Gamma Irradiation Calibration Systems

Gemini specialize in the supply of Secondary Standard Dosimetry Systems. We have designed, manufactured and commissioned a significant number of Gamma, Neutron, and X-ray Calibration Systems. As well as numerous upgrades, to both mechanical and control systems.

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Control Unit
The irradiator exposure unit is controlled via a Windows based GammaCal™ software system, its main features include:

• Full control of X, Y, Z and rotational axes.
• Full shutter lift control of Gamma irradiator main gamma shutter and americium shutter unit.
• Full control of rotary gamma source cassette.
• Certificate issued for each instrument calibrated by the Gamma Irradiator.
• In-cell control of video equipment and screen grab display of camera in top corner of monitor.
• Radiological status supplied on monitor screen; full control of warning lights, audible alarm and e-stops.

Video Systems

• Multi-zoom camera lens for clear visual image of calibration instrument.
• Pan/tilt unit attached to colour camera for accurate positioning.
• Adjustable stand.
• In-cell LCD mini monitor attached to trolley.
• Controller unit situated in control room to fully control pan/tilt, zoom and focus of camera.

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Gamma Irradiation Exposure unit

• Lead shielded steel casing and heavy-duty steel pedestal.
• Tungsten fail-safe Gamma Irradiator shutter unit.
• Multi-ring Tungsten/lead collimator.
• Multi-source Gamma cassette with motor driven spindle assembly.
• Bolt on Americium Irradiator exposure unit.
• Size of Gamma Irradiator exposure unit can be re-calculated to meet the source requirements of the customer.

Track & Trolley unit

• AI Alloy construction using channel, angle and ground plate.
• Precision linear rails and bearings used on X, Y and Z axes.
• X axis driven via a linear actuator using a stepper motor/gearbox arrangement.
• Y axis driven via a lead screw using a stepper motor.
• Z axis raised and lowered via a screw jack using a stepper motor/gearbox arrangement.
• The rotational axis is driven via a precision rotary table.
• Energy chain used on X and Y axes for tidy/stress free transportation of cables.
• Lengths, widths and heights can be modified to meet the requirements of the customer.

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Gemini offer a wide range of Products and services related to Gamma Calibration Systems. Gemini designed Gamma irradiator systems as well as Third party Gamma irradiator systems. Such as :

• Irradiator health Checks
• Source storage Vessels
• Automatic Collimator Plug
• Legacy Irradiator

Gemini can be your solution for anything Gamma Calibration System related.

Gemini's newest Gamma Irradiation Calibration Rig, recently installed.