BAB E Air Monitoring Beacon

The BAB-E fixed beacon is used for continuous monitoring of artificial Alpha and Beta aerosols, in Gamma environments as well as in the presence of natural Radon descendants. It has a double cover that allows it to withstand the most extreme climatic conditions for uninterrupted use outdoors (territorial surveillance, nuclear infrastructures, etc.). The data collected by the BAB-E can be accessed remotely and in real time on the DataEXPERT supervision software.

Features

• Can be used in controlled areas with high gamma background
• Compensation of radon progenies
• Use of standard sources for efficiency controls
• Ruggedized, can be used on dismantling and purification sites
• Available as stationary or mobile version
• Can be connected to a central monitoring network and trigger a general alarm

Technology

• The radioactive dust is deposited by air suction on a filter paper placed in the BAB beacons.
• The suction flow rate is about 5 m3/h (it depends on dustiness and type of filter paper).
• The flow rate is calculated from the depression measured between the filter and the pump. This allows to detect any tear or dust clogging.
• Placed one centimeter above the sample, the detection system is based on two 300 μm thick silicon diodes with a surface of 360 mm2.
• The analog signal from the two diodes is amplified by a preamplifier with an output range of about 30mV/MeV.
• An amplifier increases the signal amplitude to 0.7V/MeV, and the signal is then used to produce the energy spectrum via an amplitude analyzer that encodes information to 512 channels.