A compact and ergonomic digital radiation source finder
Designed specifically for locating I-125 seeds, the Seedseeker provides the sensitive response needed for the monitoring of low-energy gammas emitted by iodine isotopes.
The meter is turned on-and-off by the trigger on the handle and overcomes many common issues associated with other meters such as excessive weight, cost, and fragility.
Introducing SiPM detectors
The Seedseeker uses a CsI(Tl) Silicone Photomultiplier (SiPM) integrated detector for a quick and sensitive response. SiPMs, being solid-state devices, exhibit resistance to shocks and vibrations resulting from frequent handling by users. They find widespread use in radiation detection and medical imaging systems.
The compact design involves thousands of micron-sized avalanche photodiodes (APD) arranged in a customised array to achieve optimal optical coupling with the Seedseeker’s scintillation crystal. This reduction in size and weight is achieved without compromising counting efficiency.
Dimensions | 170 (H) x 88 (L) x 72 (W) mm |
Mass | 223 g |
Power Requirements | 2 x AA Batteries (1.5 V each) |
Sensitivity | I-125 is approximately 18,500 CPS/MBq at 25 mm, 1,950 CPS/MBq at 100mm, and 250 CPS/MBq at 300 mm |
FWHM Resolution | ~180 mm at 100 mm from source (No collimation) |
Background Count Rate | 2-4 CPS for I-125 |
Detector Operating Voltages | SiPM based detector – 40 V |
Default Discrimination Window Settings | Discrimination Window: 58.6 mV - 330 mV |
Lower and Upper Detection Limits | Upper limit: 50,000 CPS (Over range) |
Detector Energy (Gamma) | Optimised for I-125 (35 keV) |
Documents
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Care-Wise-Seedseeker-EU-Version-1.0
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