Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 600, Issue 3, Pages 568-593Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2008.11.076
Keywords
Solar neutrino; Low background detectors; Liquid scintillators
Categories
Funding
- INFN (Italy)
- NSF (USA)
- BMBF
- DFG
- MPG (Germany)
- Rosnauka (Russia)
- MNiSW (Poland)
- Laboratori Nazionali del Gran Sasso
- EU [RII3-CT-2004-506222]
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Borexino, a large volume detector for low energy neutrino spectroscopy, is currently running underground at the Laboratori Nazionali del Gran Sasso, Italy. The main goal of the experiment is the real-time measurement of sub-MeV solar neutrinos, and particularly of the monoenergetic (862 keV) Be-7 electron capture neutrinos, via neutrino-electron scattering in an ultra-pure liquid scintillator. This paper is mostly devoted to the description of the detector structure, the photomultipliers, the electronics, and the trigger and calibration systems. The real performance of the detector, which always meets, and sometimes exceeds, design expectations, is also shown. Some important aspects of the Borexino project, i.e. the fluid handling plants, the purification techniques and the filling procedures, are not covered in this paper and are, or will be, published elsewhere (see Introduction and Bibliography). (C) 2008 Elsevier B.V. All rights reserved.
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