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Background reduction at DTU Nutech surface gamma laboratory
Nikola Marković1, Per Roos1, Sven Poul Nielsen1
1Technical University of Denmark, Center for Nuclear Technologies, Frederiksborgvej 399, 4000, Roskilde, Denmark.
Abstract:
Sources of background and background variation in a BEGe type HPGe detector located in a surface laboratory were identified. Different strategies for background reduction were applied. A cosmic veto was installed, and optimised using a digital acquisition system in list-mode with time-stamped data. This resulted in the reduction of total background by a factor of 1.4. Thermal and fast neutron fluxes were also calculated. The radon induced background component and its variation were significantly reduced.
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