Monte Carlo simulation of environmental background sources of a HPGe detector operating in underground laboratory
The overlying rock of underground laboratories provides excellent radiation shielding necessary for many experiments searching for extremely rare nuclear and astroparticle events. Monte Carlo simulations of HPGe detector background and attenuation of gamma-ray fluxes with different shielding configurations were carried out for an underground laboratory. It has been found that even a small radioactive contamination of the shielding material may increase gamma-ray fluxes in underground laboratory by several orders of magnitude.
KeywordsGamma-ray spectrometry Background Monte Carlo simulation Underground laboratory
The authors are thankful to Prof. F. Piquemal and Dr. M. Chauveau for initiating simulation studies for the SuperNEMO experiment, and for valuable guidance and suggestions. This work was supported by the Slovak Research and Development Agency under the contract No. APVV-15-0576 and APVV-15-0636, and by the EU Research and Development Operational Program funded by the ERDF (Projects No. 26240120012, 26240120026 and 26240220004).
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