Manual calibration system for Daya Bay Reactor Neutrino Experiment
JOURNAL OF INSTRUMENTATION(2013)
Abstract
The Daya Bay Reactor Neutrino Experiment has measured the last unknown neutrino mixing angle, theta(13), to be non-zero at the 7.7 sigma level. This is the most precise measurement to theta(13) to date [1, 2]. To further enhance the understanding of the response of the antineutrino detectors (ADs), a detailed calibration of an AD with the Manual Calibration System (MCS) was undertaken during the summer 2012 shutdown. The MCS is capable of placing a radioactive source with a positional accuracy of 25 mm in R direction, 12 mm in Z axis and 0.5 degrees Phi in F direction. A detailed description of the MCS is presented followed by a summary of its performance in the AD calibration run.
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Key words
Detector alignment and calibration methods (lasers, sources, particle-beams),Large detector systems for particle and astroparticle physics
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