Hyper-Kamiokande & Tokai to Hyper-K detector in Korea
The Hyper-Kamiokande(HK) detector consists of a megaton scale water tank and ultra high sensitivity photosensors. The Hyper-Kamiokande detector is both a “microscope,” used to observe elementary particles, and also a “telescope” for observing the Sun and supernovas, using neutrinos. The Hyper-Kamiokande project has an extremely rich physics portfolio that spans from the study of the CP violation in the leptonic sector and neutrino mixing parameters to proton decay, atmospheric neutrinos and neutrinos from astronomical origin. It is supported by both the HEP and Cosmic Ray communities.
A strong interest in the HKK, the second HK detector at the 2nd oscillation maximum in Korea, came out of HK international collaborators to carry out the “Tokai to Hyper-K detector in Korea(T2HKK)” experiment using neutrino beam from J-PARC in Tokai, Japan. Several studies show that the T2HKK will greatly enhance the sensitivities for the measurements of neutrino mass ordering and CP violation phase. A working group of T2HKK was officially formed in the HK collaboration. Many international HK collaborators including Japanese physicists seem quite interested in the T2HKK.