Reactor antineutrino background at Gran Sasso

Details Reactor antineutrino background at Gran Sasso Reactor antineutrino background at Gran Sasso

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ncimc...9..636l&link_type=abstract

(Symposium on Underground Physics, 1st, Saint Vincent, Italy, Apr. 25-28, 1985) Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol.

Physics

1

Antineutrinos, Background Radiation, Cosmic Rays, Neutrinos, Nuclear Power Reactors, Radiation Counters, Underground Structures, Elastic Scattering, Scintillation Counters, Solar Neutrinos, Supernovae

Scientific paper

The flux of electron antineutrinos arriving at the Gran Sasso Laboratory underground solar-neutrino detector from the world-total 345 operating nuclear power reactors (total capacity 283 GWe) is estimated theoretically, extending and refining the analysis of Lagage (1985). The total is found to be about 450,000/sq cm s, of which about two thirds originate in reactors in Italy, France, and the FRG. From this result it is inferred that reactor electron antineutrinos become predominant below about 4 MeV when searching for elastic-coherent-scattering of high-energy solar neutrionos and below 8 MeV for diffuse-solar-neutrino background measurements, and that the high-energy tail of the earth antineutrino flux (1-3 MeV) cannot be detected. It is concluded that great efforts to lower the energy threshold of detectors may not be justified.

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