diff --git a/Examples/Tests/collider_relevant_diags/analysis_multiple_particles.py b/Examples/Tests/collider_relevant_diags/analysis_multiple_particles.py
index 87bde4459a2..af94e3eb383 100644
--- a/Examples/Tests/collider_relevant_diags/analysis_multiple_particles.py
+++ b/Examples/Tests/collider_relevant_diags/analysis_multiple_particles.py
@@ -2,10 +2,8 @@
 import sys 
 import re
 import numpy as np
-import matplotlib.pyplot as plt
 from scipy.constants import m_e, c, hbar, e 
 import openpmd_api as io
-import matplotlib.colors
 import pandas as pd 
 
 E_crit = m_e**2*c**3/(e*hbar)
diff --git a/Examples/Tests/collider_relevant_diags/inputs_3d_multiple_particles b/Examples/Tests/collider_relevant_diags/inputs_3d_multiple_particles
index 6eb18f8320d..f06c1ca6a4b 100644
--- a/Examples/Tests/collider_relevant_diags/inputs_3d_multiple_particles
+++ b/Examples/Tests/collider_relevant_diags/inputs_3d_multiple_particles
@@ -22,7 +22,7 @@ my_constants.dt = cfl/clight/sqrt((1./dx)^2+(1./dy)^2+(1./dz)^2)
 
 # DIAGS
 my_constants.every_ps = floor(ps/dt)
-my_constants.out_freq_red = 10 
+my_constants.out_freq_red = 10
 my_constants.out_freq_full = 10 #0.01*every_ps
 
 #################################
@@ -32,22 +32,22 @@ max_step = 3
 amr.n_cell = nx ny nz
 #amr.max_grid_size = 64
 #amr.blocking_factor = 2
-warpx.numprocs = 1 1 1 
+warpx.numprocs = 1 1 1
 amr.max_level = 0
 geometry.dims = 3
-geometry.prob_lo = 0 0 0 
-geometry.prob_hi =  8 8 8 
-particles.do_tiling = 0 
-warpx.use_filter = 0 
+geometry.prob_lo = 0 0 0
+geometry.prob_hi =  8 8 8
+particles.do_tiling = 0
+warpx.use_filter = 0
 
 
 #################################
 ######## BOUNDARY CONDITION #####
 #################################
 boundary.field_lo = periodic periodic periodic
-boundary.field_hi = periodic periodic periodic 
-boundary.particle_lo = periodic periodic periodic 
-boundary.particle_hi = periodic periodic periodic  
+boundary.field_hi = periodic periodic periodic
+boundary.particle_lo = periodic periodic periodic
+boundary.particle_hi = periodic periodic periodic
 
 #################################
 ############ NUMERICS ###########
@@ -63,7 +63,7 @@ algo.load_balance_intervals=100
 particles.E_ext_particle_init_style = constant
 particles.B_ext_particle_init_style = constant
 particles.E_external_particle = 10000. 0. 0.
-particles.B_external_particle = 0. 5000. 0. 
+particles.B_external_particle = 0. 5000. 0.
 
 #################################
 ########### PARTICLES ###########
@@ -75,11 +75,11 @@ beam_e.species_type = electron
 beam_e.injection_style = MultipleParticles
 beam_e.multiple_particles_pos_x = 4.5  3.5  0.5
 beam_e.multiple_particles_pos_y = 4.5  2.5  1.5
-beam_e.multiple_particles_pos_z = 4.5  1.5  1.5 
+beam_e.multiple_particles_pos_z = 4.5  1.5  1.5
 beam_e.multiple_particles_ux = 0.3 0.2 0.1
-beam_e.multiple_particles_uy = 0.4 -0.3 -0.1 
+beam_e.multiple_particles_uy = 0.4 -0.3 -0.1
 beam_e.multiple_particles_uz = 0.3 0.1 -10.
-beam_e.multiple_particles_weight = 1. 2 3 
+beam_e.multiple_particles_weight = 1. 2 3
 beam_e.initialize_self_fields = 0
 beam_e.self_fields_required_precision = 5e-10
 beam_e.do_qed_quantum_sync = 1
@@ -90,21 +90,21 @@ beam_e.do_not_deposit = 1
 beam_p.species_type = positron
 beam_p.injection_style = MultipleParticles
 beam_p.multiple_particles_pos_x = 4.5 3.5 0.5
-beam_p.multiple_particles_pos_y = 4.5 2.5 1.5 
-beam_p.multiple_particles_pos_z = 4.5 1.5 1.5 
+beam_p.multiple_particles_pos_y = 4.5 2.5 1.5
+beam_p.multiple_particles_pos_z = 4.5 1.5 1.5
 beam_p.multiple_particles_ux = 0.3 0.2 0.1
-beam_p.multiple_particles_uy = 0.4 -0.3 -0.1 
+beam_p.multiple_particles_uy = 0.4 -0.3 -0.1
 beam_p.multiple_particles_uz = 0.3 0.1 -10.
-beam_p.multiple_particles_weight = 1. 2 3 
+beam_p.multiple_particles_weight = 1. 2 3
 beam_p.initialize_self_fields = 0
 beam_p.self_fields_required_precision = 5e-10
 beam_p.do_qed_quantum_sync = 1
-beam_p.qed_quantum_sync_phot_product_species = pho 
+beam_p.qed_quantum_sync_phot_product_species = pho
 beam_p.do_not_push = 1
 beam_p.do_not_deposit = 1
 
-pho.species_type = photon 
-pho.injection_style = none 
+pho.species_type = photon
+pho.injection_style = none
 
 #################################
 ############# QED ###############
@@ -116,7 +116,7 @@ qed_qs.chi_min = 1.e-3
 qed_bw.lookup_table_mode = builtin
 qed_bw.chi_min = 1.e-2
 
-warpx.do_qed_schwinger = 0 
+warpx.do_qed_schwinger = 0
 
 #################################
 ######### DIAGNOSTICS ###########
@@ -145,7 +145,7 @@ warpx.reduced_diags_names = FieldEnergy FieldMomentum FieldMaximum ParticleExtre
 
 ColliderRelevant_beam_e_beam_p.type = ColliderRelevant
 ColliderRelevant_beam_e_beam_p.intervals = 1
-ColliderRelevant_beam_e_beam_p.species =beam_e beam_p  
+ColliderRelevant_beam_e_beam_p.species =beam_e beam_p
 
 FieldEnergy.type = FieldEnergy
 FieldEnergy.intervals = out_freq_red