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Jérémy Flamanc Product Manager Specialty Germanium CANBERRA Specialty Division [email protected] +33 6-76-49-38-35 (Mobile) +33 3-88-77-43-67 (Office)
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Nuclear Physics experiments
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Synchrotron detectors
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Industrial systems
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New Sealed HPGe probe
AREVA MINING original requirements: u BORE HOLE inspection for Uranium exploration u Rugged, Sealed, Easy to clean u Streamline, all attitude u LN2 free u Turnkey, Mobile & portable, Easy to deploy u High Energy resolution (MDA, mixture)
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Outcome: a harsh environment compatible HPGe
New Sealed HPGe probe
Sealed Housing
HPGe capsule
Front end electronics
Electrical Cooler
Passive cooler
Watertight connector
Industrial composite cable
Comprehensive Acquisition station
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Performances u Relative efficiency : 20% (coaxial HPGe Φ 50mm x L 50mm) u Energy resolutions FWHM: 1,2 keV @ 122keV / 2,2 keV @1332 keV u MDA in water: down to 0,1 Bq /L (depends on background) u Energy range: 50 keV – 10 MeV u Count rate up to 100kcps
Probe mechanical characteristics u Dimensions 80mm x 800 mm u Sealed (no vents) u Weight 10kg u Cable length: up to 100m u Operating temperature up to 35°C u Storage temperature up to 50°C
New Sealed HPGe probe
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Analysis stations
Watertight case version
Flight case version
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How to improve the mobility? u Low cooler power consumtion: 30W u Ultra high vacuum encapsulation of the HPGe detector
• Full thermal cyclings are not required • Increased sensor life time & reliability
New Sealed HPGe probe
Station with a 4h battery
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Présentation CANBERRA Lingolsheim CONFIDENTIEL
Our users needs it for
Dismantling & Decommissioning u Wall, Soil u Collimators for high count rates u Easy to decontaminate
Water contamination u Fresh / sea water u Low MDA
Emergency response u Robotic system u Hand held
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New Sealed HPGe probe
HPGe is the prefered solution when adressing: u High background environment u Mixture of radionuclides u Low MDA / faster counting time u Separation of natural and anthropogenic sources
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Higher efficiency solutions
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Rugged HPGe for higher efficiencies
Design for large crystals u Efficiency up to 175% u Air cooling (Fan) u Or Sealed Version
• Optional External water chiller • Temperature up to 60°C • Contaminated areas
u Compatible and exchangeable with existing portable LN2 dewar
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Even Higher efficiency detectors
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Cluster of largest HPGe crystals u Coincidence to increase the sensitivity: 1300% achievable u SW suite allows calculation of the ground dose u Comprehensive Database: GPS, raw spectra, monitoring
data and more
Extreme efficiencies solutions
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5% 20% 175% 1300%
Summary
EFFICICENY RANGE
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Summary
In situ / outdoor spectrometry with HPGe is possible Energy resolutions similar to lab environments harsh environmental conditions : immersion, bore hole, transportation with cold diode Optimization for mobile use: minimum down time, fast deployement, and easy decontamination, minimal maintenance Custom designs to meet operational footprint constraints The Buidling Blocks developped are applicable to multiple designs