The Tevatron is a particle accelerator at the Fermilab in Batavia in the U.S. state of Illinois, the protons and anti- protons can collide with each other. The accelerator was put into operation in 1983 and was until 30 September 2011. The circumference of the Tevatron is about 6 km away and the center of mass energy is 1.96 TeV. The Tevatron contains four preaccelerator: a Cockcroft -Walton accelerator brings the protons to an energy of 750 keV. Then, they are in a linear accelerator to 400 MeV, the booster 8 GeV and a further ring, the main injector (main injector ), preaccelerated to 120 GeV. Finally, the protons are supplied to the main ring of the accelerator Tevatron.
To produce the antiprotons, protons are derived from the main injector and shot at a nickel block. The resulting antiprotons are stored in debuncher and later transferred to the protons collide. The generation of an antiproton requires about 105 protons. Therefore, the production of antiprotons is the most limiting factor of the luminosity at the Tevatron dar.
In 1995, the existence of top quark pairs was detected at the Tevatron. Prior to commissioning of the Large Hadron Collider (LHC ) is the world's most powerful particle accelerator Tevatron the accelerator and the only one who can muster a sufficiently high amount of energy to produce top quarks was. In summer 2008, the U.S. Congress approved surprising a temporary continuation of the experiment, which has the Tevatron in particular gives a brief lead in the hunt for new physical phenomena due to the failure of the LHC a few days after its commissioning in 2008.