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Gamma Irradiator Systems

Hopewell Designs, Inc. offers several industry-leading gamma beam irradiators. These easy-to-use systems will measurably increase efficiency and accuracy in a variety of user applications. Each irradiator produces gamma radiation beams of variable intensity for exposing objects to gamma rays from Cesium-137 and Cobalt-60 sources. These systems are available with manual operation using electronic controllers, or with full automation that includes computer control, auto set-up, automated irradiator calibration and more.

The Model G10 Gamma Beam Irradiator is well suited for health physics instrument calibration.  The horizontal free-in-air radiation beam provides uniform and precision dose rates. The ISO-4037 collimator minimizes scatter.  With 2 sources and the attenuator set, the dose rate can range over six orders of magnitude. 

A simple design and quality manufacturing assure this system will operate reliably for decades**. The system may be controlled by computer or an electronic controller (PLC+HMI). There are six configurations to choose from based on source quantity and size.

**Highly reliable calibration system that is field-proven through tens of thousands of hours of use without failure.

  • Single or dual source models.
  • Available with Cesium-137 and/or Cobalt-60 sources
  • With source options and attenuators, exposure rates are available from 1 uSv/hr to 100 Sv/hr
  • High precision and repeatability assure accurate calibrations with low uncertainty
  • Collimated and uniform beam profile.
  • Electronic operation or fully-automated computer control.
  • Computer control provides extensive automation to reduce errors and improve efficiency
  • Easy to use with an intuitive operator interface.
  • Inherent fail-safe design.
  • Highly reliable
  • Calibration available with traceability to NIST
Dose Rate: 1 uSv/hr (0.1 mR/hr) to 100 Sv/hr (10 mR/hr)
Cesium 137 Sources: 0.4 GBq (10.8 mCi) to 65 TBq (1757 Ci)
Cobalt-60 Sources: 0.4 GBq (10.8 mCi) to 37 GBq (1 Ci)
Collimator: ISO4037 17° or custom design
External exposure rates: <2 uSv/hr (0.2 mR/hr) @ 30cm (11.81”) from the surface
Size: Nominal 40cm (15.75”) x 70cm (27.56”) x 160cm (63”) tall
Weight: 300 to 900 kg (661 to 1,984 lbs) depending on model
Power: 120/220 VAC, 50/60 Hz, 1500 watts
  • Model T20 precision linear positioning track, manual or automated, 1 to 4 axes
  • 0 - 8000X attenuator Set
  • Additional collimators for different beam sizes
  • Safety interlock system
  • Video cameras for instrument and room viewing
  • Jigs/fixtures
  • Dosimeter phantoms
  • Laser alignment
  • Temperature, Pressure, Humidity Monitors
  • Calibration equipment & service

Please register with us below in order to download the technical document(s) for the Model G10 Gamma Beam Irradiator.

The Model GC60 Gamma Beam Irradiator is well suited for instrument calibration.  The horizontal free-in-air radiation beam provides uniform and precision dose rates. The ISO-4037 collimator minimizes scatter. With a capacity for 6 sources, it offers the maximum flexibility in configuration and future expansion. Sources can easily be added and changed at a future date. The system may be controlled by computer or an electronic controller (PLC). Three configurations are available based on source size.

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  • Up to 6 Sources
  • Available with Cesium-137 and/or Cobalt-60 sources
  • With source options and attenuators, exposure rates are available from 1 uSv/hr to 100 Sv/hr
  • High precision and repeatability assure accurate calibrations with low uncertainty
  • Collimated and uniform beam profile.
  • Electronic operation or fully-automated computer control.
  • Computer control provides extensive automation to reduce errors and improve efficiency
  • Easy to use with an intuitive operator interface.
  • Inherent fail-safe design.
  • Highly reliable
  • Calibration available with traceability to NIST
  • Dose Rate - 1 uSv/hr (0.10 mR/hr) to 100 Sv/hr (10mR/hr)
  • Cesium-137 Sources: 0.4 GBq (10.8 mCi) to 65 TBq (1757 Ci)
  • Cobalt-60 Sources: 0.4 GBq (10.8 mCi) to 37 GBq (1 Ci)
  • Collimator - ISO4037 17° or custom design
  • External exposure rates < 2 uSv/hr (0.20 mR/hr) @ 30cm (11.81”) from the surface
  • Size - Nominal 100cm (39.37”) x 90cm (39.43”) x 220cm (86.61”) tall
  • Weight - 2,400 to 4,700 kg (5,292 to 10,726 lbs) depending on model
  • Power - 120/220 VAC, 50/60 Hz, 1500 watts

