Study of 1 Megaton water Cherenkov detectors for the future proton decay search
نویسنده
چکیده
The sensitivity of a possible future 1 Megaton water Cherenkov detector for proton decay searches was studied. For p e π0 decay mode, the detection efficiency and the number of atmospheric neutrino backgrounds were estimated by using a detailed Monte Carlo simulation program. Moreover, their dependence on the number density of the photomultiplier tube (PMT) was investigated. With the PMT density of the Super-Kamiokande detector (2 PMT/m2, 40% photocathode coverage), we will reach to 1 5 1035 years partial lifetime limit at 90% confidence level by 10 years livetime of the detector (104 kton year exposure). With a 1/4 (1/9) PMT density, the sensitivity for p e π0 mode is decreased to 1 1035 years (7 1034 years).
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