The Fantastic Machine That Found the Higgs Boson.... 1

On July 4, scientists working with data from ongoing experiments at the Large Hadron Collider (LHC) announced the discovery of a new particle "consistent with" the Higgs boson -- a subatomic particle also colloquially referred to as the "God particle." After years of design and construction, the LHC first sent protons around its 27 kilometer (17 mile) underground tunnel in 2008. Four years later, the LHC's role in the discovery of the Higgs boson provides a final missing piece for the Standard Model of Particle Physics -- a piece that may explain how otherwise massless subatomic particles can acquire mass. Gathered here are images from the construction of the massive $4-billion-dollar machine that allowed us peer so closely into the subatomic world.

View of the Compact Muon Solenoid (CMS) Tracker Outer Barrel in the cleaning room on January 19, 2007. The CMS is a general-purpose detector, part of the Large hadron Collider (LHC), and is capable of studying many aspects of proton collisions at 14 trillion electronvolts.

Civil Engineering in the ATLAS cavern. This cavern that will eventually house the ATLAS 

experiment, part of the LHC at CERN. February 22, 2000. 

Various phases of the instrumentation of the ATLAS barrel tile calorimeter at CERN. ATLAS (A Toroidal LHC Apparatus) is one of seven particle detector experiments constructed at the Large Hadron Collider. October 28, 1997. 

Part of the LHC, in its tunnel at CERN (European Center for Nuclear Research) near Geneva, Switzerland, on May 31, 2007.

The globe of the European Organization for Nuclear Research, CERN, illuminated outside Geneva, Switzerland, on March 30, 2010.

Pictures from the Compact Muon Solenoid pixel-strip integration test performed at the Tracker Integration Facility on July 18, 2007.

Work on the first half tracker inner barrel/inner disk in the Compact Muon Solenoid clean room, on October 19, 2006.

One module of the ALICE (A Large Ion Collider Experiment) photon spectrometer. There are 3,584 lead tungstate crystals on the first module for the ALICE photon spectrometer. Lead tungstate crystals have the optical transparency of glass combined with much higher density, and can serve as scintillators, lighting up when when struck by an incoming particle. 

A scientist performs maintenance in the CERN LHC computing grid center in Geneva, on October 3, 2008. This center is one of the 140 data processing centers, located in 33 countries, taking part in the grid processing project. More than 15 million Gigabytes of data produced from the hundreds of millions of subatomic collisions in the LHC should be collected every year.