IBA Dosimetry Radiation Therapy

CC13 Ionization Chamber

Standard chamber for clinical use in water phantoms

CC13 is the standard chamber for clinical use in water phantoms and for measurements of output factors. The ionization chamber CC13 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.

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IBA Dosimetry CC13
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IBA Dosimetry Radiation Product Detectors

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Technical specs

Inner dimensions

  • Active volume: 0.13 cm3
  • Total active length: 5.8 mm
  • Cylinder length: 2.8 mm
  • Inner diameter of outer electrode: 6.0 mm
  • Wall thickness: 0.4 mm (70 mg/cm2 )
  • Diameter of inner electrode: 1.0 mm
  • Length of inner electrode: 3.3 mm

Operational characteristics

  • Polarizing voltage: ±300 V (max. ±500 V)
  • Typical leakage current: 3 fA
  • Recommended pre-irradiation: 5 Gy
  • Typical sensitivity: 3.6 nC/Gy
  • Guard potential: ±300 V (max. ±500 V)
  • Temperature range: 15 °C – 35 °C
  • Relative humidity range: 20 % – 80 %


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