Measurement of the neutron background at the Canfranc Underground Laboratory LSC

D. Jordan, J. L. Tain, A. Algora, J. Agramunt, C. Domingo-Pardo, M. B. Gomez-Hornillos, R. Caballero-Folch, G. Cortés, D. Cano-Ott, E. Mendoza, I. Bandac, A. Bettini, L. M. Fraile, C. Domingo

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Abstract

The energy distribution of the neutron background was measured for the first time at Hall A of the Canfranc Underground Laboratory. For this purpose we used a novel approach based on the combination of the information obtained with six large high-pressure 3He proportional counters embedded in individual polyethylene blocks of different size. In this way not only the integral value but also the flux distribution as a function of neutron energy was determined in the range from 1 eV to 10 MeV. This information is of importance because different underground experiments show different neutron background energy dependence. The high sensitivity of the setup allowed to measure a neutron flux level which is about four orders of magnitude smaller that the neutron background at sea level. The integral value obtained is ΦHall A=(3.44±0.35)×10-6 cm-2 s-1.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalAstroparticle Physics
Volume42
DOIs
Publication statusPublished - Jan 1 2013

Keywords

  • Neutron background
  • Underground physics

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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    Jordan, D., Tain, J. L., Algora, A., Agramunt, J., Domingo-Pardo, C., Gomez-Hornillos, M. B., Caballero-Folch, R., Cortés, G., Cano-Ott, D., Mendoza, E., Bandac, I., Bettini, A., Fraile, L. M., & Domingo, C. (2013). Measurement of the neutron background at the Canfranc Underground Laboratory LSC. Astroparticle Physics, 42, 1-6. https://doi.org/10.1016/j.astropartphys.2012.11.007