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Performance of the MeV gamma-ray telescopes and polarimeters of the future. γ→ e+ e- in silicon-detector active targets

2019/02/21 by D. Bernard, Bernard, Denis
Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Nuclear Physics and Applications #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies

paper · pdf · doi:10.48550/arxiv.1902.07910

openalex publication_date 2019/02/21 · openalex created_date 2020/11/23 · openalex updated_date 2026/07/28

Abstract

A number of techniques are being developed to solve the monstrous sensitivity gap that exists between the energy ranges of good sensitivity of the Compton and of the pair telescopes and to extend polarimetry to the MeV gamma-ray world. I characterize the properties of an active target, detailing the various contributions to the angular resolution, using a full five-dimensional event generator of the Bethe-Heitler differential cross section. With the same tool I also examine the dilution of the polarization asymmetry induced by multiple scattering in the conversion wafer.

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