HARPO: a TPC as a gamma-ray telescope and polarimeter
Denis Bernard, Philippe Bruel, Mickael Frotin, Yannick Geerebaert,, Berrie Giebels, Philippe Gros, Deirdre Horan, Marc Louzir, Patrick Poilleux,, Igor Semeniouk, Shaobo Wang, Shebli Anvar, David Atti\'e, Paul Colas, Alain, Delbart, Patrick Sizun, Diego G\"otz
TL;DR
HARPO demonstrates that a gas Time Projection Chamber can serve as an effective gamma-ray telescope and polarimeter, offering high angular precision and sensitivity, with promising simulation results and recent experimental development.
Contribution
This work introduces the use of a gas TPC for gamma-ray astronomy and polarimetry, with new simulation performance data and a demonstrator tested in polarized photon beams.
Findings
High angular precision and sensitivity demonstrated in simulations.
Successful development of a demonstrator for polarized photon beam tests.
Potential for effective gamma-ray detection and polarimetry with gas TPCs.
Abstract
A gas Time Projection Chamber can be used for gamma-ray astronomy with excellent angular-precision and sensitivity to faint sources, and for polarimetry, through the measurement of photon conversion to pairs. We present the expected performance in simulations and the recent development of a demonstrator for tests in a polarized photon beam.
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