Improvement in the Design and Performance of the Monopix2 Reticle-Scale DMAPS

Le résumé fourni par la source

LF-Monopix2" and "TJ-Monopix2" are the second generation of "Monopix" Depleted Monolithic Active Pixel Sensor prototypes fabricated in 150 nm and 180 nm CMOS processes, respectively.Both devices implement a fully functional column-drain read-out architecture at a reticle-size scale, but differ on the concept used for pixel design.LF-Monopix2 has each pixel s full front-end and read-out circuitry placed and isolated inside a charge collection node of a size comparable to the pixel area.TJ-Monopix2 separates all electronics from its small collection electrode within the pixel and uses process modifications to enhance its charge collection capabilities.The chips inherited and improved radiation-hard designs tested in their direct predecessors, while also reducing their pixel sizes and increasing their active column lengths to 1.7 centimeters.An overview of the design and latest test results of unirradiated Monopix2 chips are presented.Their front-end performance was quantified according to their response to injected test pulses or radioactive sources.Moreover, a successfully thinned-down and fully depleted LF-Monopix2 showed a high and uniform in-time detection efficiency on a test beam campaign.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.