The ATLAS and CMS Plans for the LHC Luminosity Upgrade

TL;DR

This paper discusses the staged plans for upgrading the LHC's luminosity, including the physics goals, experimental challenges, and detector R&D required for the ATLAS and CMS experiments to operate effectively at higher luminosities.

Contribution

It provides a detailed overview of the planned luminosity upgrades for the LHC and the associated detector R&D and performance considerations.

Findings

Projected luminosity levels for phase 1 and phase 2 upgrades.

Challenges in detector operation at high radiation levels.

Expected improvements in detector performance.

Abstract

In January 2007 the CERN director general announced the plan for the staged upgrade of the LHC luminosity. The plan foresees a phase 1 upgrade reaching a peak luminosity of $3 \times 10^{34}$ cm$^{-2}$s$^{-1}$ followed by phase reaching up to $ 10^{35}$ cm$^{-2}$s$^{-1}$. We discuss the physics potential and the experimental challenges of an upgraded LHC running. The detector R&D needed to operate ATLAS and CMS in a very high radiation environment and the expected detector performance are also discussed.