CMS Pixel Detector Upgrade

TL;DR

This paper discusses the design and expected performance improvements of the upgraded CMS pixel detector, which aims to handle higher luminosity and radiation levels at the LHC with enhanced geometry and readout architecture.

Contribution

It introduces a new pixel detector design with optimized geometry and a fast digital readout system to improve tracking and vertexing at higher luminosities.

Findings

Design minimizes material budget and increases tracking points

Development of a fast digital readout architecture

Expected improved tracking and vertexing performance

Abstract

The present Compact Muon Solenoid silicon pixel tracking system has been designed for a peak luminosity of 1034cm-2s-1 and total dose corresponding to two years of the Large Hadron Collider (LHC) operation. With the steady increase of the luminosity expected at the LHC, a new pixel detector with four barrel layers and three endcap disks is being designed. We will present the key points of the design: the new geometry, which minimizes the material budget and increases the tracking points, and the development of a fast digital readout architecture, which ensures readout efficiency even at high rate. The expected performances for tracking and vertexing of the new pixel detector are also addressed.