smaller nvidia setup problem

Examples/Tests/circuits/inputs_resonator

@@ -14,7 +14,7 @@ stop_time = 100 * wavelength/c
 warpx.cfl = 0.9
 
 # number of cells in each direction
-my_constants.ncells = 200
+my_constants.ncells = 40
 amr.n_cell = ncells ncells ncells
 amr.max_grid_size = ncells
 
@@ -112,14 +112,14 @@ warpx.Bx_excitation_flag_function(x,y,z) = "2 * (x>-smalldx) * (x<smalldx) * (y>
 warpx.By_excitation_flag_function(x,y,z) = "0."
 warpx.Bz_excitation_flag_function(x,y,z) = "0."
 
-warpx.Bx_excitation_grid_function(x,y,z,t) = "exp(-(t-t0)*(t-t0)/(BW*BW))*cos(2*pi*f*(t-t0))"
+warpx.Bx_excitation_grid_function(x,y,z,t) = "exp(-(t-t0)*(t-t0)/(BW*BW))*sin(2*pi*f*(t-t0))"
 warpx.By_excitation_grid_function(x,y,z,t) = "0."
 warpx.Bz_excitation_grid_function(x,y,z,t) = "0."
 
 # plotfile diagnostics
 diagnostics.diags_names = plt
 plt.intervals = 100
-plt.fields_to_plot = Ex Ey Ez Bx By Bz
+plt.fields_to_plot = Ex Ey Ez Bx By Bz sigma
 plt.diag_type = Full
 plt.plot_raw_fields = 1