Abstract
We investigate the feasibility of gaseous TPC as a telescope and a polarimeter for cosmic gamma-rays, focussing on the energy range from 1 to 100 MeV. Our beam results show the angular resolution can reach a factor of 2 better than that of the Fermi LAT. We also demonstrate polarimetry with a high significance and an excellent dilution factor, for the first time above the pair production threshold and below 1 GeV.
M. Frotin—Now at GEPI, Observatoire de Paris, CNRS, Univ. Paris Diderot, Place Jules Janssen, 92190 Meudon, France.
S. Wang—Now at INPAC and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
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Acknowledgement
This work was funded by the French National Research Agency (ANR-13-BS05-0002) and was performed by using NewSUBARU-GACKO (Gamma Collaboration Hutch of Konan University).
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Yonamine, R. et al. (2018). A Comprehensive Analysis of Polarized \(\gamma \)-ray Beam Data with the HARPO Demonstrator. In: Liu, ZA. (eds) Proceedings of International Conference on Technology and Instrumentation in Particle Physics 2017. TIPP 2017. Springer Proceedings in Physics, vol 212. Springer, Singapore. https://doi.org/10.1007/978-981-13-1313-4_6
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DOI: https://doi.org/10.1007/978-981-13-1313-4_6
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