| Features | Properties |
| Total chamber volume (cm3) | 271.43 |
| Air sensitive volume (cm3) | 207.34 |
| Graphite foil density (g/cm3) | 0.7 |
| Entrance window (PMMA graphite coated) thickness (mm) | 0.5 |
| Central electrode (Graphite foil) thickness (mm) | 0.1 |
| Central electrode diameter (mm) | 180 |
| Collecting electrode diameter (mm) | 160 |
| Central hole diameter (mm) | 60 |
| Outer diameter (mm) | 200 |