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Automation of Efficiency Plot Comparison for GEM
No full textThis project focuses on automating the analysis of GEM efficiency plots by leveraging Open-CV and machine learning techniques, replacing the time-consuming and error-prone manual inspection process. In the current workflow, efficiency
plots generated from each run are manually assessed to evaluate performance. To address this, we propose developing a robust Python-based framework that automates image comparison using well-defined metrics.The implementation involves
reading efficiency plot images, extracting and analyzing key features, and optimizing the process for precision and scalability. The system applies predefined acceptance criteria to evaluate the plots, determining whether GEM events meet the required efficiency thresholds. By automating this workflow, the solution not only accelerates the evaluation process but also enhances accuracy, consistency, and reliability in assessing GEM efficiency, ultimately contributing to more efficient data processing and decision-making
LumiDays 25
No full textOverview of CMS luminosity-determination methodology in
Run III, and comparison to Run-II methodology (both pp and HI)
• Global view of
- calibration strategy: vdM, LSC, calibration-transfer / non-
linearity corrections, instrumental corrections, ...
- long-term monitoring strategy, conceptual definition of CT +
LTS systematic uncertainties
• Description of calibration procedures (vdM scans, LSC,
calibration-transfer, instrumental corrections) & associated systs
• What was achieved; key issue
Anti-matter in Cosmic Rays as a Dark Matter probe
No full textThe unprecedented precision of data coming from space challenges our understanding of the origin and the behaviour of particles and photons in the Galaxy. We will discuss the indirect searches of particle dark matter in the galactic cosmic rays, and specifically in the light antinuclei and in the positron channels. An attempt to understand current measurements will be pursued, paralleled by a multi-disciplinary perspective.</p
The IDEA detector concept for FCC-ee
No full textA detector concept, named IDEA, optimized for the physics and running conditions at the FCC-ee is presented. After discussing the expected running conditions and the main physics drivers, a detailed description of the individual sub-detectors is given. These include: a very light tracking system with a powerful vertex detector inside a large drift chamber surrounded by a silicon wrapper, a high resolution dual readout crystal electromagnetic calorimeter, an HTS based superconducting solenoid, a dual readout fiber calorimeter and three layers of muon chambers embedded in the magnet flux return yoke. Some examples of the expected detector performance, based on fast and full simulation, are also given
Silicon Photonics Circuits for the optical readout of CERN detectors
No full textThe increasing luminosity in CERN experiments, enabled by future upgrades, demands optical links with enhanced bandwidth and radiation tolerance. Silicon Photonics (SiPh) has emerged as the optoelectronic technology meeting these requirements and is being considered for the next generation of optical readout systems for CERN detectors. This paper presents the measurement results from photonic circuits integrated into a test chip designed at CERN, along with the progress on the system aspects of SiPh radiation-tolerant optical links
Evaluation of efficiency, radiation hardness, and timing performance of the Analogue Pixel Test Structure for ALICE ITS3
No full textA replacement of the three innermost layers of the new ALICE Inner Tracking System (ITS2), referred to as ITS3, is planned for the LHC Long Shutdown 3 (2026–2028) to further enhance tracking precision and efficiency. The ITS3 is designed as a cylindrically bent silicon vertex detector, utilizing stitched, wafer-scale sensors developed with the Tower Partners Semiconductor Co. 65 nm technology. The feasibility of this technology for ITS3 was evaluated using prototypes fabricated in the initial multi-reticle-layer run. This contribution presents the latest sensor characterization results from the analogue pixel test structures, focusing on detection efficiency, timing response, and radiation hardness
Overview of Measurements with Identified Light or Heavy Hadrons at ATLAS
No full textThe ATLAS experiment has recently performed measurements of identified hadrons in = 13 TeV proton-proton collisions, providing precision tests of QCD across a range of energy scales. This talk will present overview of results on the production cross-sections of J/ψ and ψ(2S) mesons, differential cross-section measurements of and mesons, W boson production in association with a charmed hadron, b-quark fragmentation properties in jets, jet track functions, and underlying-event studies with strange hadrons. The results are compared to latest QCD calculations, highlighting areas of agreement and discrepancies that motivate further theoretical developments
Search for hadronic decays of feebly-interacting particles at NA62
No full textThe NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models.The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models