Gamma 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.
Control Unit
The 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 main gamma shutter and americium shutter unit.
  •  Full control of rotary gamma source cassette.
  •  Certificate issued for each instrument calibrated.
  •  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.
Gamma Exposure unit
  •  Lead shielded steel casing and heavy-duty steel pedestal.
  •  Tungsten fail-safe gamma shutter unit.
  •  Multi-ring Tungsten/lead collimator.
  •  Multi-source cassette with motor driven spindle assembly.
  •  Bolt on Americium exposure unit.
  •  Size of 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 systems as well as Third party systems. Such as :
Gemini can be your solution for anything Gamma Calibration System related.
Gemini's newest Gamma Calibration Rig, recently installed.