JINST Instrumentation Theses Archive
Ph.D. degree thesis
Maria Elena Monzani
Supervisor: Hervé de Kerret
Characterization and calibration of the Borexino detector for solar and supernova neutrinos
In this thesis, Borexino has been characterized and calibrated over a wide energy range, for the detection of neutrinos from the different sources. The quality of the Borexino liquid scintillator has been studied by means of the detector prototype (CTF): several purification methods have been tested on the scintillator, with the aim to demonstrate the possibility to reach the extremely low radioactivity levels required for physics.
The Borexino read-out system has been completed and fully tested: the behaviour of the read-out chain was studied in realistic conditions, showing very good performances. A finalization work was performed on the different sub-systems, including the photomultipliers and their calibration system, the electronics and the Data Acquisition Software.
The energy and position reconstruction capabilities of the detector have been evaluated, demonstrating that the system is ready and operational for data taking. An additional electronics chain has been installed, finalized and tested, with the specific aim to explore the high energy range up to the 10 MeV region and beyond (mainly for Supernova neutrino detection).
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