Before the start of the LHC Run 3, CMS improved many aspects of its trigger system in order to boost the physics reach of the experiment. To select events of potential physics interest, the CMS trigger system divides the processing into two levels:…
Read moreJet substructure (JSS) has emerged as a powerful framework for studying the Standard Model (SM) and provides a key set of tools for probing nature at the highest energy scales accessible by terrestrial experiments. While not an experimental or…
Read moreThe story starts in September 2022 while, during the ECAL Operations meeting our veteran electronics expert, Evgueni Vlassov reported that the voltage in one of the control cards was unstable. He prophetically proposed that the cause might be water…
Read moreIntroduction The upcoming upgrade of the LHC to the HL-LHC will pose significant challenges to the detectors due to the enhanced radiation levels and the increase in the number of pile-up interactions. To meet the increased demands, CMS has…
Read moreThe milliQan collaboration is on track to finish the installation and commissioning of their Run 3 detector before the end of the YETS, Components of both the “bar” and “slab” detectors have been placed in a tunnel above the CMS experimental cavern…
Read moreEven though Run-3 data taking has only just started, the preparations for the next phase of the LHC physics programme are well under way. Just like the LHC, during LS3 many of the LHC experiments will receive significant upgrades. In order to…
Read moreRun 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…
Read moreThe 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…
Read more… 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…
Read moreOn 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…
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