Abstract
At the Radiation Protection Laboratory of the INFN—Frascati National Laboratories, a new polyallyl diglycol carbonate (PADC) based fast neutron dosimetry system has been established for the routine monitoring of ambient neutron radiation around the 510 MeV e + / e - DA Φ NE collider as well as research activities in the field of neutron dosimetry. The detectors, supplied by Intercast (Parma, Italy), are processed by means of a two-stage chemical etching. The analysis is performed with a new automated reader, developed at the laboratory under the Labview (National Instruments) environment. Taking advantage of a set of automated motion, vision and regulation procedures, this system provides very reproducible, accurate and quick results suitable for both investigation and routine purposes. Moreover, the adoption of a four element configuration combined with a deep study of the background distribution, allows obtaining a minimum detectable ambient dose equivalent as low as 30 μ Sv . This work analyzes the dosimetric performance of the LNF ambient dosemeter as well as the characteristics of the LNF new reading system.
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