Towards a two-dimensional readout of the improved CMS Resistive Plate Chamber with a new front-end electronics

TL;DR

This paper presents the development and initial performance results of an improved CMS Resistive Plate Chamber with a two-dimensional readout and new front-end electronics, aiming to enhance rate capability and spatial resolution for high-luminosity collider conditions.

Contribution

It introduces a novel two-dimensional readout design and new front-end electronics for RPCs, demonstrating improved performance in a prototype chamber.

Findings

Successful implementation of 2D readout with orthogonal strips

Enhanced spatial resolution demonstrated in prototype tests

Insights into muon cluster size related to graphite resistivity

Abstract

As part of the Compact Muon Solenoid experiment Phase-II upgrade program, new Resistive Plate Chambers will be installed in the forward region. High background conditions are expected in this region during the high-luminosity phase of the Large Hadron Collider, therefore an improved RPC design has been proposed with a new front-end electronics to sustain a higher rate capability and better time resolution. A new technology is used in the front-end electronics resulting in very low achievable thresholds of the order of several fC. Crucial in the design of the improved RPC is the capability of a two-dimensional readout in order to improve the spatial resolution, mainly motivated by trigger requirements. In this work, the first performance results towards this two-dimensional readout are presented, based on data taken on a real-size prototype chamber with two embedded orthogonal readout strips. Furthermore, dedicated studies of the muon cluster size as a function of the graphite resistivity are discussed.