[PAR] [TLE] Large Hadron Collider [SEP] The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, most complex experimental facility ever built, and the largest single machine in the world.  It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and engineers from over 100 countries, as well as hundreds of universities and laboratories.  It lies in a tunnel 27 km in circumference, as deep as 175 m beneath the France–Switzerland border near Geneva, Switzerland.  Its first research run took place from March 2010 to early 2013 at an energy of 3.5 to 4 teraelectronvolts (TeV) per beam (7 to 8 TeV total), about 4 times the previous world record for a collider.  Afterwards, the accelerator was upgraded for two years.  It was restarted in early 2015 for its second research run, reaching 6.5 TeV per beam (13 TeV total, the current world record). [PAR] [TLE] Tevatron [SEP] The Tevatron was a circular particle accelerator (now inactive, since 2011) in the United States, at the Fermi National Accelerator Laboratory (also known as "Fermilab"), just east of Batavia, Illinois, and holds the title of the second highest energy particle collider in the world, after the Large Hadron Collider (LHC) of the European Organization for Nuclear Research (CERN) near Geneva, Switzerland.  The Tevatron was a synchrotron that accelerated protons and antiprotons in a 6.86 km, or 4.26 mi, ring to energies of up to 1 TeV, hence its name.  The Tevatron was completed in 1983 at a cost of $120 million and significant upgrade investments were made in 1983–2011.
[PAR] [TLE] Large Hadron Collider [ SEP ] The Large Hadron Collider ( LHC ) is the world 's largest and most powerful particle collider , most complex experimental facility ever built , and the largest single machine in the world . It was built by the European Organization for Nuclear Research ( CERN ) between 1998 and 2008 in collaboration with over 10,000 scientists and engineers from over 100 countries , as well as hundreds of universities and laboratories . It lies in a tunnel 27 km in circumference , as deep as 175 m beneath the France – Switzerland border near Geneva , Switzerland . Its first research run took place from March 2010 to early 2013 at an energy of 3.5 to 4 teraelectronvolts ( TeV ) per beam ( 7 to 8 TeV total ) , about 4 times the previous world record for a collider . Afterwards , the accelerator was upgraded for two years . It was restarted in early 2015 for its second research run , reaching 6.5 TeV per beam ( 13 TeV total , the current world record ) . [PAR] [TLE] Tevatron [ SEP ] The Tevatron was a circular particle accelerator ( now inactive , since 2011 ) in the United States , at the Fermi National Accelerator Laboratory ( also known as " Fermilab " ) , just east of Batavia , Illinois , and holds the title of the second highest energy particle collider in the world , after the Large Hadron Collider ( LHC ) of the European Organization for Nuclear Research ( CERN ) near Geneva , Switzerland . The Tevatron was a synchrotron that accelerated protons and antiprotons in a 6.86 km , or 4.26 mi , ring to energies of up to 1 TeV , hence its name . The Tevatron was completed in 1983 at a cost of $ 120 million and significant upgrade investments were made in 1983–2011 .
Which high energy particle collider was completed first, the Tevatron or the Large Hadron Collider?
Which high energy particle collider was completed first , the Tevatron or the Large Hadron Collider ?
The Tevatron
The Tevatron