Performance of a 5 mm CdTe Timepix3 Detector for Compton Imaging
Author Information
Author(s): Useche Parra Juan S., Roque Gerardo, Schütz Michael K., Fiederle Michael, Procz Simon
Primary Institution: Freiburg Materials Research Center, Albert-Ludwigs-Universität Freiburg, Germany
Hypothesis
Can a 5 mm CdTe Timepix3 detector effectively classify radioactive waste in nuclear decommissioning?
Conclusion
The 5 mm CdTe Timepix3 detector can accurately locate radiation hotspots with a resolution of approximately 51 cm.
Supporting Evidence
- The detector achieved an energy resolution of 16.3 keV for the 137Cs photopeak.
- The electron mobility–lifetime product was estimated to be (1.2 ± 0.1) × 10−3 cm2V−1.
- Two linear regions of resistivity were identified, with values of ρI=(5.8±0.2) GΩ cm and ρII=(4.1±0.1) GΩ cm.
Takeaway
This study shows that a special detector can help find radioactive waste quickly and accurately, which is important for safely shutting down nuclear power plants.
Methodology
The study involved characterizing the detector's performance, including its electron mobility, energy resolution, and ability to locate radiation sources.
Limitations
The detector's performance may be affected by charge sharing and crystal defects, which can impact energy resolution and signal collection.
Digital Object Identifier (DOI)
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