CC04 Ionization Chamber

CC04 is the conventional ionization chamber for measurements of small fields and ranges with high dose gradients, e.g., stereotactic fields. CC04 is intended for absolute and relative dosimetry of photon, electron, and proton beams in radiotherapy. 

Measurements can be performed in air, water phantoms, or solid phantoms. CC04 is a high spatial resolution, small volume chamber. It is waterproof, vented through a waterproof sleeve, and fully guarded.

Compatible with Machine/Modality/Application:

Small Field Dosimetry,

TG106

Used for Workflow

Commissioning and Annual QA RT,

Detectors RT

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Features

Inner dimensions

Inner dimensions

  • Active volume: 0.04 cm3
  • Total active length: 3.6 mm
  • Cylinder length: 1.6 mm
  • Inner diameter of outer electrode: 4.0 mm
  • Wall thickness: 0.4 mm (70 mg/cm2 )
  • Diameter of inner electrode: 1.0 mm
  • Length of inner electrode: 2.1 mm

Operational characteristics

Operational characteristics

  • Polarizing voltage: ±300 V (max. ±500 V)
  • Typical leakage current: 3 fA
  • Recommended pre-irradiation: 5 Gy
  • Typical sensitivity: 1 nC/Gy
  • Guard potential: ±300 V (max. ±500 V)
  • Temperature range: 15 °C – 35 °C
  • Relative humidity range: 20 % – 80 %

Inner dimensions

  • Active volume: 0.04 cm3
  • Total active length: 3.6 mm
  • Cylinder length: 1.6 mm
  • Inner diameter of outer electrode: 4.0 mm
  • Wall thickness: 0.4 mm (70 mg/cm2 )
  • Diameter of inner electrode: 1.0 mm
  • Length of inner electrode: 2.1 mm

Operational characteristics

  • Polarizing voltage: ±300 V (max. ±500 V)
  • Typical leakage current: 3 fA
  • Recommended pre-irradiation: 5 Gy
  • Typical sensitivity: 1 nC/Gy
  • Guard potential: ±300 V (max. ±500 V)
  • Temperature range: 15 °C – 35 °C
  • Relative humidity range: 20 % – 80 %

Technical specifications

Cavity Model

Cavity Volume (cm³)

Cavity Length (mm)

Cavity Radius (mm)

Wall Material

Wall Thickness (g/cm²)

Central Electrode Material

Water-proof

CC04

0.04

3.6

2

C552

0.07

C552

Y

CC08

0.08

4

3

C552

0.07

C552

Y

CC13

0.13

5.8

3

C552

0.07

C552

Y

CC25

0.25

10

3

C552

0.07

C552

Y

Technical data is subject to change without prior notice. Depicted product images and specifications may differ from the actual scope of delivery.

Find more resources here

Brochures

Scientific References

DETECTORS - For Relative and Absolute Dosimetry
Brochures (2 MB)
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Monte Carlo calculated beam quality correction factors for high energy photon and electron fields - Damian Czarnecki
Scientific References (1 MB)
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