Latest nuclear emulsion technology Hiroki Rokujo, Hiroaki Kawahara, Ryosuke Komatani, Misaki Morishita, Toshiyuki Nakano, Naoto Otsuka and Masahiro Yoshimoto EPJ Web Conf., 145 (2017) 19020 Published online: 26 June 2017 DOI: 10.1051/epjconf/201714519020