!no_digested

beginning[beta_a] = 10
beginning[beta_b] = 10
beginning[p0c] = 0
parameter[geometry] = open
parameter[particle] = electron

bmad_com[csr_and_space_charge_on] = T
space_charge_com[rel_tol_tracking] = 0.1
space_charge_com[dt_track_step] = 1e-13
space_charge_com[space_charge_mesh_size] = (4,4,4)
space_charge_com[debug] = F

apex_gun: e_gun, 
   L = 0.175,
   tracking_method = time_runge_kutta,  mat6_calc_method = tracking, space_charge_method = cathode_fft_3d,
   rf_frequency = 1300e6/7,
   field_calc = fieldmap, 
   grid_field = call::APEX_gun_fieldmesh.h5,
   aperture_at = continuous, aperture_type=wall3d,
   wall = {section={s=0, v(1) = {0, 0, 0.015}}, section={s=0.175, v(1)={0, 0, 0.015}} }
  
P1: pipe, L = 0.5 - apex_gun[L]

GUN: apex_gun, voltage = 750e3, phi0 = 0

lat: line = (GUN, P1)

use, lat