LHC Run 1

Target entity: LHC Run 1
Context triple: [Forward Multiplicity Detector, operatedAt, LHC Run 1]

• A. CERN LHC Run 2 era
  The CERN LHC Run 2 era was the second major operational period of the Large Hadron Collider, marked by higher collision energies and intensities that enabled a broad range of precision measurements and searches for new physics.
• B. LHC Run 3
  LHC Run 3 is the third major data-taking period of the Large Hadron Collider, featuring higher collision energies and intensities to enable new physics searches and precision measurements.
• C. High-Luminosity LHC
  The High-Luminosity LHC is a major upgrade of CERN’s Large Hadron Collider designed to significantly increase its collision rate and data output for more precise and rare particle physics measurements.
• D. CMS experiment
  The CMS experiment is a major general-purpose particle physics detector at CERN’s Large Hadron Collider designed to investigate a wide range of phenomena including the Higgs boson, dark matter candidates, and physics beyond the Standard Model.
• E. LHCf
  LHCf is a CERN experiment at the Large Hadron Collider that studies forward particles produced in proton–proton collisions to improve our understanding of ultra-high-energy cosmic rays.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: LHC Run 1
Target entity description: LHC Run 1 was the first operational period of the Large Hadron Collider (2009–2013), during which it delivered proton–proton and heavy-ion collisions that led to major discoveries including the Higgs boson.

• A. CERN LHC Run 2 era
  The CERN LHC Run 2 era was the second major operational period of the Large Hadron Collider, marked by higher collision energies and intensities that enabled a broad range of precision measurements and searches for new physics.
• B. LHC Run 3
  LHC Run 3 is the third major data-taking period of the Large Hadron Collider, featuring higher collision energies and intensities to enable new physics searches and precision measurements.
• C. High-Luminosity LHC
  The High-Luminosity LHC is a major upgrade of CERN’s Large Hadron Collider designed to significantly increase its collision rate and data output for more precise and rare particle physics measurements.
• D. CMS experiment
  The CMS experiment is a major general-purpose particle physics detector at CERN’s Large Hadron Collider designed to investigate a wide range of phenomena including the Higgs boson, dark matter candidates, and physics beyond the Standard Model.
• E. LHCf
  LHCf is a CERN experiment at the Large Hadron Collider that studies forward particles produced in proton–proton collisions to improve our understanding of ultra-high-energy cosmic rays.
• F. None of above. chosen