- High sensitivity image intensifier
- User selectable gain
- Customizable to accommodate any brand and model of smart phone
- Digital and analog module options available
- Digital module comes with rechargeable battery pack
Features
Applications
- Verification of spent nuclear fuel
- Identification of irradiated items and non-irradiated items
Instrument Includes
- UV zoom lens
- UV bandpass filter
- Intensifier
- Digital and/or Analog viewing module
- Neck strap
- Transport case
The Cerenkov Radiation Inspection System II (CRIS II) is the newest generation CRIS device designed to view Cerenkov light produced by spent fuel assemblies stored in fuel ponds.
It uses an image intensifier designed to amplify the ultra-violet (UV) portion of the Cerenkov light generated by spent nuclear fuel. The lower detection limit of the instrument is determined by the amount of Cerenkov light generated by the spent fuel, which in turn is determined by the combination of burn-up and cooling time of the assembly.
This instrument is only sensitive to the 290-340 nm region of the spectrum, allowing it to be used under most normal lighting conditions found in a spent fuel pond.
The CRIS II can be easily customized to accept different lenses depending on the needs of the application. For the application of Cerenkov Light Imaging, shorter focal lengths are typically used for larger PWR fuel assemblies or wide-field viewing of the pond. Longer focal lengths are used for viewing smaller BWR fuels or detailed viewing of Cerenkov characteristics of individual assemblies.
A custom designed 80-200 mm UV Zoom lens developed by Channel Systems is available which has been specially designed for this application. The UV Zoom lens is optically fast to enable verification of fuels with low Cerenkov light production. The wide-angle view (80 mm) allows for viewing multiple fuel assemblies at once and the telephoto setting (200 mm) allows for detailed examination of an assembly, all without having to change the lens.