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CMS in 10 min Cristina Mantilla Suarez (Johns Hopkins) New - PowerPoint PPT Presentation

Sep 10, 2022 •450 likes •634 views

CMS in 10 min Cristina Mantilla Suarez (Johns Hopkins) New Perspectives 2019 2 The LHC @ CERN two counter rotating proton beams accelerated to 13 TeV Cristina Mantilla Suarez (JHU) - New Perspectives 2019 3 Accelerator (13 TeV)

  1. CMS in 10 min Cristina Mantilla Suarez (Johns Hopkins) New Perspectives 2019

  2. � 2 The LHC @ CERN two counter rotating proton beams accelerated to 13 TeV Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  3. � 3 Accelerator (13 TeV) •Accelerates protons to 6.5 TeV using 5 different accelerators •Proton bunches cross every 40 MHz (25ns) •~10 11 protons per bunch • Superconducting electromagnets • Ultra high vacuum • 1232 dipole magnets @ 8.3 Tesla Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  4. � 4 Compact Muon Solenoid Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  5. � 5 CMS Detector Y X Z Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  6. � 6 CMS Particle ID • What do we ultimately measure? • Momentum (p T ), Position, Energy • What can we identify in CMS? (final state) • Muons • Electrons • Photons • Charged and neutral hadrons (composite of quarks) Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  7. � 7 Detector @ CMS Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  8. � 8 Detector @ CMS Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  9. � 9 Detector @ CMS Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  10. � 10 Detector @ CMS Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  11. � 11 Reconstruction @CMS • Particle flow (PF) combines information from all sub-detectors • Muon: Tracker+ Muon hits • Electron: Tracker + ECAL Deposit • Charged Hadron: Tracker + HCAL Deposit • Photon: ECAL Deposit • Neutral Hadron: HCAL Deposit • Charged and neutral hadrons are clustered into jets Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  12. � 12 Jets @CMS p p q q A quark-antiquark pair is produced Collimated spray of particles Energy deposits in calorimeter Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  13. � 13 Trigger @CMS • LHC collisions ~40 MHz • Level 1 trigger (hardware based) ~100 kHz • High-level trigger (software based) ~1 kHz • Rejection: 99.9995% Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  14. � 14 Physics @ CMS ? DM ? ? ? Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  15. � 15 Today @ CMS • Luminosity (L) ~ number of collisions per unit time:~140fb -1 • But 95% of the total LHC data still to come (and be studied)! Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  16. � 16 HL-LHC @ CMS Cristina Mantilla Suarez (JHU) - New Perspectives 2019

  17. � 17 CMS @ New Perspectives Cristina Mantilla Suarez (JHU) - New Perspectives 2019

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