A pair production telescope for medium-energy gamma-ray polarimetry

Abstract

We describe the science motivation and development of a pair production telescope for medium-energy (∼5–200 MeV) gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope (AdEPT), takes advantage of the Three-Dimensional Track Imager, a low-density gaseous time projection chamber, to achieve angular resolution within a factor of two of the pair production kinematics limit (∼0.6° at 70 MeV), continuum sensitivity comparable with the Fermi-LAT front detector (<3 × 10−6 MeV cm−2 s−1 at 70 MeV), and minimum detectable polarization less than 10% for a 10 mCrab source in 106 s.

Department

Physics

Publication Date

7-2014

Journal Title

Astroparticle Physics

Publisher

Elsevier

Digital Object Identifier (DOI)

10.1016/j.astropartphys.2014.04.002

Document Type

Article

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