A GEM Detector System for an Upgrade of the High-eta Muon Endcap Stations GE1/1 + ME1/1 in CMS

TL;DR

This paper proposes an upgraded GEM detector system for the CMS muon endcap stations to improve performance at high luminosity, detailing design, electronics, schedule, and future plans.

Contribution

It introduces a new GEM detector station (GE1/12) for CMS, enhancing muon detection capabilities at high luminosity levels.

Findings

Improved muon detection at high luminosity

Detailed design and electronics overview

Implementation schedule and cost analysis

Abstract

Based on the CMS Upgrade R&D Proposal RD10.02, we describe the motivation and main features of the CMS GEM Project for LS2 and propose the addition of a full GE1/12 detector station comprising Gas Electron Multiplier (GEM) chambers to the forward muon system of CMS. The limitations of the currently existing forward muon detector when operating at increasingly high luminosity expected after LS1 are laid out followed by a brief description of the anticipated performance improvements achievable with a GE1/1 station. The second part describes the detector system followed by an overview of electronics and associated services including a discussion of the schedule and cost of the project. Plans for a precursor demonstrator installation in LS1 are presented. This proposal is intended as a concise follow-up of the detailed document CMS-IN-2012-023. If approved, this is to be followed by a detailed Technical Design Report.