Application for nuclear sample mesurements
-
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
-
In Universities, research centers, nuclear medicine
-
dustry- and nuclear technology
-
Dismantling, consulting, waste management
-
Environmental, health and food surveillance and laboratories
-
Civil defense, emergency response, border, safety, security and access control
System description
Ultra-Low-Background HPGe γ-Detectors:
-
Large coaxial crystals, Efficiency: from 60 % up to 150 %
-
Large planar crystals, Diameter: 5, 7, 8, ... cm; Thickness: 1.5, 2, 3, .. cm
-
Ultra low background (ULB) version
Sample Geometry
-
Large coaxial crystals, Petrie shells, marinelli beaker and big bottles
-
Large planar crystals, Petrie shells, point & filter sources, ...
Spectrometry Electronics, Hardware and Software
-
State-of-the-Art digital spectrometry electronic
-
High performance data acquisition system
-
Latest analysis software solutions
ULB Sandwich Shielding Design
-
Excellent passive sandwich lead/Cu shield for photon absorptions
-
Highly efficient shield for secondary neutron reduction
-
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
-
LB/ULB-lead + PE(B) + Cu + N2 layers
Anti Cosmic Veto Shield
-
Scintillation or gas detectors
Anti-Cosmic Electronic
-
digital
-
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).