International workshop NNN2022 was held in Hida city


From 28 to 30 September 2022, the 21st International Workshop on Next generation Nucleon Decay and Neutrino Detectors (NNN2022) took place in person at Hida City Cultural Communication Center in Hida City, Gifu Prefecture, Japan. The NNN workshop has been held almost every year since 1999 in various parts of the world. This is the fourth time it has been held in Japan, following Hamamatsu, Toyama and Kashiwa. We originally planned to hold this workshop in Hida City in 2020, but we postponed it due to the Corona pandemic and finally held it this year. The Institute for Cosmic Ray Research, The University of Tokyo hosted this workshop, and Hida City cooperated as a co-host. This was the first international conference held in Hida City. One hundred and eleven researchers from 10 countries participated in the conference, and 35 oral presentations and 32 poster presentations were made, including progress reports in each research field.


On the first day of the workshop, the opening address was given by Prof. Masato Shiozawa, Director of the Kamioka Observatory, followed by a welcome speech by Mr. Junya Tsuzuku, Mayor of Hida City; “Hida City welcomes this International Conference. The presence of world-class research facilities is a source of great pride for the citizens of Hida. We believe this international conference will create even more pride and further strengthen cooperation between Hida City and research facilities such as Super-Kamiokande in the future. “


Prof. Masato Shiozawa, Director of Kamioka Observatory, delivers opening remarks.


Junya Tsuzuku, Mayor of Hida City


About 30 oral presentations were given.


On the evening of the first day, a poster-style research presentation was held, and a lively discussion took place in front of about 30 posters.


On the final day, Prof. Tsuyoshi Nakaya of Kyoto University summarized the entire workshop, “It was a fruitful meeting where we shared the construction status of the world’s next-generation nucleon decay and neutrino experiments and discussed them in a face-to-face meeting.”


Winners of Best Poster Awards (From left; Mr. Shunsuke Nakanishi, Mr. Aoi Eguchi, Mr. Antonio Jose Portocarrero Yrey) and Prof. Akira Konaka (TRIUMF, the award committee)


On the afternoon of the last day, participants visited the underground experimental facilities, such as Super-Kamiokande and KamLAND, and the construction site of the Hyper-Kamiokande. They saw the actual research sites by themselves and discussed the status of the research.