 

  • Model T20 precision linear positioning track, manual or automated, 1 to 4 axes
  • 0 - 8000X attenuator Set
  • Additional collimators for different beam sizes
  • Safety interlock system
  • Video cameras for instrument and room viewing
  • Jigs/fixtures
  • Dosimeter phantoms
  • Laser alignment
  • Temperature, Pressure, Humidity Monitors
  • Calibration equipment & service

Please register with us below in order to download the technical document(s) for the Model GC 60 Gamma Beam Irradiator.

The Model DS20 Panoramic irradiator provides a 360° radiation field for irradiating personnel dosimetry. A Cesium-137 source is available from 50 mCi to 10 Ci. The system comes complete with radiation sources, shielded enclosure, exposure position, rotating turntable and control panel.

  • Single source
  • Available with Cesium-137 and/or Cobalt-60 sources
  • With source options, exposure rates are available from 2 uSv/hr to 20 Sv/hr
  • High precision and repeatability assure accurate calibrations with low uncertainty
  • Panoramic radiation field
  • Electronic operation or fully-automated computer control.
  • Computer control provides extensive automation for applications such as ELDRS.
  • Easy to use with an intuitive operator interface.
  • Inherent fail-safe design.
  • Highly reliable
  • Calibration available with traceability to NIST
  • 360° radiation field
  • Rotating turntable
  • Exposure positions at 30, 40, 50, and 60cm

 

  • Dose Rate - 2 uSv/hr (0.2 mR/hr) to 20 Sv/hr (2 mR/hr)
  • Cesium-137 Sources: 0.4 GBq (10.8 mCi) to 65 TBq (1757 Ci)
  • Cobalt-60 Sources: 0.4 GBq (10.8 mCi) to 37 GBq (1 Ci)
  • External exposure rates < 2 uSv/hr (0.20 mR/hr) @ 30cm (11.81”) from the surface
  • Size - 200cm (78.74”) x 200cm (78.74”) x 135cm (53.15”) tall
  • Weight - 400 kg (882 lbs)
  • Power - 120/220 VAC, 50/60 Hz, 1500 watts
  • Rotating or stationary disks for positioning dosimeters in a circular array around irradiator
  • Safety interlock system
  • Video cameras for instrument and room viewing
  • Jigs/fixtures
  • Dosimeter phantoms
  • Laser alignment
  • Temperature, Pressure, Humidity Monitors
  • Calibration equipment & service

Please register with us below in order to download the technical document(s) for the Model DS20 Panoramic Irradiator.

The Model GI-Am241 irradiator is used for testing instruments at low energy. The Am-241 source has an energy at 60 kV as opposed to Cs-137 at 662 kV or Co-60 at 1.2 MeV. 

The Am-241 source capsule is shaped as a disc, similar to a coin, to optimize the dose rate for this low energy gamma emitter. The Model GI-Am241 gamma beam irradiator can hold a single Am-241 source or an array of multiple sources on a  source rod that is raised vertically to lift it out of its shield to the exposed position. 

While the Model GI-AM241 irradiator is offered as a stand alone system, it is typically mounted at the opposite end of our linear positioning system from the primary irradiator system (G10, GC60, etc.) and is controlled by the primary irradiator's control system. For computer controlled systems, selecting the Am-241 source flips the positioning track's reference scale to show the distance from the center of the instrument platform to the center of the Am-241 source.

