Instrument performance of the Gamma-Ray Polarimeter Experiment (GRAPE) test flight

Karla Oñate Melecio; Mark McConnell; James Bundock; Camden Ertley; Jason Legere; Emily Mello; Kevin Mello; Dominic Puopolo; Jimmy Zaid; Merlin Kole

doi:10.1117/12.3020811

19 July 2024 Instrument performance of the Gamma-Ray Polarimeter Experiment (GRAPE) test flight

Karla Oñate Melecio, Mark McConnell, James Bundock, Camden Ertley, Jason Legere, Emily Mello, Kevin Mello, Dominic Puopolo, Jimmy Zaid, Merlin Kole

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130963N (2024) https://doi.org/10.1117/12.3020811
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Gamma-Ray Polarimeter (GRAPE) is a wide field of view (FoV) Compton polarimeter measuring γ-ray polarization from transient sources such as Gamma-Ray Bursts (GRBs) in the 50-500 keV energy range with a broad range (20 keV – 3 MeV) for spectroscopy. The instrument is a 7x7x5 array of 245 optically isolated SiPMs each coupled to either a high-Z (GAGG:Ce) or low-Z (para-Terphenyl) scintillator. The novel design provides enables Compton imaging in addition to polarization capabilities, and Co-60 calibration sources (~25 nCi) imbedded within two centrally located low-Z detectors allow for onboard calibrations. We will report on the instrument performance of this design during a test flight on August 27, 2023, from Fort Sumner, NM.

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Karla Oñate Melecio, Mark McConnell, James Bundock, Camden Ertley, Jason Legere, Emily Mello, Kevin Mello, Dominic Puopolo, Jimmy Zaid, and Merlin Kole "Instrument performance of the Gamma-Ray Polarimeter Experiment (GRAPE) test flight", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130963N (19 July 2024); https://doi.org/10.1117/12.3020811

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