GT-40/GT-40S Multipurpose Gamma-Ray Spectrometer Ancestors: GS-256 by Geofyzika Brno 1975 GR-256 by Exploranium Canada 1977 GR-320 by Exploranium

Transcription

1 GT-40/GT-40S Multipurpose Gamma-Ray Spectrometer Ancestors: GS-256 by Geofyzika Brno 1975 GR-256 by Exploranium Canada 1977 GR-320 by Exploranium Canada

2 What is common on the current market Handheld Spectrometer for Gamma-Ray NaI/Tl 3x3 or 2x2 BGO Battery powered Methods for NORM Radionuclides Assay 1024 channels analyser (MCA) 2

3 What is new Single unit with detector and all electronic build in one case Fully digital spectrometer Spectra free of differential nonlinearity 1: Full spectra linearization during conversion; Energy calibration 3 kev / channel Proportional gain compensation on backstage using natural BG spectral pattern Color trans reflective display the more light the better readability Powerful CPU with embedded Linux TCP/IP WLAN GPS build in the unit Voice recorder 3

4 What is unique Math methods for advanced ASSAY evaluation of activities using least square fitting of spectral shape Very high sensitivity and dynamic range and minimal components crosstalk (20 Bq/kg Cs-137 on 400 ppm U) High Accuracy Multiple measurement calibrations - Methods Removable lead collimator GT-40S Easy integration in automated processes (Sample changers, position control etc.) 4

5 Why GT-40 / GT-40S One unit for plenty of application All in one powerful computer and gamma-ray detector Sensitive search Data Recorder with new Browser Worldwide access via internet remote maintenance Easy remote operation Team work with other GT-40S Applications NORM Field Spectroscopy - Man-made contamination - Core logging - Construction Building Materials control - Easy Lab Unit - Remote station - Industry 5

6 NORM in Geo ASSAY of K, U and Th in various geometries (infinite area, intrusions in outcrops, boreholes, caves Combination of K, U, Th assay with surface contamination measurement (Cs-137 or other nuclides in Bq/m 2 Chernobyl, Fukushima) Determination of ratio between U and Ra User adjustable formula for traditional Values and units e.g. eu, eth, K/U.. Applications Exploration - Mineralogy - Petrophysics - Mining - Building industry 6

7 Man-made contamination/environment Targeting of Radioactive Sources Nuclide Identification including Categories and Intensities Activity evaluation in various units (Bq, Ci, volume, mass or area activities) Long term monitoring in predefined tasks for permanent surveillance Applications Cleaning of contaminated areas or technologies - Waste water management - Long term local background monitoring - Waste deposits - Land contamination Screening - Traceing methods 7

8 Core logging Adaptable in variety of shieldings Internal collimator for higher resolution Calibrations for different core diameters K, U, Th response API, Total or Dose Rate Automated depth control for faster measurement Applications - Stratigraphy - Mineralogy - Oil and Gas - Mining 8

9 Construction Building Materials Certification Activity Index, Gamma Index, Radon Index Buildings sanitation Applications Sick Houses monitoring Raw Material Certification Construction Materials Defectoscopy Exploatation strategy 9

10 Lab Applications and Experimental Lab Kit (GT-40 with desktop shielding and calibration set) for High sensitivity measurement Short measuring times Minimal Operation costs (No liquid nitrogen) Up six different Radioelements analyse and activity evaluation in mixtures per method Capable to identify over 150 gamma ray emitting nuclides Evaluation algorithm certified Suits for routine measurements Applications -Food contamination -Health physics contamination control -Construction material (Slag, Dust) -Metal products -Experiments or Studies based on Monitoring -of radioactive Markers 10

11 Remote monitoring stations Long term spectral analysis Sensitive dose rate monitors Pre warning points Remote movable receptors in Wi-Fi or GSM network Applications - External Monitoring of Nuclear Power plants or facilities - Long term monitoring of deposits - Monitors for illicit traficking 11

12 Industrial Applications Control of processing using tracers Leakage monitoring Slag, scum monitoring Quality check of materials on entry Product monitoring and certification Applications - Metalurgy - Rafineries - Chemistry - Pipelines 12

13 GT-40 Working Modes Scintillometer Profile recording x scale synchronised with actual time Advanced profile browser - Rewind and zoom function - Browse function accessible any time without interrupting current recording (Search function switched on backstage) Static of Float Background level for Alarms Dose rate and Dose Indication Acoustic indication of Exposure rate 13

14 GT-40 Working Modes Gamma Ray Spectrometer Full Digital, sampling frequency 40 MHz Energy range 15 kev 3 MeV Pileup rejector proportional pulse shape control Spectrum linearization, high throughput Advanced Gain shift compensation (operation range 15 kev 3.5 MeV) Comfortable spectrum browser Y scaling, moving cursor and zooming ASSAY results screen preliminary results update every 30 seconds Nuclide Identification screen list of peaks found and amplitudes 14

15 GT-40 Working Modes Gamma Ray Spectrometer for Core Measurement Core identification interface with automated depth counter for faster processing Editable formula for API or other units 15

16 GT-40 methods Maximum 6 components (elements) Space for 6 selectable methods (calibrations) Methods upgradeable from PC database incl cal. spectra User customized calibrations w/o sw change requirement 16

17 GT-40 methods Virtual Components Gate to using special formulas API AI Activity Index GI Gamma Index User Defined 17

18 GT-40 methods Calibration spectra archived in the unit. Automated recalibration prior every measurement allows changing measurement circumstances any time. For example re selection of analysed parts of spectra ROI. Elements can be analysed from whole spectrum or its parts ROIs (signal to noise ratio). 18

19 GT-40 methods New Measurement Methods can be assembled from archived spectra. Each Method setup is exportable to a PC => simple unit re calibration from PC database. Number of components in a method can be changed any time (ADD componet or REMOVE) 19

20 MCA performance Uniformity of spectra of two different units = key to team work of multiple units 20

21 Concentration [kbq/m2] Detection performance Least Detectable Activities of Cs 137 and Cs 134 in soil in kbq/m 2 for various measurement times GT-40 Least Detection Concentrations 1,00 0,90 0,89 0,80 0,70 0,60 0,50 0,46 0,51 0,40 Cs-137 0,40 0,30 0,20 0,27 0,21 0,28 0,15 0,23 0,12 Cs-134 0,10 0, Measuring time [s] 21

22 Communication Maintenance Worldwide access to the unit via internet. Comfortable SW upgrade Performance check and service Implementation of new measurement methods Remote operation measurement and monitoring Cooperation with the other devices Direct control of sample changers, pumps or valves 22

23 Spectrum Browser Movable Cursor for inspection of each channel Zoom function for detailed look Y Axis scalable 23

24 Joystick operation Five buttons directions UP, DOWN, LEFT and RIGHT. OK as ENTER Menu interface with simple navigation - expected buttons are illuminated 24

25 Software Solution SQL DATABASE for data and logs in the unit Build in Browser for Results, Spectra and Logs Support for instruments setup Remote Control Tool Plug in ready Detailed Logs for diagnostic 25

26 Where you can find us Since 2006 we manufactured and distributed 6000 instruments deployed overall the world. Our biggest customers are in Canada, Australia and Brazil. Instruments work in polar areas as well as in tropical forests in Africa. Our units helps in driest deserts in Saudi and Australia. You can find them 1500 m below surface or flying m on planes. We are proud we are helping you. GEORADIS s.r.o. Novomoravanska Brno Czech Republic Europe Georadis s.r.o