Target Mass Monitoring and Instrumentation in the Daya Bay Antineutrino Detectors

Understand

The Daya Bay experiment measures sin^2 2{\theta}_13 using functionally identical antineutrino detectors located at distances of 300 to 2000 meters from the Daya Bay nuclear power complex.

• Each detector consists of three nested fluid volumes surrounded by photomultiplier tubes.
• These volumes are coupled to overflow tanks on top of the detector to allow for thermal expansion of the liquid.
• Antineutrinos are detected through the inverse beta decay reaction on the proton-rich scintillator target.