Speaker
Prof.
Denis Bernard
(LLR, Ecole Polytechnique & CNRS/IN2P3.)
Description
gamma-ray astronomy suffers from the sensitivity gap between the
energy ranges for which Compton telescopes and pair telescopes are
efficient.
This blank part of the SED of the cosmic sources that are active at
high energy hinders the understanding of their nature. In particular
the pi0 bump that is dreamt to be signing the hadronic interactions in
the cosmic accelerators that produce the highest energy cosmic rays is
not easily observed.
We will describe the development in progress of a thin gaseous active
target, a time projection chamber, as a high performance pair
telescope for gamma-ray astronomy and polarimetry in the MeV - GeV
energy range.
In particular the characterization of a prototype in a data-taking
campaign performed recently on the 1.7 - 74 MeV gamma-ray beam at
LASTI (U. of Hyôgo) will be described.
Primary author
Prof.
Denis Bernard
(LLR, Ecole Polytechnique & CNRS/IN2P3.)
