Working characteristics of the New Low-Background Laboratory (DULB-4900, Baksan Neutrino Observatory)

Abstract

A concise technical characteristic of a new low-background laboratory DULB-4900 of the BNO INR RAS is presented. The technique and the results of background measurements in the Hall, ordinary box and low-background box are presented. Rn-222 contamination in the laboratory air has been measured by direct detection of gamma-radiation of its daughter Bi-214 distributed over the volume of the low-background box. The results of the data analysis are presented.

5 pages, 6 figures

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• The study of the thermal neutron flux in the deep underground laboratory DULB-4900
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• The origin of the background radioactive isotope Xe-127 in the sample of Xe enriched in Xe-124