Development of the ComPair gamma-ray telescope prototype

Abstract

There is a growing interest in the science uniquely enabled by observations in the MeV range, particularly in light of multi-messenger astrophysics. The Compton Pair (ComPair) telescope, a prototype of the AMEGO Probe-class concept, consists of four subsystems that together detect and characterize gamma rays in the MeV regime. A double-sided strip silicon Tracker gives a precise measure of the first Compton scatter interaction and tracks pair-conversion products. A novel cadmium zinc telluride (CZT) detector with excellent position and energy resolution beneath the Tracker detects the Compton-scattered photons. A thick cesium iodide (CsI) calorimeter contains the high-energy Compton and pair events. The instrument is surrounded by a plastic anti-coincidence (ACD) detector to veto the cosmic-ray background. In this work, we will give an overview of the science motivation and a description of the prototype development and performance.

References in corpus (8)

• AMEGO: Exploring the Extreme Multimessenger Universe
• Gamma-ray Astrophysics in the MeV Range: the ASTROGAM Concept and Beyond
• Developing the Future of Gamma-ray Astrophysics with Monolithic Silicon Pixels
• First observation of MeV gamma-ray universe with bijective imaging spectroscopy using the Electron-Tracking Compton Telescope aboard SMILE-2+
• Gamma ray Large Area Space Telescope (GLAST) Balloon Flight Engineering Model: Overview
• Front-end ASIC for Spectroscopic Readout of Virtual Frisch-Grid CZT Bar Sensors
• The Compton Spectrometer and Imager Project for MeV Astronomy
• Improving the low-energy transient sensitivity of AMEGO-X using single-site events

Cited by in corpus (8)

• Detecting neutrino-boosted axion dark matter in the MeV gap
• Development of a CsI Calorimeter for the Compton-Pair (ComPair) Balloon-Borne Gamma-Ray Telescope
• Development of Dual-Gain SiPM Boards for Extending the Energy Dynamic Range
• Electromagnetic signatures of white dwarf collisions in AGN discs
• AstroPix: CMOS pixels in space
• Development of the cadmium zinc TElluride Radiation Imager (TERI)
• The 2023 Balloon Flight of the ComPair Instrument
• Background Measurements and Simulations of the ComPair Balloon Flight