Advanced Gammaray Spectrometer
The AGRS gammaray spectrometers are widely used in geological and geophysical exploration and mapping as well as in environmental and nuclear surveillance.
Individual and independent detector processing provides real time gain and linearity correction. PEI's unique system stabilization algorithm makes the AGRS fully automated and self stabilizing on natural radio-active elements. This eliminates the requirement for regular and time consuming system checks and recalibration and assures accurate and reliable gammaray measurements.
Specially developed software algorithms provide results in absolute units of contamination and dosage automatically corrected from acquisition altitude to ground level equivalents. Individual crystal detector signal processing provides an accurate control over each contributing sensor providing the user with the best possible spectra alignment for the complete system. New design techniques for the peak detection electronics almost completely eliminates 'pulse pile up' and 'Dead Time' effects. 
An added benefit is that each detector and/or PMT in both of these systems may be easily replaced in the field by the user. An Ethernet (LAN) communications protocol permits them to be connected to any “PC” compatible computer system running Windows-XP. All of the dedicated electronics modules are housed within the detector containers. By virtue of Pico Envirotec’s proprietary applicaion software, any personal computer may be transformed into a sophisticated Gamma spectrum analyzer.
Individual, independent, detector processing (each detector has its own spectrometer processor) allows for real time gain and linearity corrections. Pico Envirotec’s ongoing research into system stabilization algorithms permits the AGRS spectrometers to be fully automated and self stabilizing on natural radioactive elements. This eliminates the requirement for regular, time consuming, and frequent system checking and recalibration by the user. Furthermore it provides excellent accuracy and reliability of the gamma measurements. AGRS MAIN features: - Energy detection range 20 KeV to 3 MeV.
- 256 / 512 / 1024 channels
- Output is fully linearized and the Poisson Distribution is not affected
- Individual detector processing
- Real-time stabilization on natu-ral radioactive elements.
- Extremely wide dynamic range: up to 250,000 cps per detector.
- Insignificant Dead Time
- Individual detector Acquisition and Live time is provided.
- Stabilization time of less than 40 seconds on the ground
- All data acquisition is accom-plished via Ethernet, which eliminates bandwidth problems and permits remote monitoring and trouble shooting.
- Selectable sampling rates from 10 Hz to 0.1 Hz
- High level of self-diagnostics
- Automatic HV calibration and linearization based on natural radioactive elements (radioactive sources are NOT required). This permits field replacement of NaI(TI) detectors and/or photomultiplier tubes.
- GPS connectivity & synchroniza-tion
- input power: 10 to 35 VDC
- HV and analog gain digitally controlled by 16-bit D/A con-verter
- 14-bit A/D converter - 80 MHz FPGA master clock
In addition to the full spectra, up to 8 special windows (Regions of Interest) may be collected and recorded along with the status of of each detector.
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