New challenging questions in astro-particle physics are opened with the discovery of neu- trino mass and mixing. Low energy solar neutrino spectroscopy plays now a fundamental role in understanding the new physics and the nuclear fusion processes in the sun. A large scale scintillation detector borexino at the Gran Sasso Laboratories (Italy) will soon pursue this goal in real time. In this work, a custom data acquisition system (electronics and software) has been developed together with the offline data processing algorithms. A water Cˇerenkov detector has been installed for cosmogenic background identification, including the tagging of 11C in the energy window of pep neutrinos. With a prototype detector, the in-situ 11C production rate was measured for the first time, resulting in 0.135 ± 0.024[stat] ± 0.014[syst]/d/ton. The detection of the weak spectral contribution of pep neutrinos in borexino was shown to be realistic and will determine uniquely the fundamental solar pp fusion rate.

Towards the detection of low energy solar neutrinos in Borexino : data readout, data reconstruction and background identification [Doctoral thesis] / D. D'Angelo. - Muenchen (Germania) : Technische Universitaet Muenchen, 2006 Mar.

Towards the detection of low energy solar neutrinos in Borexino : data readout, data reconstruction and background identification [Doctoral thesis]

D. D'Angelo
2006-03

Abstract

New challenging questions in astro-particle physics are opened with the discovery of neu- trino mass and mixing. Low energy solar neutrino spectroscopy plays now a fundamental role in understanding the new physics and the nuclear fusion processes in the sun. A large scale scintillation detector borexino at the Gran Sasso Laboratories (Italy) will soon pursue this goal in real time. In this work, a custom data acquisition system (electronics and software) has been developed together with the offline data processing algorithms. A water Cˇerenkov detector has been installed for cosmogenic background identification, including the tagging of 11C in the energy window of pep neutrinos. With a prototype detector, the in-situ 11C production rate was measured for the first time, resulting in 0.135 ± 0.024[stat] ± 0.014[syst]/d/ton. The detection of the weak spectral contribution of pep neutrinos in borexino was shown to be realistic and will determine uniquely the fundamental solar pp fusion rate.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
http://mediatum.ub.tum.de/node?id=603117
Towards the detection of low energy solar neutrinos in Borexino : data readout, data reconstruction and background identification [Doctoral thesis] / D. D'Angelo. - Muenchen (Germania) : Technische Universitaet Muenchen, 2006 Mar.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/227363
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