Performance of an emulsion telescope for gamma-ray observations in the GRAINE2018 balloon-borne experiment

Yuya Nakamura, Shigeki Aoki, Atsushi Iyono, Ayaka Karasuno, Kohichi Kodama, Ryosuke Komatani, Masahiro Komatsu, Masahiro Komiyama, Kenji Kuretsubo, Toshitsugu Marushima, Syota Matsuda, Kunihiro Morishima, Misaki Morishita, Naotaka Naganawa, Mitsuhiro Nakamura, Motoya Nakamura, Takafumi Nakamura, Noboru Nakano, Toshiyuki Nakano, Akira Nishio, Miyuki Oda, Hiroki Rokujo, Osamu Sato, Kou Sugimura, Atsumu Suzuki, Satoru Takahashi, Mayu Torii, Saya Yamamoto, Masahiro Yoshimoto

The GRAINE project is aimed at the precise observation of astronomical gamma-ray sources in the energy range of 10 MeV to 100 GeV using a balloon-borne telescope utilizing a nuclear emulsion. In 2018, the third balloon experiment was carried out as a demonstration of the detection of the brightest known astronomical gamma-ray source, the Vela pulsar, with an aperture area of 0.38 m2. 

Progress of Theoretical and Experimental Physics,

Oxford University Press

volume 2021

Issue 12

123H02

DOI: 10.1093/ptep/ptab148