Upgrades for the Precision Proton Spectrometer at the LHC: Precision Timing and Tracking Detectors

TL;DR

This paper discusses upgrades to the CMS-TOTEM Precision Proton Spectrometer at the LHC, focusing on enhanced timing and tracking detectors to improve performance amid high radiation and multiple interactions.

Contribution

It presents the planned detector upgrades for the CT-PPS to maintain precision measurements at high luminosity conditions.

Findings

Successful implementation of upgraded tracking detectors

Enhanced timing resolution for better event discrimination

Mitigation of radiation damage effects

Abstract

The CMS-TOTEM Precision Proton Spectrometer (CT-PPS) is an approved project to add tracking and timing information at approximately $\pm$210~m from the interaction point around the CMS detector. It is designed to operate at high luminosity with up to 50 interactions per 25~ns bunch crossing to perform measurements of e.g. the quartic gauge couplings and search for rare exclusive processes. During 2016, CT-PPS took data in normal high-luminosity proton-proton LHC collisions. In the coming years, high radiation doses and large multiple-vertex interactions will represent difficult challenges that resemble those of the high-luminosity LHC program. A coordinated effort of detector upgrades with the goal of reaching the physics goals while mitigating the degradation effects is under way. Upgrades to the tracking and timing detectors are discussed.