Tag: CMS
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CMS sails to explore new undiscovered territories
CMS sails to explore new undiscovered territories Run 3 started on July 5, 2022, and paused with the shutdown of the machine on Monday, November 28 at 6 a.m. CMS recorded an integrated luminosity of nearly 40/fb (see Fig. 1, making for a particularly fruitful startup run. Figure 1: Luminosity delivered by LHC and recorded
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From Despair to Discovery
From Despair to Discovery The Ultimate Higgs Discovery Machine: The excitement amongst particle physicists around the world was palpable when the LHC, a proton accelerator twenty years in the making, started its commissioning phase on 10th September 2008. With 7 TeV protons beams designed to collide with unprecedented intensity, the LHC could produce the long
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Solving New Puzzles with the Higgs Boson
Solving New Puzzles with the Higgs Boson … to make an end is to make a beginning. The end is where we start from. T.S. Eliot, Little Gidding You might think that particle physics has accomplished its goals with the discovery of the last piece of the Standard Model jigsaw puzzle, the Higgs boson, but
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ATLAS and CMS experiments looking forward to Run 3
ATLAS and CMS experiments looking forward to Run 3 On the 4th of July of 2022 we celebrated the 10th anniversary of the end of decades-long search for an experimental confirmation of the BEH mechanism, and the start of a new era. With the discovery of the Higgs boson, the last unknown fundamental parameter of
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LHC experiments restart
LHC experiments restart The LHC restarted this summer, after a period of upgrades (LS2) and is gearing up to probe new realms of physics during a third run, which will be its most powerful yet. Run 3 of the LHC will feature higher-energy particle beams and higher collision rates, allowing physicists to collect more data
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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