Students working on the LHC sit outside of Geneva's CERN Physics Laboratory, home of the particle collider.
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This photo shows the tunnel of the Large Hadron Collider, where beams of particles pass through the central pipes before colliding with each other.
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Detectors like this are placed at the spots where particles collide inside the LHC ring. They include sensitive equipment to detect the presence of exotic…Read More »
particles and their decay products that are created in the collisions. Less «
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LHC Control Room
Physicists watch particle collision data inside the LHC control room.
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LHC Particle Tracks
When particles collide inside the accelerator, they explode into energy that gives rise to new particles. These are often short-lived and decay into other…Read More »
particles. The particle products of collisions are shown as tracks in diagrams like this. Less «
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The ATLAS experiment at the Large Hadron Collider is one of the machine's two big all-purpose detectors.
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ATLAS Tracker Barrel
Here, a technician works on the semiconductor tracker barrel of the ATLAS experiment.
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Workers move an instrument called a calorimeter inside the ATLAS cavern.
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The building that houses the ATLAS experiment and its offices is painted with a mural showing two walls the detector with a collision event superimposed.
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ATLAS in LEGOS
A model of the ATLAS detector made out of LEGO blocks by Sascha Mehlhase.
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Credit: Michael Hoch / AdventueArt / CERN
The Compact Muon Solenoid (CMS) experiment is LHC's second major all-purpose detector. Among other projects, it is searching for the elusive theoretical particle called the Higgs boson.
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This track is an example of simulated data modelled for the ATLAS detector. The Higgs boson is produced in the collision of two protons at 14 TeV and quickly…Read More »
decays into four muons, a type of heavy electron that is not absorbed by the detector. The tracks of the muons are shown in yellow. Less «
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CMS weighs more than 12,000 tons.
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Credit: CERN/Maximilien Brice, Rachel Barbier
Scientists on the accelerator's LHCb (or LHC Beauty) experiment stand in front of their detector, which searches for rare particle decay processes.
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Technician in the Tunnel
A technician works inside the LHC tunnel during the machine's construction.
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The ring of the LHC extends 17 miles (27 kilometers) underneath Switzerland and France.
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LHC first fired up in 2008, but went offline shortly thereafter when some of its giant magnets failed because of faulty connections.
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A fish-eye view of the LHC control room, where physicists watch particle collisions as they take place.
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The LHC experiments include thousands of physicists from dozens of countries.
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LHC's ALICE Experiment
The ALICE experiment at the Large Hadron Collider studies heavy-ion collisions in search of a quark-gluon soup similar to the state of the early universe.
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ALICE's Inner Tracker
An interior shot of an element of ALICE called the inner tracker.
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ALICE's photon spectrometer contains 3,584 lead-tungstate crystals, a material as transparent as ordinary silica glass but with nearly four times the density.…Read More »
When a high-energy particle passes through one of these crystals it will scintillate, allowing the energy of electrons, positrons and photons to be measured through the 17,920 detection channels. Less «
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Technicians work on cabling inside the ALICE magnet.