Tevatron
The Tevatron was a particle accelerator at Fermilab in Batavia , Illinois , USA , which collided protons and antiprotons . The accelerator went into operation in 1983 and was active until September 30, 2011.
Its circumference was approx. 6 km, the center of gravity energy was 1.96 T eV . The Tevatron contained four preaccelerator: A Cockcroft-Walton accelerator brought the protons to an energy of 750 keV, then they were in a linear accelerator to 400 MeV, in the booster 8 GeV and in a further ring, the main injector ( main injector ), pre-accelerated to 120 GeV. Finally, the protons were fed to the main accelerator ring of the Tevatron.
To create the antiprotons, protons were diverted from the main injector and shot at a nickel block. The resulting antiprotons were stored in the debuncher and later collided with the protons. The generation of an antiproton required approx. 10 5 protons. Therefore, the generation of antiprotons was the most limiting factor in luminosity at the Tevatron.
In 1995, the existence of top quark pairs was proven at the Tevatron . Until the commissioning of the Large Hadron Collider at CERN in November 2009, the Tevatron was the world's most powerful particle accelerator and the only accelerator that could generate enough energy to produce top quarks. In summer 2008, the American Congress surprisingly approved a limited continuation of the experiment.
Web links
- Tevatron Department at the Fermi National Accelerator Laboratory
Individual evidence
- ↑ Tim Folger: Farewell to the Tevatron . In: Spectrum of Science , December 16, 2011. Accessed August 4, 2012.
- ↑ Marlene Weiss: New Physics or Error? . In: Frankfurter Allgemeine Zeitung , November 11, 2008. Accessed August 4, 2013.
Coordinates: 41 ° 49 ′ 54.85 " N , 88 ° 15 ′ 6.17" W.