CLICTD: A monolithic HR-CMOS sensor chip for the CLIC silicon tracker

Abstract

The CLIC Tracker Detector (CLICTD) is a monolithic pixelated sensor chip produced in a $180$ nm imaging CMOS process built on a high-resistivity epitaxial layer. The chip, designed in the context of the CLIC tracking detector study, comprises a matrix of $16\times 128$ elongated pixels, each measuring $300\times 30$ $\hat{I}¼$m${}^2$. To ensure prompt charge collection, every elongated pixel is segmented in eight sub-pixels, each containing a collection diode and a separate analog front-end. A simultaneous $8$-bit time measurement with $10$ ns time bins and $5$-bit energy measurement with programmable range is performed in the on-pixel digital logic. The main design aspects as well as the first results from laboratory measurements with the CLICTD chip are presented.

5 pages, 8 figures. Proceedings for the Topical Workshop on Electronics for Particle Physics (TWEPP 2019). 2-6 September 2019, Santiago de Compostela, Spain