PPC40 Plane Parallel Chamber
PPC40 is a parallel plate ionization chamber for absolute and relative dosimetry of electron (≥2 MeV) and proton beams, as well as photon depth-dose measurements.
Made entirely of PMMA with graphitized electrodes, PPC40 features a circular planar-sensitive volume with a rigid 1 mm entrance window. Waterproof with a ventilated silicone-covered cable, it is ideal for precise absolute dose determinations in reference dosimetry and equipment setup.
Used for Workflow
Detectors RT,
Monthly QA RT,
Monthly QA PT
Features
Outer dimensions
- Chamber outer diameter: 44.0 mm
- Chamber body height: 10.0 mm
- Stem diameter: 10.0 mm
- Stem length: 50.0 mm
Inner dimensions
- Sensitive volume (nominal): 0.40 cm3
- Cylinder height: 2.0 mm
- Entrance window (polarizing electrode) diameter: 20.0 mm
- Entrance window thickness: 1.0 mm
- Diameter of collecting electrode: 16.0 mm
- Guard ring diameter: 17.8 mm
- Guard ring width: 3.4 mm
Operational characteristics
- Polarizing voltage: ±300 V (max. ±500 V)
- Typical leakage current: 5 fA
- Recommended pre-irradiation: 5 Gy
- Typical sensitivity: 11 nC/Gy
- Guard potential: ±300 V (max. ±500 V)
- Temperature range: 15 to 35 °C
- Relative humidity range: 20 % to 80 %
Technical specifications
Chamber | Materials | Window thickness [mg/cm²]/[mm] | Active volume [cm³] | Electrode spacing [mm] | Collecting electrode diameter [mm] | Guard ring width [mm] | Waterproof |
|---|---|---|---|---|---|---|---|
PPC05 | Window and body C552; graphitized (PEEK) electrode | 176 / 1 | 0.05 | 0.5 | 10 | 3.5 | Y |
PPC40 | PMMA | 118 / 1 | 0.4 | 2 | 16 | 4 | Y |
NACP | Mylar foil and graphite window; body PMMA; electrode graphitized | 104 / 0.6 | 0.16 | 2 | 10 | 3 | Y |
Technical data is subject to change without prior notice. Depicted product images and specifications may differ from the actual scope of delivery.
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Brochures
DETECTORS - For Relative and Absolute Dosimetry
