Systematic errors of reactor neutrino experiments and ideas about new detectors. Yifang Wang Institute of High Energy Physics, Beijing Nov.28, 2003. How big sin 2 2 q 13 is ?. J. Bahcall et al., hep-ph/0305159. M. Maltoni et al., hep-ph/0309130.
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Systematic errors of reactor neutrino experiments and ideas about new detectors
Institute of High Energy Physics, Beijing
J. Bahcall et al., hep-ph/0305159
Sin22q13 ~ 3%, Chooz limit: Sin22q13 < 10%
Can we do better than 1% ???
canceled out exactly
~0.1% @ DA ~ 1.5%
100m is better than 500 m
3000 MWE/3m Water
180 km baseline
0.2-0.5% statistical error
others ~ 10 days calibration
Fe or low acticity concrete
I. target: Gd-loaded scintillator
II. g-ray catcher: normal scintillator
III. Buffer shielding: oil
Need careful MC study
8MeV, Light yield 7000/MeV, QE=20%, QED1=60%,
Buffer=50cm, 100 8” PMT
2· Rg · Rn· t < 0.04/day/module