Development of the cadmium zinc TElluride Radiation Imager (TERI)
Abstract
The cadmium zinc TElluride Radiation Imager, or TERI, is an instrument to space qualify large-volume 4 × 4 × 1.5 \ cm3 pixelated CdZnTe (CZT) detector technology. The CZT's anode is composed of a 22 × 22 array of pixels while the cathode is planar. TERI will contain four of those crystals with each pixel having an energy range of 40 \ keV up to 3 \ MeV with a resolution of 1.3 \% full-width-at-half maximum at 662 \ keV all while operating in room temperature. As the detectors are 3D position sensitive, TERI can Compton image events. TERI is fitted with a coded-aperture mask which permits imaging low energy photons in the photoelectric regime. TERI's primary mission is to space-qualify large-volume CZT and measure its degradation due to radiation damage in a space environment. Its secondary mission includes detecting and localizing astrophysical gamma-ray transients. TERI is manifested on DoD's STP-H10 mission for launch to the International Space Station in early 2025.