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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…
First demonstration of gamma-ray imaging using balloon-borne emulsion telescope
Hiroki Rokujo, Shigeki Aoki, Kaname Hamada +30
We promote the precise gamma-ray observation project Gamma-Ray Astro-Imager with Nuclear Emulsion (GRAINE), which uses balloon-borne emulsion gamma-ray telescopes. The emulsion tel…
NEWS: Nuclear Emulsions for WIMP Search
A. Aleksandrov, A. Anokhina, T. Asada +56
Nowadays there is compelling evidence for the existence of dark matter in the Universe. A general consensus has been expressed on the need for a directional sensitive detector to c…
Balloon-borne gamma-ray telescope with nuclear emulsion : overview and status
Shigeki Aoki, Tsutomu Fukuda, Kaname Hamada +28
Detecting the first electron pairs with nuclear emulsion allows a precise measurement of the direction of incident gamma-rays as well as their polarization. With recent innovations…
R&D Status of Nuclear Emulsion For Directional Dark Matter Search
T. Naka, M. Kimura, M. Nakamura +5
In this study, we are doing R&D for directional dark matter search with nuclear emulsion. First of all, higher resolution nuclear emulsion with fine silver halide crystals was deve…
Balloon-borne gamma-ray telescope with nuclear emulsion
Satoru Takahashi
By detecting the beginning of electron pairs with nuclear emulsion, precise gamma-ray direction and gamma-ray polarization can be detected. With recent advancement in emulsion scan…