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

We describe the science motivation and development of a pair production telescope for medium-energy (∼5–200MeV) 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 c...

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Bibliographic Details
Published in:Astroparticle physics 2014-07, Vol.59, p.18-28
Main Authors: Hunter, Stanley D., Bloser, Peter F., Depaola, Gerardo O., Dion, Michael P., DeNolfo, Georgia A., Hanu, Andrei, Iparraguirre, Marcos, Legere, Jason, Longo, Francesco, McConnell, Mark L., Nowicki, Suzanne F., Ryan, James M., Son, Seunghee, Stecker, Floyd W.
Format: Article
Language:English
Subjects:
Angular resolution
Gamma rays
Pair production
Polarimetry
Sensitivity
Time projection chamber
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Summary:We describe the science motivation and development of a pair production telescope for medium-energy (∼5–200MeV) 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 70MeV), continuum sensitivity comparable with the Fermi-LAT front detector (
ISSN:0927-6505
1873-2852
DOI:10.1016/j.astropartphys.2014.04.002