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TBPS Rings production
No full textTBPS stands for Tracker Barrel with Pixel-Strip (PS) modules. TBPS is part of the Outer Tracker for Phase2 Upgrade of the CMS experiment. Each TBPS Barrel layer has a “Flat” central section, where the PS modules are aligned parallel to the beam line, and two “Tilted” sections, where the sensors are slightly inclined towards the LHC beam interaction point. “Rings” are the key structural components of the Tilted TBPS. The mechanical design and construction of the TBPS Rings are done by CERN. Pictures from the ongoing TBPS Rings production (2024-2025)
OPECST
No full textvisite de l’Office parlementaire des choix scientifiques et technologiques représenté par Madame Dominique Voynet, Députée (ancienne ministre de l’Environnement), République française et Madame Anne-Catherine Loisier, Sénatric
Forward Physics in ATLAS
No full textProcesses with scattered protons present in the final state, hereafter called forward physics, are briefly described. ATLAS sub-detectors, ALFA and AFP, dedicated to measure scattered protons are shown. A few analyses using data collected by these detectors are presented. Namely, elastic scattering at and 13 TeV, exclusive di-pion and di-lepton production and a search for the axion-like particles
Recent conventional and exotic charmonia results from LHCb
No full textQuarkonia production in heavy-ion collisions is an important experimental probe that sheds light on the heavy quark interaction with the nuclear medium. The bound quarkonium states undergo dissociation and recombination in PbPb collisions, where they can also experience the initial and final state effects such as shadowing and co-mover breakup. With the large datasets of pp and pPb collisions, and excellent vertexing capabilities allowing separation of the prompt and b-decay components, LHCb performs precise measurements of J/ψ, ψ(2S ) and, for the first time at the LHC, χc production and modification in small collision systems. This contribution will discuss these results, along with the first measurement of the nuclear modification factor of the exotic χc1(3872)
Poster Session & Awards CMS Upgrade Week April 2025
No full textPhotos of the poster session and the poster awards during CMS Upgrade Week 7th - 11th April 2025. This week focused on the High Luminosity build of CMS and the work being done to prepare for this. Winners of the best poster awards were: Francesco Orlandi, Trisha Debnath, and John Dervan
Tour of Meyrin High Luminosity CMS Labs
No full textCMS offered tours of some of the labs on the Meyrin site as they create pieces of the Hi-Lumi CMS detector during the CMS Upgrade week 2025 (7th - 11th April). Several small groups were sent around the different laboratories
Modelling, Identification, and Sway Damping Control for Cable-Suspended Dual-Arm Robotic Systems
No full textOverhead robotic operations are vital in nuclear research, infrastructure inspection, and maintenance of challenging environments. Traditional solutions like long-reach manipulators often lack the flexibility for unstructured scenarios. Cable-suspended dual-arm robotic systems offer a promising alternative, providing extended workspaces and improved resilience to collisions. However, flexible cables introduce oscillatory dynamics that can compromise precision, safety, and operational efficiency during transportation. This thesis addresses the challenges of modelling, simulation, and control of cable-suspended dual-arm systems. A novel methodology for dynamic modelling and parameter identification is presented, enabling realistic simulations that connect theoretical models with real-world applications. Utilizing these models, two innovative sway damping techniques are proposed: a partial feedback linearization strategy to control cable oscillations directly, and a model predictive control approach to minimize oscillations while adhering to constraints, such as joint limits and collision avoidance for dual-arm systems. Both methods uniquely leverage the motion of the manipulators to mitigate oscillations, eliminating the need to modify the suspension platform or integrate additional hardware. The proposed methods were validated experimentally, demonstrating reduced oscillations and settling times, enabling safer and faster task execution. The results highlight the potential of cable-suspended robotic systems as efficient solutions for complex operations in constrained environments, paving the way for advancements in robust control and practical deployment
Development of the ATLAS Liquid Argon Calorimeter Readout Electronics for the HL-LHC
No full textThe luminosity increase offered by the High-Luminosity LHC poses a significant challenge to all LHC experiments. In the context of ATLAS and, more specifically, the Liquid Argon Calorimeter, this upcoming scenario will push the existing deployment to its limits. In order to handle the expected tenfold increase in collisions the entire LAr community has embarked on a series of upgrades encompassing both the on and off detector electronics in an effort to to deliver better measurements of collisions with the aim of enriching ATLAS' results and, in the process, try to send light on physics which might be hiding 'just around the corner'. This presentation will visit the why and where of the upgrades for the LAr calorimeter whilst also delving into the status of the different projects comprising this monumental effort