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Super Proton Synchrotron
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==History== [[File:CERN UA5 - ppbar interaction at 540GeV.jpg|thumb|A [[proton]]–[[antiproton]] collision from the [[UA5 experiment]] at the SPS in 1982]] The SPS was designed by a team led by [[John Adams (physicist)|John Adams]], [[List of Directors General of CERN|director-general]] of what was then known as [[Laboratory II]]. Originally specified as a 300 [[GeV]] accelerator, the SPS was actually built to be capable of 400 GeV, an operating energy it achieved on the official commissioning date of 17 June 1976. However, by that time, this energy had been exceeded by [[Fermilab]], which reached an energy of 500 GeV on 14 May of that year.<ref>[http://cerncourier.com/cws/article/cern/28470 CERN courier]</ref> The SPS has been used to accelerate [[proton]]s and [[antiproton]]s, [[electron]]s and [[positron]]s (for use as the injector for the [[Large Electron–Positron Collider]] (LEP)<ref>[http://sl-div.web.cern.ch/sl-div/history/lep_doc.html#3.8 The LEP Collider – from Design to Approval and Commissioning] {{Webarchive|url=https://web.archive.org/web/20140618030149/https://sl-div.web.cern.ch/sl-div/history/lep_doc.html#3.8 |date=18 June 2014 }}, by S. Myers, section 3.8. Last accessed 28 February 2010.</ref>), and [[quark–gluon plasma|heavy ions]]. From 1981 to 1991, the SPS operated as a hadron (more precisely, proton–antiproton) collider (as such it was called [[Proton-Antiproton Collider|Sp{{overline|p}}S)]], when its beams provided the data for the [[UA1 experiment|UA1]] and [[UA2 experiment]]s, which resulted in the discovery of the [[W and Z bosons]]. These discoveries and a new technique for [[stochastic cooling|cooling]] particles led to a Nobel Prize for [[Carlo Rubbia]] and [[Simon van der Meer]] in 1984. From 2006 to 2012, the SPS was used by the [[CERN Neutrinos to Gran Sasso|CNGS]] experiment to produce a [[neutrino]] [[Accelerator neutrino|beam]] to be detected at the [[Laboratori Nazionali del Gran Sasso|Gran Sasso]] laboratory in Italy, 730 km from CERN.
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