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CSC L1 trigger system

Learn about the CMS detector and the CSC (Cathode Strip Chambers) in the trigger path. Explore the CSC Track Finder and the process of reducing data from 40MHz to 100kHz. Verify L1A raw data and make plots to check the system and trigger timing. Get more information from official CMS outreach pages and other resources.

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CSC L1 trigger system

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  1. CSC L1 trigger system CERN Summer School 2006 by Nina Krieger

  2. CSC L1 trigger system • Content • the CMS detector • CSC – Cathode Strip Chambers • trigger path • CSC Track Finder • I‘m working on...

  3. The CMS detector

  4. YE2 YE3 YE1 ME4 ME3 ME2 ME1 ME1 DT-11 DT-10 CSC – Cathode Strip Chambers using a 60° sector for current magnet test and cosmic challenge getting signals from wire ALCTs and from strip CLCTs

  5. trigger path how to reduce 40MHz-all-inclusive-data to 100kHz-raw-muon-data ?

  6. CSC - trigger path CFEB digitises strip data CLCTs AFEB digitises wire data ALCTs TMB: matches ALCT and CLCT in time coincidence

  7. CLCT TMB DMB trigger path On Chamber In Peripheral Crate In counting house Muon Port Card (Rice) Cathode Strip FE cards (CFEB) Trigger Motherboard(UCLA) DDU OPTICAL Track Finder Crate GMT FE ALCT FE Wire LCT Card Anode Wire FE cards (AFEB) RAT RPC – ALCT Transition Board DAQ Motherboard(OSU) DT-TF

  8. Track Finder Crate • collection of electronic boards including 12 Sector Processors and Single Muon Sorter • one SP: • receives trigger primitives from a 60° slice through one endcap aswell as from DT overlap region • reconstructs muon tracks of the CSC muon endcap system (3 dim) 12 SPs 36 muon candidates Single Muon Sorter 4 best muons Global Muon Trigger (GMT)

  9. 9001900090009dd1a000a106a008a7ff0300000001e1c41073800c7001071800c70003000009001900090009dd1a000a106a008a7ff0300000001e1c41073800c7001071800c7000300000 I‘m working on... • verifying L1A raw data: • DDU data should be the same as SP data • making plots of the trigger data, so it can be checked • if the system and the trigger are in time • if all wire groups in the chambers are switched on • recording trigger data

  10. 9001900090009dd1a000a106a008a7ff0300000001e1c41073800c7001071800c70003000009001900090009dd1a000a106a008a7ff0300000001e1c41073800c7001071800c7000300000 I‘m working on...

  11. For more information • CSC Track Finder homepage http://www.phys.ufl.edu/~acosta/cms/trigger.html • official CMS outreach page http://cmsinfo.cern.ch/outreach/ • from 2000, but interesting and a good overview http://joule.bu.edu/~hazen/DataSheets/CMS/CMSTrigTDR.pdf • http://www-collider.physics.ucla.edu/cms/trigger/ • EMU CMS group at CERN • http://emu-us-cms.web.cern.ch/EMU-US-CMS/ • some Point 5 pictures: • http://adria.home.cern.ch/adria/webpage%20photo%20albums/Point%205/index.htm

  12. For more information • CSC Track Finder homepage http://www.phys.ufl.edu/~acosta/cms/trigger.html • official CMS outreach page http://cmsinfo.cern.ch/outreach/ • from 2000, but interesting and a good overview http://joule.bu.edu/~hazen/DataSheets/CMS/CMSTrigTDR.pdf • http://www-collider.physics.ucla.edu/cms/trigger/ • EMU CMS group at CERN • http://emu-us-cms.web.cern.ch/EMU-US-CMS/ • some Point 5 pictures: • http://adria.home.cern.ch/adria/webpage%20photo%20albums/Point%205/index.htm thanks! for listening!

  13. For more information • CSC Track Finder homepage http://www.phys.ufl.edu/~acosta/cms/trigger.html • official CMS outreach page http://cmsinfo.cern.ch/outreach/ • from 2000, but interesting and a good overview http://joule.bu.edu/~hazen/DataSheets/CMS/CMSTrigTDR.pdf • http://www-collider.physics.ucla.edu/cms/trigger/ • EMU CMS group at CERN • http://emu-us-cms.web.cern.ch/EMU-US-CMS/ • some Point 5 pictures: • http://adria.home.cern.ch/adria/webpage%20photo%20albums/Point%205/index.htm thanks! for listening! …and to my supervisor Daniel Holmes

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