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arXiv · 2312.05939

The upgrade of the CMS muon system for the High Luminosity LHC

Antonello Pellecchia
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Abstract

The muon system of the CMS experiment is expected to upgrade all of its subdetectors for the Phase-2 of the Large Hadron Collider (LHC) that will begin in 2029. The upgrade plans for drift tubes (DTs), cathode strip chambers (CSCs) and resistive place chambers (RPCs) include a new electronics for better performance in high background rate conditions and to sustain the large radiation dose delivered by the high-luminosity LHC (HL-LHC). Two new RPC stations will also be installed to complement CSCs in the forward region $1.8 < |\eta| < 2.4$, while three stations of triple-GEM (gas electron multiplier) detectors will complement CSCs in the region $1.5 < |\eta| < 2.4$ and extend the CMS muon system coverage in the very forward pseudorapidity region up to $|\eta| = 2.8$. We present the goals and status of the CMS muon system upgrade including the performance of the early Phase-2 upgrades demonstrated in Run 3 with proton-proton collisions, the performance validation of the new detectors in test beams and the mass production status of the new stations.

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Antonello Pellecchia. 2023-12-10. The upgrade of the CMS muon system for the High Luminosity LHC. https://arxiv.org/abs/2312.05939

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