Raimon Casanova Mohr

A Monolithic HV/HR-MAPS Detector with a Small Pixel Size of 50 µm x 50 µm for the ATLAS Inner Tracker Upgrade

This paper presents a HV/HR-MAPS detector developed in the framework of the HV-CMOS collaboration for the ATLAS Inner Tracker update of the HL-LHC era. It was fabricated with a 150 nm HV-CMOS process which includes a layer to isolate the bulk of the PMOS transistors from the collecting node of the sensor. All the front-end electronics are integrated in the pixel, which is of only 50 µm x 50 µm, and include a preamplifier, shaper, discriminator and digital block with FEI3 column drain architecture.

Design and characterization of the monolithic matrices of the H35DEMO chip

The H35DEMO chip is a HV/HR-MAPS demonstrator of 18.49 mm x 24.4 mm, fabricated with a 0.35 µm HVCMOS process from AMS in four different substrate resistivities. The chip is divided into four independent matrices with a pixel size of 50 µm x 250 µm. Two of the matrices are fully monolithic and include the digital readout electronics at the periphery. This contribution describes the two standalone matrices of the H35DEMO chip and presents results of the beam tests carried out with unirradiated and irradiated samples with different substrate resistivities.