  • Single source
  • Am-241 source
  • High precision and repeatability assure accurate calibrations with low uncertainty
  • Electronic operation or fully-automated computer control.
  • Easy to use with an intuitive operator interface.
  • Inherent fail-safe design.
  • Highly reliable
  • Calibration available with traceability to NIST
  • Dose Rate - 1 uSv/hr (0.10 mR/hr) to 1 mSv/hr (100 mR/hr)
  • Am-241 Source: 37 GBq to 185 GBq
  • External exposure rates < 2 uSv/hr (0.20 mR/hr) @ 30cm (11.81”) from the surface
  • Size - 30cm (11.81”) x 30cm (11.81”) x 140cm (55.12”) tall
  • Weight - 90 kg (198 lbs)
  • Power - 120/220 VAC, 50/60 Hz, 1000 watts
  • Model T20 precision linear positioning track, manual or automated, 1 to 4 axes
  • Safety interlock system
  • Video cameras for instrument and room viewing
  • Jigs/fixtures
  • Dosimeter phantoms
  • Laser alignment
  • Temperature, Pressure, Humidity Monitors
  • Calibration equipment & service

Please register with us below in order to download the technical document(s) for the Model GI-AM241 Irradiator.

The Model WI90 Well Irradiator provides a vertical radiation beam for quickly calibrating radiation detection instruments. When high instrument throughput is required, the WI-90 gives an easy and quick access to instruments for adjustment, while keeping exposure rates low to personnel. The system comes complete with radiation source, shielded enclosure, source elevator, attenuator, safety interlocks, and control panel.

  • Easy access for rapid instrument calibration
  • Single Cesium-137 source
  • Precision track can position source from 0.6 to 10m from instrument being calibrated
  • With source options, track length, and attenuators, exposure rates are available from 1 uSv/hr to 100 Sv/hr
  • High precision and repeatability assure accurate calibrations with low uncertainty
  • Electronic operation or fully-automated computer control.
  • Computer control provides extensive automation to reduce errors and improve efficiency
  • Easy to use with an intuitive operator interface.
  • Inherent fail-safe design.
  • Highly reliable
  • Calibration available with traceability to NIST
  • Dose Rate - 1 uSv/hr (0.1mR/hr) to 10 Sv/hr (1,000 R/hr)
  • Cesium-137 Source: 4 GBq (108 mCi) to 37 TBq (1,000 Ci)
  • External exposure rates < 2 uSv/hr (0.20 mR/hr) @ 30cm (11.8”) from the surface
  • Size - 50cm (19.69”) x 50cm (19.69”) x 1000cm (393.7”) tall
  • Weight - 300 kg (662 lbs)
  • Power - 120/220 VAC, 50/60 Hz, 1500 watts
  • Attenuators of different thicknesses
  • Safety interlock system
  • Video cameras for instrument and room viewing
  • Jigs/fixtures
  • Temperature, Pressure, Humidity Monitors
  • Calibration equipment & service

Please register with us below in order to download the technical document(s) for the Model WI-90 Well Irradiator.

The Model G100 Teletherapy Level Gamma Beam Irradiator is a therapy-level irradiation system for performing measurements and calibrations.  The G100 replaces several legacy systems which are no longer supported.  The G100 combines the well-known and understood capabilities and features of legacy systems with numerous state-of-the art design upgrades including a horizontal beam for flexible measurement options, pneumatically-actuated source exposure, and a fail-safe, easily maintainable design.

  • Teletherapy quality beam for therapy-level calibrations and measurements
  • Beam aperture and collimator based on well characterized legacy designs
  • Configurable beam centerline height (at the factory)
  • Precision beam exposure timing & control
  • Electronic or fully-automated control
  • Fail-safe design
  • Enhanced 10CFR Part 37 security features
  • Dose Rate -  700 mSv/hr to 500 Sv/hr
  • Isotope: 60Co
  • Maximum Activity: 370 TBq
  • Collimator: Multi-leaf, teletherapy, 0.5cm to 30cm
  • Primary Shielding: Lead
  • External exposure rate < 8 uSv/hr @ 30cm from the surface
  • Size: 800 x 800 x 1800mm tall
  • Weight: 4,000 kg
  • Power Requirements: 120/220V, 50/60Hz, 1,000 watt

 

 

 

 

Please register with us below in order to download the technical document(s) for the Model G100 Teletherapy Level Irradiator.