Author/Authors :
Jordan، نويسنده , , D. and Tain، نويسنده , , J.L. and Algora، نويسنده , , A. and Agramunt، نويسنده , , J. and Domingo-Pardo، نويسنده , , C. and Gomez-Hornillos، نويسنده , , M.B. and Caballero-Folch، نويسنده , , R. M. Cortes، نويسنده , , G. and Cano-Ott، نويسنده , , D. Gonzalez-Mendoza، نويسنده , , E. and Bandac، نويسنده , , I. and Bettini، نويسنده , , A. and Fraile، نويسنده , , L.M. and Domingo، نويسنده , , C.، نويسنده ,
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 Φ Hall A = ( 3.44 ± 0.35 ) × 10 - 6 cm−2 s−1.
