ImpactIonisation: add one more test in TransProp

# SPDX-FileCopyrightText: 2023 CERN and the Allpix Squared authors

# SPDX-License-Identifier: MIT

#DESC tests final gain of single event

[Allpix]

detectors_file = "/home/schuep/software/allpix-squared/src/modules/TransientPropagation/tests/detector.conf"

number_of_events = 1

random_seed = 0

[DepositionPointCharge]

model = "fixed"

source_type = "point"

position = 445um 220um 196um

number_of_charges = 10

[ElectricFieldReader]

model = "custom"

field_function = "((z < [0]) ? [3] : ((z > [1]) ? [3] : [2]))"

field_parameters = 198um, 199um, -280kV/cm, -5000V/cm

[WeightingPotentialReader]

model = pad

[TransientPropagation]

log_level = DEBUG

temperature = 293K

charge_per_step = 10

timestep = 1ps

multiplication_model = "overstraeten"

multiplication_threshold = 10kV/cm

#PASS Propagated 20 (initial: 10) to (445.545um,219.416um,200um) in 0.073ns time, induced 18e, final state: halted

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