Tag: CMS
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Start up of the ATLAS and CMS magnets
Start up of the ATLAS and CMS magnets LS2 works and commissioning of the ATLAS Superconducting Magnets In the last few years, the ATLAS superconducting magnets and associated systems have received extensive maintenance and upgrades. Following this, the magnets have recently been successfully commissioned and are now running at nominal current. During LS2, the ATLAS
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What is the W boson mass trying to tell us?
What is the W boson mass trying to tell us? Introduction In April this year the CDF collaboration shocked the particle physics world with a new measurement of the mass of the W boson particle [1], with a precision better than all previous results combined, and a value of the W mass higher than the
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Progress towards a new calorimeter concept for the upgrade of CMS
Progress towards a new calorimeter concept for the upgrade of CMS Over two years ago we wondered if a new era for calorimetry was starting [1]. Compelled by the results reported in the Technical Design Report (TDR) of the High Granularity Calorimeter (HGCAL) for the upgrade of the CMS detector in Phase-2 of the LHC
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Demonstrating the capabilities of a new GEM
Demonstrating the capabilities of a new GEM During the LHC Long Shutdown 2 (2019-2021), many subsystems of the CMS experiment are being upgraded including its muon system. This is located on the outer part of the experiment and consists of various types of gaseous chambers. The muon system should identify and precisely measure high momentum
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Proton beams recorded at CMS pave the way for next LHC run
Proton beams recorded at CMS pave the way for next LHC run The Long Shutdown 2 (LS2) is almost over and CERN, along with the experiments at the Large Hadron Collider (LHC), is preparing to welcome the Run 3 next year. As part of the preparation for Run 3, during the last two weeks of
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Higgs boson and the quest for new physics
Higgs boson and the quest for new physics The discovery of a new particle in 2012 by the ATLAS and CMS experiments at CERN was just the beginning in understanding the properties of this particle and its potential link to some of the most pressing fundamental questions in modern physics. Following its discovery, the LHC
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Successful installation of the CMS Pixel Tracker
Successful installation of the CMS Pixel Tracker In early 2019 the CMS Phase-1 Pixel detector was extracted from the underground cavern after successful completion of the LHC Run 2 data taking campaign. Its sub-detectors, the Barrel Pixel (BPIX) and Forward Pixel (FPIX) detectors, were stored cool and dry in a clean room facility on the
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The installation of the beam pipe at the heart of the CMS experiment
The installation of the beam pipe at the heart of the CMS experiment After several years of complex design, manufacture and planning, the CMS collaboration, in tight cooperation with experts of the CERN Technology Department-Vacuum, Surfaces, and Coating group, have been installing the new heart of the detector, the beam pipe, over the last months.
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LHC takes on the SMEFT challenge
LHC takes on the SMEFT challenge The quest for new physics at the LHC is entering a new phase: the experiments are designing new strategies to target potential deviations from the Standard Model (SM) predictions in a systematic way, to complement the traditional “bump hunts” and, potentially, extend their sensitivity to mass regions beyond the
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CMS experiment prepares for Run 3
CMS experiment prepares for Run 3 The CMS experiment is one of the four large experiments at the LHC and a detailed description of the detector’s inner and outer layers can be found here. The detector successfully operated with LHC collisions since 2010 leading to the Higgs boson discovery in 2012 by the CMS and