High-Resolution Gamma Tomography System
High-resolution measurements of void-fraction distributions at high pressure conditions and/or in complex geometry such as fuel are particularly challenging.
Project Description
Within this project we have designed and built a gamma-tomography system for non-intrusive measurements of void-fraction distributions in high pressure fuel bundle mock-ups.
In a tomography system, a source and a detector arc are placed around the object to be measured. Several “projections” of the object are measured at different angles around the object to build a “sinogram”. Then, tomographic algorithms are used to reconstruct the measured object.
In a tomography system, a source and a detector arc are placed around the object to be measured. Several “projections” of the object are measured at different angles around the object to build a “sinogram”. Then, tomographic algorithms are used to reconstruct the measured object.
In-house Gamma-Tomography Characteristics
- 15 Ci gamma source
- 1 mm spatial resolution
- modular built for detector arc and electronics, each module has 8 detectors
- Wi-fi capability => tomography operation, data acquisition and data retrieving can be carried out remotely with a single PC
- 2 energy thresholds per detector channel
- individual gain / bias control for each detector channel SiPM
- detector arc electronics works with any gamma source (Cs-137, Co-60, etc,) as well as for neutron tomography
