Title page for ETD etd-04092010-132651


Type of Document Dissertation
Author Hardy, Steven
URN etd-04092010-132651
Title Measuring the 7Be Neutrino Flux From the Sun: Calibration of the Borexino Solar Neutrino Detector
Degree PhD
Department Physics
Advisory Committee
Advisor Name Title
Vogelaar, Robert Bruce Committee Chair
Pitt, Mark L. Committee Member
Raghavan, Ramaswamy Committee Member
Takeuchi, Tatsu Committee Member
Keywords
  • source development
  • calibration
  • neutrino physics
Date of Defense 2010-04-02
Availability unrestricted
Abstract
The Borexino solar neutrino detector is a real-time liquid scintillator detector designed to

measure sub-MeV neutrinos. With its unprecedented level of radio-purity, Borexino is poised

to provide the most precise measurements to-date of solar neutrino and geo-antineutrino

fluxes.

However, in order to reduce the systematic errors to sub-5% levels, the detector must be care-

fully calibrated to understand, among other things, the position and energy reconstructions.

To that end, the Virginia Tech component of the Borexino collaboration has constructed a

system for deploying and locating calibration sources within the detector. The system was

used in four separate calibration campaigns and deployed numerous sources in almost 300

locations throughout the detector. The data from the calibrations have already resulted in

the reduction of several sources of systematic error by a factor of two or more.

With the results from the calibration, the Borexino detector has entered a new era of low-

energy, high-precision, neutrino detection.

This work was supported by NSF Grant 0802114

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