Abstract
The Daya Bay reactor neutrino experiment is designed to measure the last unknown neutrino mixing angle θ13 with a sensitivity of sin2 (2θ13) <0.01 through a measurement of the relative rates and energy spectra of reactor antineutrinos at different baselines. Eight identical antineutrino detectors (ADs) will be installed in three experimental halls. Two ADs have been installed in a water pool with at least 2.5m water shielding in the first experimental hall, Daya Bay near hall. The Daya Bay near hall is 360m away from the Daya Bay reactors and has an overburden of 98m of rock. The water pool is divided into inner and outer parts to serve as a two-layer Cherenkov detector with equipped PMTs. Resistive Plate Chambers (RPCs) cover the water pool as additional Muon tagging. We will describe the design, construction, commissioning and preliminary performance of the Daya Bay Muon detector.
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