Speaker: Dr. Takeshi Nakadaira
(IPNS, High Energy Accelerator Research Organization(KEK))
Topic:
The J-PARC high-intensity neutrino beam
Abstract:
Accelerator-based Long base-line neutrino experiments can measure the neutrino oscillations precisely, and can search for CP violation in lepton sector by comparing the neutrino beam measurement and the anti-neutrino beam measurement. The high intensity neutrino beam is essential for CP violation search. The J-PARC neutrino facility has the potential to provides Mega-watt class neutrino beam for the long base-line experiments. The latest results of the current J-PARC neutrino experiment, T2K, may be the hint of the large CP violation in lepton sector. The J-PARC accelerator and the neutrino beam facility will be upgraded aiming 1.3MW neutrino beam to enhance the sensitivity of CP violation search by T2K and the future project Hyper-K. The contents and the prospects of this improvement plans to realize the world highest neutrino intensity will be introduced.
Speaker:Dr. Yoshitaka Itow
( ISEE/KMI, Nagoya University)
Topic:
The Hyper-Kamiokande project
Abstract:
Hyper-Kamiokande (Hyper-K), a straightforward extension of Super-Kamiokande, is expected to provide significant progress and new discoveries in particle and astroparticle physics. This will be realized by one order of magnitude increase in detector mass, improvements to photon-detection systems, and an envisioned J-PARC megawatt class neutrino beam. These improvements are expected to substantially enhance all ongoing physics programs at Super-Kamiokande and T2K. The J-PARC neutrino beam will provide accurate measurement of neutrino oscillations, targeting five-sigma discovery of CP violation in the lepton sector. As for the nucleon decay search, the sensitivity to the partial lifetime of proton decay p -> e + pi0 exceeds 10^35 years. The astrophysical neutrino program involves precise measurement of solar neutrino oscillations, matter effect, supernova burst, supernova relic neutrinos, and other astronomical sources. Hyper-K is a priority project listed in the Road Map 2017 of the Japanese Ministry of Education, Culture, Sports, Science and Technology. Herein, we present recent project status updates and milestones, i.e., construction begins in 2020 and commissioning begins in 2027.