Main Image
Volume 294 - The 3rd International Symposium on “Quest for the Origin of Particles and the Universe" (KMI2017) - Poster Presentations
Analysis of cosmic-ray interaction in balloon-borne emulsion detector.
H. Kawahara* on behalf of the GRAINE Collaboration
*corresponding author
Full text: pdf
Pre-published on: 2017 November 22
Published on: 2017 November 24
GRAINE (Gamma-Ray Astro-Imager with Nuclear Emulsion) is a project aiming to observe cosmic gamma-ray sources.\ The main detector is consists of emulsion films and have sub-micron accuracy for tracking electron pairs from gamma ray interactions. In 2015, we succeeded 14 hour balloon flight in Australia Alice-Springs, and analysis of millions of cosmic-ray and gamma-ray events is undergoing.
We analyzed hadronic interaction in the emulsion chamber to evaluate the performance of the telescope. I detected about $1.5 \times 10^5$ hadronic events in one module and identified gamma rays attaching the events. As a result, we proved that angular resolution is about five times superior to existing telescopes.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.