A side-by-side comparison of Daya Bay antineutrino detectors
Daya Bay Collaboration: F. P. An, Q. An, J. Z. Bai, A. B. Balantekin,, H. R. Band, W. Beriguete, M. Bishai, S. Blyth, R. L. Brown, G. F. Cao, J., Cao, R. Carr, J. F. Chang, Y. Chang, C. Chasman, H. S. Chen, S. J. Chen, S., M. Chen, X. C. Chen, X. H. Chen, X. S. Chen, Y. Chen
TL;DR
This paper reports on the construction, commissioning, and comparison of two identical antineutrino detectors at the Daya Bay experiment, demonstrating their functional similarity and systematic uncertainties relevant for precise neutrino measurements.
Contribution
It provides a detailed comparison of two functionally identical detectors, confirming their performance and systematic uncertainties meet experimental requirements.
Findings
Detectors are functionally identical
Systematic uncertainties exceed requirements
Data shows consistent detector performance
Abstract
The Daya Bay Reactor Neutrino Experiment is designed to determine precisely the neutrino mixing angle with a sensitivity better than 0.01 in the parameter sin at the 90% confidence level. To achieve this goal, the collaboration will build eight functionally identical antineutrino detectors. The first two detectors have been constructed, installed and commissioned in Experimental Hall 1, with steady data-taking beginning September 23, 2011. A comparison of the data collected over the subsequent three months indicates that the detectors are functionally identical, and that detector-related systematic uncertainties exceed requirements.
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