Ionization chamber simulation program crashes

Hello,

I would like to simulate a simplified system that uses an ionization chamber to measure the dose of a proton therapy device. The schematic diagram of the system is shown in the figure. The configuration file for Allpix² is attached. The current issue is that when running allpix -c simple_main.conf, the system crashes. Could you please advise on what might be wrong with the configuration? Thank you very much.

XZ

simple_main.conf (478 Bytes)

IonizationChamber.conf (866 Bytes)

simple_chamber.conf (94 Bytes)

Proton Beam Direction (Z-axis)

┌─────────────────────┐ ← Entrance Window (0.05mm Mylar, Z=+1.5mm)
├─────────────────────┤ ← Cathode (0.5mm Al, Z=+1mm, 0V)
│ │
│ Gas Sensitive Layer │ ← 2mm air, sensitive volume
│ (2mm air) │
│ │
├─────────────────────┤ ← Anode (0.5mm Al, Z=-1mm, +300V)
└─────────────────────┘

Lateral dimensions: 50 × 50 mm