5 research outputs found
Search for modulations of the solar Be-7 flux in the next-generation neutrino observatory LENA
A next-generation liquid-scintillator detector will be able to perform
high-statistics measurements of the solar neutrino flux. In LENA, solar Be-7
neutrinos are expected to cause 1.7x10^4 electron recoil events per day in a
fiducial volume of 35 kilotons. Based on this signal, a search for periodic
modulations on sub-percent level can be conducted, surpassing the sensitivity
of current detectors by at least a factor of 20. The range of accessible
periods reaches from several minutes, corresponding to modulations induced by
helioseismic g-modes, to tens of years, allowing to study long-term changes in
solar fusion rates.Comment: 15 pages, 9 figure
Production and suppression of [sup 11]C in the solar neutrino experiment Borexino
Cosmogenic C-11 is produced in-situ by atmospheric mons and forms the main background for the measurement of solar pep- and CNO-neutrinos. However, FLUKA simulations show that the majority of C-11 is accompanied by a free neutron in the final state, thus allowing for an efficient tagging method, the so-called Three-Fold Coincidence technique. The technique and its first applications on Borexino data are presented
The next-generation liquid-scintillator neutrino observatory LENA
We propose the liquid-scintillator detector LENA (Low Energy Neutrino
Astronomy) as a next-generation neutrino observatory on the scale of 50 kt. The
outstanding successes of the Borexino and KamLAND experiments demonstrate the
large potential of liquid-scintillator detectors in low-energy neutrino
physics. LENA's physics objectives comprise the observation of astrophysical
and terrestrial neutrino sources as well as the investigation of neutrino
oscillations. In the GeV energy range, the search for proton decay and
long-baseline neutrino oscillation experiments complement the low-energy
program. Based on the considerable expertise present in European and
international research groups, the technical design is sufficiently mature to
allow for an early start of detector realization.Comment: Whitepaper for the LENA low-energy neutrino detector, 67 pages, 32
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