AstroPix: Novel monolithic active pixel silicon sensors for future gamma-ray telescopes

Amanda L. Steinhebel, Henrike Fleischhack, Nicolas Striebig, Manoj Jadhav, Yusuke Suda, Ricardo Luz, Carolyn Kierans, Regina Caputo, Hiroyasu Tajima, Richard Leys, Ivan Peric, Jessica Metcalfe, Jeremy S. Perkins

Submitted on 6 September 2022


Space-based gamma-ray telescopes such as the Fermi Large Area Telescope have used single sided silicon strip detectors to track secondary charged particles produced by primary gamma-rays with high resolution. At the lower energies targeted by keV-MeV telescopes, two dimensional position information within a single detector is required for event reconstruction - especially in the Compton regime. This work describes the development of monolithic CMOS active pixel silicon sensors - AstroPix - as a novel technology for use in future gamma-ray telescopes. Based upon sensors (ATLASPix) designed for use in the ATLAS detector at the Large Hadron Collider, AstroPix has the potential to maintain high performance while reducing noise with low power consumption. This is achieved with the dual detection and readout capabilities in each CMOS pixel. The status of AstroPix development and testing, as well as outlook for future testing and application, will be presented.


Comment: 8 pages, proceedings, SPIE Astronomical Telescopes + Instrumentation 2022, July 17-22 2022

Subjects: Astrophysics - Instrumentation and Methods for Astrophysics; Astrophysics - High Energy Astrophysical Phenomena