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@cern See full size profile   #CERN, the European Organization for Nuclear Research, is the world's largest particle physics laboratory. - Images © CERN, unless otherwise stated.

19 hours ago

1969: John Adams in front of the 300 GeV model⠀ -⠀ #TBT #ThrowbackThursday ⠀ -⠀ 50 years ago, John Adams accepted the post of Director of the 300 GeV Project offered to him. The model shows one possible layout of the machine and its associate buildings. This project required the construction of a second laboratory, which became the Super Proton Synchrotron accelerator (SPS). Today, the SPS is the second-largest machine in CERN’s accelerator complex and provides a stepping stone between the Proton Synchrotron and the LHC.

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1 day ago

Our #PhotoOfTheWeek shows the two beam pipes of an LHC dipole magnet. ⚡⠀ -⠀ The LHC accelerator consists of two counter-rotating proton beams. Some 1230 15m-long dipole magnets are needed to steer these proton beams around the 27-km LHC ring.⠀ -⠀ The two beam pipes are shown here surrounded by superconducting coils and the iron yoke-cold mass.⠀ -⠀ Image credit: Erwin Van Hove/CERN

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3 days ago

This photo from 2006 shows the assembly of a sub-detector before it was installed in the @ATLASexperiment. The detectors had to be assembled in a clean room so that no impurities in the air could affect the vital systems on the machine. ⠀ -⠀ The ATLAS detector is now preparing for the future. The detector will be maintained and upgraded over the next two years. This upgrade will greatly increase the rate of particle collisions, bring higher readout rates and create more opportunities for physics discoveries.

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1 week ago

#OnThisDay 10 years ago CERN and antimatter were brought to the world’s screens in the Hollywood film 🎬 "Angels & Demons". ⠀ ⠀ #TBT #ThrowbackThursday ⠀ ⠀

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1 week ago

📸 Our #PhotoOfTheWeek shows an artist’s impression of the mayhem of quarks and gluons inside the proton. ⠀ -⠀ What a proton is depends on how you look at it, or rather on how hard you hit it. A century after Rutherford’s discovery, Amanda Cooper-Sarkar takes us on a tour of what we know and what is still to be discovered about this complex and ubiquitous particle. ⠀ -⠀ #CERNCourier

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1 week ago

This photo shows one of the LHC cold boxes, located in an underground cavern at point 4 of the 27-km ring. Liquid helium is stabilised and stored in a tank at a temperature of approximately 4.5 K (-268,65 C°). ⠀ ⠀ Since the start of January, the liquid helium flowing through the veins of the LHC’s cooling system has gradually been removed from the accelerator and, one by one, the eight sectors of the LHC have been brought back to room temperature.

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2 weeks ago

1968: Routine maintenance of emergency diesel generators ⠀ -⠀ #TBT #ThrowbackThursday ⠀ -⠀ This photo shows a thermal power station in which three sets of emergency diesel generators are installed. These generators ensure that during a power cut essential electricity supplies will be maintained to critical networks including the vacuum system of the Proton Synchrotron (PS) and the Synchrocyclotron (SC), as well as the beam dump of the Intersecting Storage Rings (ISR).

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2 weeks ago

📸Our #PhotoOfTheWeek shows work being done on the @CMSexperiment ’s Resistive Plate Chambers (RPC). ⠀ -⠀ As the name “Compact Muon Solenoid” suggests, detecting muons is one of CMS’s most important tasks. Resistive Plate Chambers are fast gaseous muon detectors that provide a muon trigger system. ⠀ -⠀ RPCs complement other muon detection technologies namely Drift Tubes, Cathode Strip Chambers and Gas Electron Multipliers. In the coming months, detector experts will be working hard to consolidate the RPC detector for future operations.

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2 weeks ago

This picture shows a silicon sensor being tested for the @CMSexperiment 's High Granularity Calorimeter (HGCAL) as part of an upgrade for the High-Luminosity LHC. ⁣ ⁣ The CMS HGCAL has been designed to replace the existing endcap calorimeters and measure the fine structure of particle showers, while still achieving good energy resolution.⁣ ⁣ #HiLumiLHC #UpgradingLHC

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3 weeks ago

1970: The Hyperon Bubble Chamber (HYBUC) ⁣ -⁣ #TBT #ThrowbackThursday ⁣ -⁣ This photo shows the Hyperon Bubble Chamber being built. This bubble chamber measured the magnetic moments of hyperons - particles containing one or more strange quarks.⁣

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3 weeks ago

📸Our #PhotoOfTheWeek shows welding of instrumentation for a new superconducting power line. ⁣ -⁣ This electrical transmission line for the High-Luminosity LHC uses new materials, a new cooling system and unprecedented technologies. ⁣ -⁣ According to Amalia Ballarino, the project leader, the line is more compact and lighter than its copper equivalent, and it is cryogenically more efficient than a classical low temperature superconducting link that must be cooled to 4.5 K.

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3 weeks ago

This picture shows the assembly of the GEM detectors in a clean room at CERN. ⁣ -⁣ During the Long Shutdown 2 (LS2), the @CMSexperiment will install 144 additional muon detector modules specially designed to detect particles produced in the very forward region. For CMS, LS2 is similar to a prolonged open heart surgery. ⁣ -⁣ The main goal is to improve the detector’s performance, thanks to innovative, customised components. The new accelerator will produce between five and ten times more collisions than the LHC.

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