Miniature gamma ionization chambers

Name: Miniature gamma ionization chambers
Brand: Exosens

Photonis produces Miniature Gamma Ionization Chambers mainly dedicated for the measurement of high intensity gamma radiations, as close as possible to the gamma generator.

Small external dimensions (upon customer's request)

Measurement of high intensity gamma radiations

High reliability and long operating life

Customization according to the user’s needs

Miniature gamma ionization chambers

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Technical information

Basic type	External diameter (mm)	Length (mm)	Gamma sensitivity (A/Gy.h-1 60Co)
CRGE10/Xe	7	85.5	4.5x10^-11
CRGE10/N2	7	85.5	4.8x10^-13

Description

By full control of the following processes, Photonis Nuclear Instrumentation can supply custom gamma ionization chambers with the highest quality and reliability levels

Adaptation of industrialized gamma ionization chambers to customer specific requirements.
Development of new gamma ionization chambers with our experienced R&D team.
Long term collaboration with the French Alternative Energies and Atomic Energy Commission / CEA (theoretical approach, - modeling, qualification tests in research reactors).
Complete manufacturing process on site.
Support from all the Photonis Group activities, experience and knowledge.
Certifications & Quality Assurance programs adapted to the customer environment.
Technical support, applying expertise

Examples of custom versions from basic types

Gamma sensitivity tailored to individual requirement

Connector type (BNC, BNC HT, HN, SMA or others)

Adapted external dimensions and mechanical interfaces
Ruggedized structure for harsh environment (radiation, temperature, humidity, mechanical stress)

Main features

Structure: One coaxial mineral insulated cable connected to the detector.
Electrodes: The two electrodes consist of a concentric stainless steel tube assembly.
Filling gas: The gas type and pressure depend on the required sensitivity. Standard gases are nitrogen or xenon.
Insulators: As it is necessary to measure extremely low currents, insulators must be of very high quality and radiation resistant. Photonis only uses high-grade alumina insulators from qualified suppliers.

References

The French Alternative Energies and Atomic Energy Commission (CEA) selected Photonis as its technological partner for a cooperative development of neutron and gamma detectors when the French nuclear power program took shape in the sixties.