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The heart of the LHC: a dipole magnet

CMS end cap lowered into place

CMS silicon detector

LHC control center

LHC computing center

LHC's ATLAS detector

ATLAS beam pipe

Closing the ALICE doors

CMS control center

CMS silicon tracking detector insertion

The World Wide Web's first server

In the LHC control center

Damaged LHC

LHC magnet junction

CERN celebration

ATLAS mural

Globe of Science and Innovation

Magnet assembly

LHC sprawl

Last LHC connection--for a time

At the heart of the LHC are 1,232 dipole magnets, of which this is a cross section. The dipole magnet creates a nearly linear magnetic field that steers the beam of ionized particles around the accelerator. Two beams travel separately in opposite directions through the left and right central channels.
Caption by / Photo by Stephen Shankland/CNET
The CMS experiment is one of two geared for a variety of tasks, including finding the elusive Higgs boson. Because the LHC is underground, equipment such as this massive end cap for the CMS experiment must be lowered with cranes. This cap was at one end of the cylindrical detector.
Caption by / Photo by Maximilien Brice/CERN
One end of the CMS detector during the LHC's assembly in 2007.
Caption by / Photo by Maximilien Brice/CERN
The LHC's primary control center is used to monitor and run the particle accelerator. This pod of screens is matched by four others for other tasks. Separate control centers are used for the experiments. The green screens toward the left signal that all is well with hundreds of subsystems.
Caption by / Photo by Stephen Shankland/CNET
The LHC requires tremendous computing power to store data. A primary copy of the data is stored at CERN, but it's replicated elsewhere across the planet.
Caption by / Photo by Stephen Shankland/CNET
A view inside the ATLAS detector. Physicists hope to use the detector to find and detail the Higgs boson, a particle believed to imbue more conventional matter with mass.
Caption by / Photo by Claudia Marcelloni/CERN
ATLAS is one of the LHC's two general-purpose experiments. Here, the yellow crane holds the particle beam pipe that's being inserted into the detector.
Caption by / Photo by Maximilien Brice/CERN
ALICE, one of the LHC's four major experiments, is designed to probe the high-energy past just after the Big Bang when quarks weren't confined within protons and neutrons as they are today.
Caption by / Photo by Mona Schweizer/CERN
Albert de Roeck, one of the CMS managers, calls up the latest experimental data from the Compact Muon Solenoid.
Caption by / Photo by Stephen Shankland/CNET
LHS experiments are assembled underground. Here, a silicon tracking detector--a cousin to an ordinary digital camera sensor--is inserted into one of the LHC's two general-purpose experiments, the CMS.
Caption by / Photo by Michael Hoch/CERN
CERN is where Tim Berners-Lee created the World Wide Web. This is the hand-written note on the side of the first Web server alerting staff not to switch it off.
Caption by / Photo by Stephen Shankland/CNET
Mirko Pojer, a physicist and the engineer in charge of LHC operations, explains properties of the LHC's two countercirculating proton beams.
Caption by / Photo by Stephen Shankland/CNET
In a September 2008 incident at the LHC, electrical current resistance heated this area until liquid helium burst into a gas, damaging the LHC and forcing a delay in operation and an amended design.
Caption by / Photo by Maximilien Brice/CERN
This shot shows the exposed innards of a junction between two superconducting magnet sections at the LHC. The electrical bus connection toward the upper right failed in September 2008, overheating and causing a serious operational incident.
Caption by / Photo by Stephen Shankland/CNET
It's customary to celebrate milestones at CERN. Here are some of the leftover bottles.
Caption by / Photo by Stephen Shankland/CNET
The exterior of the Atlas control center at CERN is spruced up with physics-appropriate artwork.
Caption by / Photo by Stephen Shankland/CNET
The Globe of Science and Innovation has no scientific function, but the center is a distinctive CERN landmark.
Caption by / Photo by Stephen Shankland/CNET
This magnet assembly, above ground and not in use, shows how the LHC fits within its underground cavern.
Caption by / Photo by Stephen Shankland/CNET
The LHC, which fits into the underground tunnel used by an earlier accelerator at CERN, is 27 kilometers in circumference. For scale, the Geneva airport is at the far end of the circle in this shot and the Alps are in the distance.
Caption by / Photo by CERN
A 2007 photo shows a worker making the final connections in the LHC ring. Some of the work will be redone after a planned shutdown before the accelerator is run at full power.
Caption by / Photo by Claudia Marcelloni/CERN
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