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Concept
DØ experiment
Summary
The DØ experiment (sometimes written D0 experiment, or DZero experiment) was a worldwide collaboration of scientists conducting research on the fundamental nature of matter. DØ was one of two major experiments (the other was the CDF experiment) located at the Tevatron Collider at Fermilab in Batavia, Illinois. The Tevatron was the world's highest-energy accelerator from 1983 until 2009, when its energy was surpassed by the Large Hadron Collider. The DØ experiment stopped taking data in 2011, when the Tevatron shut down, but data analysis is still ongoing. The DØ detector is preserved in Fermilab's DØ Assembly Building as part of a historical exhibit for public tours.
DØ research is focused on precise studies of interactions of protons and antiprotons at the highest available energies. These collisions result in "events" containing many new particles created through the transformation of energy into mass according to the relation E=mc2. The research involves an intense search for subatomic clues that reveal the character of the building blocks of the universe.
In 1981, Fermilab director Leon M. Lederman asked for preliminary proposals for a "modest detector built by a modestly sized group" that would be located at the 'DØ' interaction region in the Tevatron ring and complement the planned Collider Detector at Fermilab. More than fifteen groups submitted proposals. Three of these proposals were merged into one effort under the leadership of Paul Grannis, which officially began on July 1, 1983. The group produced a design report in November 1984. The detector was completed in 1991, it was placed in the Tevatron in February 1992, and observed its first collision in May 1992. It recorded data from 1992 until 1996, when it was shut down for major upgrades. Its second run began in 2001 and lasted until September 2011. As of 2019, data analysis is still going on.
The DØ experiment is an international collaboration that, at its peak, included about 650 physicists from 88 universities and national laboratories from 21 countries.
Official source
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