2026-03-16
13:22 |
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2026-03-16
13:22 |
Efficiency and Timing Results of Mass Produced ME0 Stacks
/CMS Collaboration
To better cope with the harsher environments of the high-luminosity (HL-LHC) scheduled for Run 4 and beyond, the CMS Muon system is being upgraded. One of these upgrades is the addition to the existing gas electron multiplier (GEM) detector system a new station of GEM detectors called ME0. [...]
CMS-DP-2026-015; CERN-CMS-DP-2026-015.-
Geneva : CERN, 2026 - 16 p.
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2026-03-16
13:22 |
Pixel Auto-masking, Occupancy, and Cluster Size versus $\eta$ in 2025
/CMS Collaboration
This note presents studies of pixel automasking, detector occupancy, and on-track cluster size in CMS Run 3 proton-proton data at $\sqrt{s}$ = 13.6 TeV. A fraction of Pixel Barrel Layer 1 channels is observed to be automasked during stable beams due to out-of-sync errors, with rates evolving as a function of pile-up, luminosity, and accumulated radiation. [...]
CMS-DP-2026-016; CERN-CMS-DP-2026-016.-
Geneva : CERN, 2026 - 11 p.
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2026-03-16
13:22 |
Results from GEM Magnet Tests 2024-2025
/CMS Collaboration
The first full station of CMS GEM detectors, GE1/1, was operated for the first time in the CMS magnetic field in 2021. During this process, the generation of discharges and short circuits in the GEM foils were observed, and also during the CMS magnet ramps of the following years of the LHC Run-3. [...]
CMS-DP-2026-014; CERN-CMS-DP-2026-014.-
Geneva : CERN, 2026 - 20 p.
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2026-03-16
13:22 |
CSC gas gain stability monitoring using Run-2 data
/CMS Collaboration
The Cathode Strip Chambers (CSCs) are multi-wire proportional chambers located in the endcap regions of the CMS experiment at the CERN LHC. The CSCs have accumulated a significant radiation dose since the start of LHC operations, and it is important to identify any signs of detector aging and confirm that the detector can sustain the full integrated luminosity of High-Luminosity LHC, expected to reach 3000 fb$^{-1}$. [...]
CMS-DP-2026-013; CERN-CMS-DP-2026-013.-
Geneva : CERN, 2026 - 28 p.
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2026-03-16
13:22 |
Barrel Timing Layer Time Monitoring and Calibration
/CMS Collaboration
To fully exploit the timing capabilities of the MIP Timing Detector (MTD) in the reconstruction of charged particles, it is essential to develop robust tools for time monitoring and calibration of the detector channels with a precision at the level of a few picoseconds. Such tools are required to ensure long-term stability, promptly identify anomalous behaviors, and preserve the optimal timing performance throughout Phase-2 operations. [...]
CMS-DP-2026-012; CERN-CMS-DP-2026-012.-
Geneva : CERN, 2026 - 10 p.
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2026-03-16
13:22 |
Computing and physics performance of a high-throughput NGT Scouting stream for the HLT Phase-2 Upgrade
/CMS Collaboration
This note presents the computing and physics performance of the Next-Generation Trigger (NGT) Scouting stream, a high-throughput scouting strategy for the Phase-2 High-Level Trigger (HLT) targeting the execution of full HLT reconstruction on all Level-1 accepted events, with the output saved in a compact, analysis-oriented format. The performance of three different tracking configurations is evaluated: the baseline HLT tracking reconstruction, the Patatrack pixel tracking algorithm, and an alternative tracking strategy based on extended Patatrack pixel tracks [...]
CMS-DP-2026-011; CERN-CMS-DP-2026-011.-
Geneva : CERN, 2026 - 43 p.
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2026-02-24
13:12 |
Output rates and bandwidth of the High-Level Trigger during 2025 proton-proton runs
/CMS Collaboration
This note presents the output rates and bandwidth of the CMS High-Level Trigger (HLT) towards the end of 2025 proton-proton (pp) runs at $\sqrt{s} = 13.6$~TeV. The results are shown for a representative fill from late October 2025, corresponding to the last pp data-taking period of the year..
CMS-DP-2026-010; CERN-CMS-DP-2026-010.-
Geneva : CERN, 2026 - 10 p.
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2026-02-24
13:12 |
PPS tracker efficiency
in 2024
/CMS Collaboration
The Precision Proton Spectrometer (PPS) is a forward-proton
spectrometer using near-beam detectors inside Roman Pots (RPs)
located symmetrically on both sides of IP5 at a distance of about
220 m. The tracking system consists of four RPs equipped with 3D
pixel sensors. [...]
CMS-DP-2026-009; CERN-CMS-DP-2026-009.-
Geneva : CERN, 2026 - 17 p.
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2026-02-11
16:14 |
Performance of Hadronic Tau Reconstruction at the High Level Trigger using 2024 Data from the CMS Experiment at CERN
/CMS Collaboration
This note presents performance studies on the reconstruction of hadronic tau leptons in the CMS High Level Trigger
(HLT) using proton-proton data collected in 2024 at a center of mass energy of 13.6 TeV. The hadronic tau object performance is measured using the Tag and Probe technique on events triggered by an isolated muon with $p_{\text{T}} > 24$~GeV, targeting the decay $Z\rightarrow\tau\tau\rightarrow\mu\tau_{h}$ [...]
CMS-DP-2026-008; CERN-CMS-DP-2026-008.-
Geneva : CERN, 2026 - 23 p.
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