Rate My Professor Masato Takita

Professor Masato Takita is a physicist at The University of Tokyo's Institute for Cosmic Ray Research (ICRR), currently serving as Senior Fellow since April 2025, following his tenure as Professor from November 2016 to March 2025. Earlier positions include Associate Professor at ICRR from 2007 to 2014 and 2001 to 2006, and roles at Osaka University as Assistant Professor from 1990 to 1999. He obtained his PhD in Physics from the Graduate School of Science, The University of Tokyo, in March 1989. Takita's research focuses on high-energy cosmic ray physics and highest-energy cosmic gamma-ray astronomy. He is a principal investigator for the Tibet ASγ experiment, which has pioneered the detection of sub-PeV galactic diffuse gamma rays, shedding light on the origins of galactic cosmic rays. His team employs large-scale air shower arrays with water Cherenkov muon detectors to observe gamma rays beyond 100 TeV. Additional projects include the ALPACA experiment for southern sky observations and contributions to neutrino experiments like Super-Kamiokande and Kamiokande, where he analyzed upward-going muons and atmospheric neutrinos.

Takita has earned major awards for his contributions, including the 2025 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Research Category) for pioneering highest-energy gamma-ray astronomy and investigating galactic cosmic ray origins; the 2023 Koshiba Prize for developing sub-PeV gamma-ray astronomy using water Cherenkov muon detectors; the 2021 67th Nishina Memorial Prize for establishing sub-PeV gamma-ray astronomy; the 2016 Breakthrough Prize in Fundamental Physics as part of the Super-Kamiokande collaboration; the 1999 Asahi Prize for evidence of finite neutrino mass; the 1989 Rossi Prize; and the 1988 Asahi Prize for supernova neutrino detection. Key publications encompass 'Quantitative Constraint on the Contribution of Resolved Gamma-Ray Sources to the Sub-PeV Galactic Diffuse Gamma-Ray Flux Measured by the Tibet ASγ Experiment' (The Astrophysical Journal Letters, 2024), 'Neural networks for separation of cosmic gamma rays and hadronic cosmic rays in air shower observation with a large area surface detector array' (Machine Learning: Science and Technology, 2024), and 'Sensitivity of the large muon detector with the Tibet air-shower array to measure the primary proton spectrum between 40 and 630 TeV' (Progress of Theoretical and Experimental Physics, 2022). He has delivered invited lectures at conferences such as ICHEP2022 and COSPAR2022 on Tibet ASγ results and served as Representative of the Cosmic Ray and Astrophysics Division of the Japan Physical Society (2022-2023).