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Nominal dimensions and physical characteristics of the plane‐parallel chambers.
| Chamber | Sensitive volume (cm3) | Radius (cm) | Entrance window (cm) | Water‐equivalent scaling (g/cm2) | Guard ring (cm) |
|---|---|---|---|---|---|
| NACP‐02 | 0.160 | 0.500 | 0.060 | 0.104 | 0.300 |
| PTW 34001 (Roos) | 0.350 | 0.800 | 0.112 | 0.118 | 0.400 |
| PTW34045 (Advanced Markus) | 0.020 | 0.250 | 0.130 | 0.106 | 0.200 |
