Category: Detector
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Inside the LS3 decommissioning challenge at CMS
Originally posted on the September EP Newsletter The CMS detector still looks familiar, but empty racks and cable trays reveal that its Phase-2 transformation has begun.
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The CMS Pixel detector was extracted after 10 years of successful operations
The core of the CMS experiment, the tracker pixel detector, has been removed after a decade of successful operation.
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CMS Muon Cathode Strip Chambers – out today, back for the future
How do you install new, additional components in an already compact machine?
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A new chapter for the CMS Drift Tubes
After years of effort to imagine, design, develop, build, and coordinate, a new chapter for the CMS Drift Tubes has finally begun!
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HGCAL keeps its cool in major testing milestone
One of the largest structures of CMS’s future High Granularity Calorimeter (HGCAL) has successfully completed a demanding series of cold tests, marking an important milestone on the road to the High-Luminosity LHC and the next era of particle physics research.
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The End of Run 3
29th of June 2026 saw the end of the LHC Run 3, and the end of the LHC as we know it!
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Handling Supermodules for Hi-Lumi CMS: How the ECAL team tested their Enfourneurs
The Electromagnetic Calorimeter (ECAL) group has tested the second enfourneur (pictured above), a highly specialized instrument that allows the insertion and extraction of key components of the CMS detector at CERN, the ECAL ‘supermodules’.
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Load Testing over 365 Tonnes on ‘Spindles’ in Preparation for Hi-Lumi CMS
CMS successfully carried out key tests for the lifting system needed in the construction of Hi Lumi CMS during the end of year stop 2025/2026. Four thin legs emerge from the floor of the CMS cavern to lift incredibly heavy parts of the CMS detector.
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The supporting structure of the new CMS HGCAL detector has arrived at CERN for assembly
After an eight-week journey, the first HGCAL absorber structure (CE-H1) was delivered to CERN and is ready to be assembled, just 100 metres above where the detector will eventually be located.
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CMS completes a new DAQ Server room in preparation for Hi-Lumi
The increase in data processing capabilities means that CMS is one step closer to being ready for Run 4. The new Data Acquisition (DAQ) room is a state-of-the-art server room, essential for the Hi-Lumi phase of the detector and beyond.