HARPO: a TPC as a gamma-ray telescope and polarimeter

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 $e^{+}{e}^{-}$ pairs. We present the expected performance in simulations and the recent development of a demonstrator for tests in a polarized photon beam.

SPIE Astronomical Telescopes + Instrumentation, Ultraviolet to gamma ray, Montréal, Canada 2014. v2: note added in proof. Copyright 2014 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited

References in corpus (4)

• A Pair Polarimeter for Linearly Polarized High Energy Photons
• PMm2: large photomultipliers and innovative electronics for the next-generation neutrino experiments
• High-angular-precision gamma-ray astronomy and polarimetry
• Experimental study of photon beam polarimeter based on nuclear e+e- pair production in an amorphous target

Cited by in corpus (3)

• Strongly Lensed Jets, Time Delays, and the Value of H0
• Gamma-Ray Polarimetry
• Linear Polarimetry with $\gamma \to e^{+}{e}^{-}$ conversions