,62 @@
+import numpy as np
+from pywarpx import picmi
+#from warp import picmi
+
+nx = 64
+ny = 64
+nz = 64
+
+xmin = -200.e-6
+xmax = +200.e-6
+ymin = -200.e-6
+ymax = +200.e-6
+zmin = -200.e-6
+zmax = +200.e-6
+
+moving_window_velocity = [0., 0., picmi.c]
+
+number_per_cell_each_dim = [2, 2, 1]
+
+grid = picmi.Cartesian3DGrid(number_of_cells = [nx, ny, nz],
+                             lower_bound = [xmin, ymin, zmin],
+                             upper_bound = [xmax, ymax, zmax],
+                             lower_boundary_conditions = ['periodic', 'periodic', 'open'],
+                             upper_boundary_conditions = ['periodic', 'periodic', 'open'],
+                             moving_window_velocity = moving_window_velocity,
+                             warpx_max_grid_size=32, warpx_max_level=0, warpx_coord_sys=0)
+
+solver = picmi.ElectromagneticSolver(grid=grid, cfl=1)
+
+beam_distribution = picmi.UniformDistribution(density = 1.e23,
+                                              lower_bound = [-20.e-6, -20.e-6, -150.e-6],
+                                              upper_bound = [+20.e-6, +20.e-6, -100.e-6],
+                                              directed_velocity = [0., 0., 1.e9])
+
+plasma_distribution = picmi.UniformDistribution(density = 1.e22,
+                                                lower_bound = [-200.e-6, -200.e-6, 0.],
+                                                upper_bound = [+200.e-6, +200.e-6, None],
+                                                fill_in = True)
+
+beam = picmi.Species(particle_type='electron', name='beam', initial_distribution=beam_distribution)
+plasma = picmi.Species(particle_type='electron', name='plasma', initial_distribution=plasma_distribution)
+
+sim = picmi.Simulation(solver = solver,
+                       plot_int = 2,
+                       verbose = 1,
+                       cfl = 1.0,
+                       max_steps = 1000,
+                       warpx_current_deposition_algo = 3,
+                       warpx_charge_deposition_algo = 0,
+                       warpx_field_gathering_algo = 0,
+                       warpx_particle_pusher_algo = 0)
+
+sim.add_species(beam, layout=picmi.GriddedLayout(grid=grid, n_macroparticle_per_cell=number_per_cell_each_dim))
+sim.add_species(plasma, layout=picmi.GriddedLayout(grid=grid, n_macroparticle_per_cell=number_per_cell_each_dim))
+
+# write_inputs will create an inputs file that can be used to run
+# with the compiled version.
+sim.write_input_file(file_name = 'inputs_from_PICMI')
+
+# Alternatively, sim.step will run WarpX, controlling it from Python
+#sim.step()
+