PPC05 Plane Parallel Chamber
PPC05 is a parallel plate ionization chamber for absolute and relative dosimetry of electron beams (≥2 MeV), as well as photon and proton beams, measuring absorbed dose to water.
PPC05 features air-equivalent Shonka C552 plastic, graphitized PEEK electrodes, and a circular planar-sensitive volume with a 1 mm thick entry window. With a 0.6 mm plate spacing, 9.9 mm diameter, and a 3.4 mm guard ring, it provides high-resolution depth dose measurements and is waterproof with a vented design.
Compatible with Machine/Modality/Application:
Used for Workflow
Commissioning and Annual QA PT,
Commissioning and Annual QA RT,
Detectors RT,
Monthly QA RT,
Monthly QA PT
Features
Outer dimensions
- Chamber outer diameter: 30.0 mm
- Chamber body height: 14.0 mm
- Stem diameter: 8.5 mm
- Stem length: 38.0 mm
Inner dimensions
- Sensitive volume (nominal): 46.0 mm3
- Cylinder height: 0.6 mm
- Entry window (polarizing electrode) diameter: 20.0 mm
- Entry window thickness: 1.0 mm (0.176 g/cm2)
- Diameter of collecting electrode: 9.9 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: 1.7 nC/Gy
- Guard potential: ±300 V (max. ±500 V)
- Temperature range: +15 – +35 °C
- Relative humidity range: 20 % – 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 graphized | 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
