Review on depleted CMOS
September 03, 2019
September 06, 2019
Monolithic active pixel sensors (MAPS) integrate both sensor matrix and readout circuitry in one piece of silicon. Pixel sensors in commercial CMOS technologies receive increasing interest for vertex and tracking detectors. They have advantages in detector assembly, production cost, and other benefits like lower material and higher granularity. Used for the first time in the STAR experiment, adopted for the ALICE experiment, they are being considered for future detectors, like the ATLAS HL-LHC upgrade, FCC and CLIC. The most aggressive applications require full depletion in the sensing volume where charge collection by drift improves timing and radiation tolerance to high-intensity hadron fluences. This paper addresses the improvements and challenges of depleted CMOS with insights on sensor and circuit design.
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