Investigating the Universe’s Origin


Physicists at CERN, the European Organization for Nuclear Research, are conducting experiments to reproduce the moment after the Big Bang, and


lead castings are helping make it happen. A large, single-arm, electromagnetic calorimeter for the ALICE detector (a large ion collider) has been built to


collide two beams of lead ions and generate a quark-gluon plasma—the state of matter hypothesized to exist at the beginning of the universe. More than 20,000 5 x 5-in. lead tiles cast by Vulcan GMS, Milwaukee, encircle the beam pipe, with fiber optic wires running through holes in the tiles. Te wires will capture data at a rate of 1 gigabyte per second.


56 | MODERN CASTING July 2011


SHAKEOUT


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