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Water Cherenkov detector - brief status report -. Kenji Kaneyuki Research Center for Cosmic Neutrinos, ICRR, Univ. of Tokyo. advantage 50kt detector is already working Analysis method and its performance are established It is easy to enlarge detector compare to other one.
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Water Cherenkov detector- brief status report - Kenji Kaneyuki Research Center for Cosmic Neutrinos, ICRR, Univ. of Tokyo
advantage • 50kt detector is already working • Analysis method and its performance are established • It is easy to enlarge detector compare to other one. • Mton class detector are available • A lot of physics topics • proton decay, long baseline, atmospheric, solar, SN • and relic neutrinos Summary of advantage and disadvantage • disadvantage • Low track finding efficiency at high energy • No magnetic field Super beam exp. Key issue is a cost ( photo detector ).
Photo Detector R&D in Japan(Tokyo and KEK) 13inch HPD prototype Aihara’s presentation at the 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam (July/13-14/2006)
Photo Detector R&D Time resolution for single photon Aihara’s presentation at the 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam (July/13-14/2006)
Aihara’s presentation at the 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam (July/13-14/2006)
Aihara’s presentation at the 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam (July/13-14/2006)
Aihara’s presentation at the 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam (July/13-14/2006)
Photo Detector R&D • New photo detector R&D for Mton Water Cherenkov detector on AIL FJ-PPL will start. • We will have a first workshop at KEK on Oct./3rd.
One of options of Mton detctor- T2KK - The 2nd international Workshop on a Far detector in Koria for the J-Parc neutrino beam was held on July/13-14/2006 at SNU. Distance from the target (km) SK/HK 295km Korea ~1000km JPARC 2.5deg.off-axis beam @Kamioka K. Hagiwara Nucl. Phys. Proc. Suppl. 137 84 (2004) Off-axis angle
nm→ne (nm→ne) probability at Kamioka and Korea sin22q13=0.05 • Merit of Korea detector: • larger CP phase effect by a factor of 3 • large energy dependence of P(nmne) vs P(nmne) Kamioka+Korea Better CP phase sensitivity and mass hierarchy Okumura’s talk @ NuFact06
Conclusion • Photo detector R&D goes steadily. 13inch HPD was developed. Readout electronics is under study. • New photo detector R&D for Mton Water Cherenkov detector on FJ-PPL will start. • T2KK is under study as a option of HK.