Daya Bay: Goals and Methods
The goal of the Daya Bay nuclear reactor neutrino experiment is to determine sin2θ13 with a sensitivity of ≤0.01.
How to Reach a Precision of 0.01 in Daya Bay?
Increasing Statistics:
1. Use more powerful nuclear reactors.
We hope to accomplish this by measuring deficit in rate and spectral distortion.
2. Utilize larger target mass, hence larger detectors.
Suppress Background:
1. Go deeper underground to gain overburden for reducing cosmogenic background.
2. Use active shield around the target.
Reduce Systematic Uncertainties:
- Reactor-related:
- Detector-related:
1. Optimize baseline for best sensitivity and smaller residual reactor-related errors.
2. Near and far detectors to minimize reactor-related errors.
1. Use “Identical” pairs of detectors to do relative measurement.
2. Comprehensive program in calibration/monitoring of detectors.
So, how do our nuclear reactors and detectors look like?
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