Life of the experiment

History and main milestones

 

  • March 1992:
    • Organization in Evian by EFCA of a meeting entitled "towards the experimental program of the LHC": 4 collaborations were put in competition. At that time CERN had only two large detectors at the LHC.
    • Creation of the LHCC by CERN of a scientific committee for the LHC experiments.
    • Merger of Ascot and Eagle into a single Atlas collaboration.
  • October 1992: three letters of intent submitted to the LHCC
  • June 1993, two experiments, CMS and Atlas, are homologated by the LHCC for a technical proposal
  • 1994: beginning of international collaborations with the arrival of 270 American physicists in the CMS experiment and the accession of 1250 scientists, 132 institutions, 28 countries. The basics of the main project are laid down:
    • Table of collaborations:
    • Table of responsibility:
    • Technical Table
    • Financial Tables
  • January 1996: The General Management of CERN approved the projects of CMS and Atlas with a budget limited to 475 MCHF (price of 1995). CMS approval and development of the MoU

 

TDR Chronology

  • 1997: Magnet, calorimeter, muon spectrometer, electromagnetic calorimeter,
  • 1998: The Tracker, 550 pages
  • 2000: Trigger, Level 1, 600 pages
  • 2000: Addendum to the Tracker
  • 2002: Acquisition of data and 2nd level of trigger
  • 2005: Computer Science
  • 2006: Physics (volume 1), detector performance and software tools
  • 2006: Physics (volume 2), physics performance

 

Chronology of the MoUs

  • 1996 Interim
  • 1998 Construction (distribution of responsibilities and organization)
  • 2002 Maintenance and Operations
  • 2005 addendum concerning computing

 

Highlights

  • Highlight : The world's largest superconducting solenoid is in place (april 2005)
  • Highlight : The world's largest superconducting solenoid is in place (december 2005)
  • Highlight : The Crystal Baker (mai 2006)
  • Highlight : World record for the superconducting solenoid of the CSM experiment (september 2006)
  • Highlight : Cosmic success for CMS (december 2008)
  • Highlight : Last results on the search for the Higgs boson (december 2011)
  • Highlight : Higgs boson : 125 GeV otherwise none (april 2012)
  • Highlight : Discovery of a new particle at the LHC ! (july 2012)
  • Highlight : Union around the Higgs boson (march 2015)
  • Highlight : Analyses of the LHC data continue at 8 TeV and just start at 13 TeV (august 2015)
  • Highlight : The properties of the Higgs boson measured by the Atlas and CMS experiment combined for the first time (september 2015)
  • Highlight : Atlas and CMS in search for new particles (june 2016)
 

Last update : 02/09 2017 (3889)

 

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