Advanced Gamma-Ray Spectrometer (AGRS)
The Advanced Gamma-Ray Spectrometer (AGRS) is an intelligent, self-calibrating gamma-ray spectrometer using large volume NaI(TI) detector arrays. The unit is available in 3 standard configurations:
- AGRS-2: comprises 2x4Liter NaI(Tl) scintillation crystals oriented downwards, and required electronics;
- AGRS-4: comprises 4x4Liter NaI(Tl) scintillation crystals oriented downwards, and required electronics;
- AGRS-5: comprises 4x4Liter NaI(Tl) scintillation crystals oriented downwards, 1x4Liter NaI(Tl) crystal oriented upwards (cosmic/radon detection), and required electronics;
Multiple units can be chained together for larger effective detector volume and detection surface.
The AGRS unit can be easily installed in the aircraft and function independent or can be integrated with PEI’s data acquisition and navigation unit.
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Manufactured by Geotomographie GmbH
Technical Details
Generated wave types: SV
Signal frequencies: Up to 500 Hz (depending on geology and borehole distance)
Operational depth: Up to 100 m
Source length: 1015 mm
Source weight: 6 kg
Cable weight per metre: 377 g
Borehole diameter: 75-100 mm (or larger if spacers are used)
Clamping system: Infatable bladder
Depth indicator: Cable marking every 2 m
Connector: To impulse generator IPG800 or IPG5000
Storage: On drum
Switch box: Switch between two vertical shot directions
