Detectors and Ionisation Chambers

Detectors and Ionisation Chambers

Overview

IBA Dosimetry offers a full range of ionisation chambers and pSi semiconductor detectors for various 2D and 3D water phantom systems and solid phantoms. All detectors are from IBA’s in-house production and have been extensively tested to meet the highest criteria in radiotherapy dosimetry.

Compact, small volume chambers

RAZOR Nano Chamber

The RAZOR™ Nano Chamber with its smallest volume in the market and high-performance physics characteristics is a unique ionisation chamber solution for Small Field Dosimetry.

  • Cavity volume of 0.003 ccm
  • Central electrode material: graphite
  • For Photon and Electron beams in RT

RAZOR Chamber

The RAZOR™ Chamber is a compact chamber for measurements of small fields and of ranges with high dose gradients, such as stereotactic fields. It is suitable for Relative Dosimetry of photon and electron fields in radiotherapy.

  • High-Performance Air Ionization Chamber for Relative and Absolute Dosimetry
  • Suitable for Relative Dosimetry of photon and electron fields in radiotherapy
  • The Razor™chamber is a compact chamber for measurements of small fields and of ranges with high dose gradients, e.g. stereotactic fields

CC04 Ionization Chamber

The CC04 is the conventional ionisation 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.

CC08 Ionization Chamber

CC08 is used for customised applications during manufacturing and installation of linear accelerators (e.g. “Buddelship”).

The CC08 is a high spatial resolution, small volume chamber. It is waterproof, vented through a waterproof sleeve, and fully guarded.

CC13 Ionization Chamber

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.

CC13-S Ionization Chamber

The ionization chamber CC13-S is intended for relative dosimetry of photon, electron, and proton beams in radiotherapy. Measurements can be performed in air, water phantoms, or solid phantoms. The CC13-S is a high spatial resolution, small volume chamber. It is waterproof, vented through a waterproof sleeve, and fully guarded. It is designed for axial or lateral beam incidence and for the use in RFA-300 and RFA-200 phantoms only, using the grounded input technology.

CC25 Ionisation Chamber

The ionization chamber CC25 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. The CC25 is a high spatial resolution, small volume chamber. It is waterproof, vented through a waterproof sleeve, and fully guarded.

Farmer-type chambers

FC65-G/FC65-P Ionisation Chamber

The Farmer-type ionisation chambers are intended for the absolute dosimetry of photon and electron beams at therapy level dose rates. Furthermore, these chambers are suitable for dosimetry in proton fields and for depth dose measurements and field profile analysis. When calibrated accordingly, these chambers can be used for measuring the quantities absorbed dose to water, absorbed dose to air, air kerma, or exposure in air, depending upon the type and quality of radiation and the relevant code of practice.  FC65-G ionisation chamber is intended for reference dosimetry and calibrations, while the FC65-P ionisation chamber is intended for daily checks of treatment machines and for any other use in the frequent routine application.

The chamber is designed preferably for the energy ranges of photons and electrons at medical accelerators. It can also be employed in X-ray beams with generating potentials from 70 kV and for gamma radiation of 137Cs and 60Co. The energy range of proton beams with available beam quality correction factors is between 50 and 250 MeV.

FC23-C Ionisation Chamber

The FC23-C is a shortened Farmer-type ionization chamber intended for absolute dosimetry of photon and electron beams at therapy level dose rates. Furthermore, these chambers are suitable for dosimetry in proton fields and for depth dose measurements and field profile analysis. When calibrated accordingly, these chambers can be used for measuring the quantities absorbed dose to water, absorbed dose to air, air kerma, or exposure in air, depending upon the type and quality of radiation and the relevant code of practice.

The chamber is designed preferably for the energy ranges of photons and electrons at medical accelerators. It can also be employed in X-ray beams with generating potentials from 70 kV to 280 kV and for gamma radiation of 137Cs and 60Co. The energy range of proton beams with available chamber factors is between 50 and 250 MeV.

Plane-parallel chamber

PPC05 Plane Parallel Chamber

The parallel plate ionization chamber PPC05 is designed for absolute and relative electron beam dosimetry above 2 MeV in the measuring quantity absorbed dose to water. It can be used for photon and proton absolute and relative dosimetry as well.

The construction materials are air equivalent conducting plastic Shonka C552 (housing, entry window and side walls) and highly insulating plastics PEEK and PPE. The collecting electrode material is graphitized PEEK. The chamber is constructed with a circular sensitive volume of planar geometry covered by a rigid 1 mm thick entry window. The small collecting volume with 0.6 mm plate spacing, 9.9 mm diameter and a 3.4-mm-wide guard ring enables excellent resolution in depth dose studies and requires a small perturbation correction. The chamber is waterproof and vented through a silicone sleeve

PPC40 Plane Parallel Chamber

The parallel plate ionization chamber PPC40 is designed for absolute and relative electron beam dosimetry above 2 MeV in the measuring quantity absorbed dose to water. It can be used for proton beam absolute and relative dosimetry and for photon beam depth-dose measurements as well. The PPC40 is entirely made from PMMA; with graphitized electrodes. It is constructed with a circular sensitive volume of planar geometry covered by a rigid 1 mm thick entrance window. As an associated measuring instrument for precise absolute dose determinations, in reference dosimetry, compliance testing or installation and set-up of treatment machines or other equipment, it is recommended to use the reference-class therapy dosimeter Dose1. The PPC40 is waterproof and its cable is covered by a watertight silicon sleeve that allows for air ventilation.

NACP Plane Parallel Chamber

The NACP is designed according to recommendations of the Nordic Association of Clinical Physicists (NACP), Acta Radiologica Oncology 19,55. The chamber is used for absolute dosimetry of electron beams 2-50 MeV. A thinner front wall minimizes contamination of the beam, allows measurements at shallow depths, and guarantees high accuracy even at low electron energies. It can be used for proton beam absolute and relative dosimetry and for photon beam depth-dose measurements as well.

The collecting electrode is manufactured with graphitized polystyrene. The NACP chamber cable is covered by a watertight silicon sleeve that allows for air ventilation.

Multi-detector array

LDA-99 SC

One dimensional multidetector array consisting of 99 Hi-pSi diode detectors with just 5 mm spacing between the individual detectors. The LDA-99 SC can be used in water phantom models Blue Phantom 2 for fast and accurate commissioning of dynamic and virtual wedges as well as acquisition of standard inplane, crossplane and diagonal beam profiles. Furthermore, the LDA-99 SC can also be used for in air QA applications. The LDA-99 SC is fully integrated into OmniPro-Accept software (minimum version 7.1 required). Data transfer via Ethernet connection.

Diode detectors

The diode detectors from IBA Dosimetry are an excellent choice in relative field analysis as well as output factor measurements. They are based on the 3rd generation of pSi semiconductors. Since their introduction in 1992, the high doped p-type silicon detector chips, specifically designed for radiation therapy applications, have been the natural choice for measurements where high spatial resolution is required. The accuracy and lifetime of the diode detectors are unsurpassed in the field of radiation therapy today.

RAZOR Detector

The RAZOR™ Detector is a compact chamber for measurements of small fields and of ranges with high dose gradients, e. g. stereotactic fields.

Suitable for Relative Dosimetry of photon and electron fields in radiotherapy

  • High-performance diode detector
  • Diode detector designed for Relative Dosimetry
  • For SRS / SBRT photon and electron beams
  • Commission Accuracy & Efficiency