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CMS in 10 min
Cristina Mantilla Suarez (Johns Hopkins) New Perspectives 2019
Cristina Mantilla Suarez (JHU) - New Perspectives 2019
The LHC @ CERN
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two counter rotating proton beams accelerated to 13 TeV
CMS in 10 min Cristina Mantilla Suarez (Johns Hopkins) New - - PowerPoint PPT Presentation
CMS in 10 min Cristina Mantilla Suarez (Johns Hopkins) New - - PowerPoint PPT Presentation
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)
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SLIDE 3
Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Accelerator (13 TeV)
- Accelerates protons to 6.5 TeV using 5 different accelerators
- Proton bunches cross every 40 MHz (25ns)
- ~1011 protons per bunch
- Superconducting
electromagnets
- Ultra high vacuum
- 1232 dipole magnets
@ 8.3 Tesla
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Compact Muon Solenoid
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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CMS Detector
X Y Z
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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CMS Particle ID
- What do we ultimately measure?
- Momentum (pT), Position, Energy
- What can we identify in CMS? (final state)
- Muons
- Electrons
- Photons
- Charged and neutral hadrons (composite of quarks)
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Detector @ CMS
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Detector @ CMS
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Detector @ CMS
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Detector @ CMS
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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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
SLIDE 12
Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Jets @CMS
A quark-antiquark pair is produced Collimated spray of particles q q p p Energy deposits in calorimeter
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Trigger @CMS
- LHC collisions ~40 MHz
- Level 1 trigger (hardware
based) ~100 kHz
- High-level trigger (software
based) ~1 kHz
- Rejection: 99.9995%
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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Physics @ CMS
? ? ? ? DM
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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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)!
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
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HL-LHC @ CMS
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Cristina Mantilla Suarez (JHU) - New Perspectives 2019
CMS @ New Perspectives
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