Application for nuclear sample mesurements
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Ultra low-level background in vitro -
γ-spectrometers (ULB) are designed for
the direct assessment of extremely low
sample activities (contaminations). -
The concept and performance of our ULB spectrometers are designed for lowest limit of detection using the comfort of a ground level laboratory with fast and easy sample change compared to undergraund labporatories.
In radiation protection for national & international institudes and industry
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In Universities, research centers, nuclear medicine
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dustry- and nuclear technology
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Dismantling, consulting, waste management
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Environmental, health and food surveillance and laboratories
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Civil defense, emergency response, border, safety, security and access control
System description
Ultra-Low-Background HPGe γ-Detectors:
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Large coaxial crystals, Efficiency: from 60 % up to 150 %
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Large planar crystals, Diameter: 5, 7, 8, ... cm; Thickness: 1.5, 2, 3, .. cm
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Ultra low background (ULB) version
Sample Geometry
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Large coaxial crystals, Petrie shells, marinelli beaker and big bottles
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Large planar crystals, Petrie shells, point & filter sources, ...
Spectrometry Electronics, Hardware and Software
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State-of-the-Art digital spectrometry electronic
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High performance data acquisition system
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Latest analysis software solutions
ULB Sandwich Shielding Design
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Excellent passive sandwich lead/Cu shield for photon absorptions
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Highly efficient shield for secondary neutron reduction
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State-of-the–Art veto-shield to separate cosmic particles
(1) outdoor, (2) + measurement dugout,
(3) + iron castle, (4) + passive detector shielding,
(5) + active detector shielding (veto)
Veto adjustment
Effectiveness of the shielding modules
Passive Front Loading Lead Shield
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LB/ULB-lead + PE(B) + Cu + N2 layers
Anti Cosmic Veto Shield
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Scintillation or gas detectors
Anti-Cosmic Electronic
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digital
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analogue
Data Evaluation Software
TIME IS MONEY!
As an example of minimum detectable activity (MDA), the CTBTO laboratory criterion of 24 mBq Ba-140 (in 7 days measuring time) will be achieved with our design of ULB gamma -spectrometer systems installed on ground level laboratories in approximate 1.5 days (black line and dots).
