New high-precision measurement system for electron-positron pairs from sub-GeV/GeV gamma-rays in the emulsion telescope

Yuya Nakamura, Shigeki Aoki, Tomohiro Hayakawa +27

The GRAINE project observes cosmic gamma-rays, using a balloon-borne emulsion-film-based telescope in the sub-GeV/GeV energy band. We reported in our previous balloon experiment in…