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arXiv · 1511.06084

Status of the CMS Phase I Pixel Detector Upgrade

Simon Spannagel
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Abstract

A new pixel detector for the CMS experiment is being built, owing to the instantaneous luminosities anticipated for the Phase I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking while featuring a significantly reduced material budget as well as new cooling and powering schemes. A new front-end readout chip mitigates buffering and bandwidth limitations, and comprises a low-threshold comparator. These improvements allow the new pixel detector to sustain and improve the efficiency of the current pixel tracker at the increased requirements imposed by high luminosities and pile-up. This contribution gives an overview of the design of the upgraded pixel detector and the status of the upgrade project, and presents test beam performance measurements of the production read-out chip.

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Simon Spannagel. 2016-12-22. Status of the CMS Phase I Pixel Detector Upgrade. https://doi.org/10.1016/j.nima.2016.03.028

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