A compact instrument for gamma-ray burst detection on a CubeSat platform II: Detailed design, assembly and validation
David Murphy, Alexey Ulyanov, Sheila McBreen, Joseph Mangan, Rachel, Dunwoody, Maeve Doyle, Conor O'Toole, Joseph Thompson, Jack Reilly, Sarah, Walsh, Brian Shortt, Antonio Martin-Carrillo, Lorraine Hanlon

TL;DR
This paper details the design, assembly, and validation of GMOD, a compact gamma-ray detector for CubeSat missions, demonstrating its capability to detect gamma-ray bursts and its suitability for small satellite platforms.
Contribution
It introduces a novel, miniaturized gamma-ray detector with detailed design, validation, and demonstrated performance for CubeSat applications, expanding possibilities for space-based gamma-ray astronomy.
Findings
Energy resolution of 5.4% at 662 keV
Successful integration within CubeSat form factor
Demonstrated capability for gamma-ray burst detection
Abstract
The Gamma-ray Module, GMOD, is a miniaturised novel gamma-ray detector which will be the primary scientific payload on the Educational Irish Research Satellite (EIRSAT-1) 2U CubeSat mission. GMOD comprises a compact (25mm 25mm 40mm) cerium bromide scintillator coupled to a tiled array of 44 silicon photomultipliers, with front-end readout provided by the IDE3380 SIPHRA. This paper presents the detailed GMOD design and the accommodation of the instrument within the restrictive CubeSat form factor. The electronic and mechanical interfaces are compatible with many off-the-shelf CubeSat systems and structures. The energy response of the GMOD engineering qualification model has been determined using radioactive sources, and an energy resolution of 5.4% at 662keV has been measured. EIRSAT-1 will perform on-board processing of GMOD data. Trigger results, including…
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