Speaker
Description
The H2M (Hybrid-to-Monolithic) prototype is a technology demonstrator for fully integrated Monolithic Active Pixel Sensors (MAPS) manufactured in a novel $65\,\mathrm{nm}$ CMOS imaging technology. This technology enables the production of MAPS with an increased density of in-pixel logic. The H2M design ports a hybrid pixel-detector architecture into a monolithic chip with a pixel matrix of $64 \times 16$ square pixels of size $35 \times 35\, \mu \mathrm{m}^2$.
To investigate the internal electric field and charge collection characteristics of H2M, grazing angle studies are performed at the DESY II Test Beam Facility. Here, particles impinge the sensor at very shallow angles, enabling the extraction of charge collection as a function of depth. From this information the active thickness of the sensor, which is on the order of $10\,\mu\mathrm{m}$, can be determined. This contribution will provide an overview of the experimental setup and will show results of the grazing angle measurements including the determined active thickness of the sensor for various samples and operation conditions.