Speaker
Description
Nuclear emulsion detectors have played an important role in the history of cosmic-ray and high-energy physics experiments, contributing to landmark discoveries such as the pion and the tau neutrino. Building on this long tradition, the NINJA collaboration has developed dedicated nuclear emulsion techniques to perform precision measurements of neutrino–nucleus interactions in the energy range from several hundred MeV to a few GeV. A series of neutrino–nucleus interaction measurements has been conducted using emulsion-based detectors with water and iron targets in the near detector hall of the T2K experiment at J-PARC. The emulsion detector is suitable for precision measurements of charged particles produced in neutrino interactions with a low momentum threshold, especially low momentum protons as low as 200 MeV/c, thanks to its thin-layered structure and sub-μm spatial resolution. In this talk, we will introduce the nuclear emulsion detection techniques developed for the NINJA experiment and present recent results and the current status of neutrino–nucleus interaction measurements with NINJA.