2024/05/10 by Daniel Shy, Shy, Daniel, Richard S. Woolf +7
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Medical Imaging Techniques and Applications #Nuclear Physics and Applications #Radiation Detection and Scintillator Technologies
paper · pdf · doi:10.48550/arxiv.2405.06815
openalex publication_date 2024/05/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Gamma-ray astrophysics in the MeV band is an exciting field in astronomy due to its potential for multi-messenger astrophysics. It has, however, remained under-explored when compared to other wavelengths. One reason for this observational gap is the difficulties with measuring these high-energy photons and the requirement of large amounts of detection material. In this work, we investigate the usage of large-volume GAGG scintillators for use as a calorimeter in future MeV telescopes. We developed a 5×5 array calorimeter utilizing 1×1×6 cm3 GAGG crystals with onsemi C-series SiPM readout. We tested the calorimeter at the High Intensity Gamma-ray Facility (HIGS) with monoenergetic beams ranging from 2-25 MeV. Finally, we also investigate larger 1×1×8 cm3 crystals and characterize their response across their depth when their surface treatment is either polished or frosted.