• DOI:10.1093/ptep/ptx083
• Corpus ID: 119221696

First demonstration of emulsion multi-stage shifter for accelerator neutrino experiment in J-PARC T60

@article{Yamada2017FirstDO,
  title={First demonstration of emulsion multi-stage shifter for accelerator neutrino experiment in J-PARC T60},
  author={K. Yamada and Shigeki Aoki and S. Cao and Naruhiro Chikuma and Tsutomu Fukuda and Y. Fukuzawa and Michel Gonin and Tatsuya Hayashino and Y. Hayato and Ayami Hiramoto and Fuminao Hosomi and Katsumi Ishiguro and S. Iori and T. Inoh and Hiroaki Kawahara and H. I. Kim and Nobuko Kitagawa and Taichiro Koga and Ryosuke Komatani and Masahiro Komatsu and Akiyuki Matsushita and Shoji Mikado and A. Minamino and H. Mizusawa and Kunihiro Morishima and Tetsuji Matsuo and T. Matsumoto and Y. Morimoto and Misaki Morishita and K. D. Nakamura and M. Nakamura and Y. Nakamura and Naotaka Naganawa and Toshiyuki Nakano and Tsuyoshi Nakaya and Y. Nakatsuka and Akira Nishio and Satoru Ogawa and Hitoshi Oshima and Benjamin Quilain and Hiroki Rokujo and Osamu Sato and Yoshihiro Seiya and Hiroshi Shibuya and Takuya Shiraishi and Y. Suzuki and Satomi Tada and S. Takahashi and Masahiro Yoshimoto and M. Yokoyama},
  journal={arXiv: Instrumentation and Detectors},
  year={2017}
}

• K. Yamada, S. Aoki, +47 authors M. Yokoyama
• Published 10 March 2017
• Physics
• arXiv: Instrumentation and Detectors

We describe the first ever implementation of an emulsion multi-stage shifter in an accelerator neutrino experiment. The system was installed in the neutrino monitor building in J-PARC as a part of a test experiment T60 and stable operation was maintained for a total of 126.6 days. By applying time information to emulsion films, various results were obtained. Time resolutions of 5.3 to 14.7 s were evaluated in an operation spanning 46.9 days (time resolved numbers of 3.8--1.4$\times10^{5}$). By using timing and spatial information, a reconstruction of coincident events that consisted of high multiplicity events and vertex events, including neutrino events was performed. Emulsion events were matched to events observed by INGRID, one of near detectors of the T2K experiment, with high reliability (98.5\%) and hybrid analysis was established via use of the multi-stage shifter. The results demonstrate that the multi-stage shifter is feasible for use in neutrino experiments.