Evaluation of the performance of a CdZnTe-based soft $$\gamma $$-ray detector for CubeSat payloads

Author:

de Kuijper Kees,Diwan Rishank,Pal Partha Sarathi,Ritter Andreas,Parkinson Pablo M. Saz,Kong Andy C. T.,Parker Quentin A.

Abstract

AbstractThe low-energy $$\varvec{\gamma }$$ γ -ray (0.1-30 MeV) sky has been relatively unexplored since the decommissioning of the COMPTEL instrument on the Compton Gamma-Ray Observatory (CGRO) satellite in 2000. However, the study of this part of the energy spectrum (the “MeV gap”) is crucial for addressing numerous unresolved questions in high-energy and multi-messenger astrophysics. Although several large MeV $$\varvec{\gamma }$$ γ -ray missions like AMEGO and e-ASTROGAM are being proposed, they are predominantly in the developmental phase, with launches not anticipated until the next decade at the earliest. In recent times, there has been a surge in proposed CubeSat missions as cost-effective and rapidly implementable “pathfinder” alternatives. A MeV CubeSat dedicated to $$\varvec{\gamma }$$ γ -ray astronomy has the potential to serve as a demonstrator for future, larger-scale MeV payloads. This paper presents a $$\varvec{\gamma }$$ γ -ray payload design featuring a CdZnTe crystal calorimeter module developed by IDEAS. We report the detailed results of simulations to assess the performance of this proposed payload and compare it with those of previous $$\varvec{\gamma }$$ γ -ray instruments.

Funder

University of Hong Kong

Publisher

Springer Science and Business Media LLC

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