CMS DAQ project at Fermilab

1
CMS DAQ project at Fermilab

• Ichiro Suzuki
• CD/CEPA/OAA
• Fermi National Accelerator Laboratory
• CD status report, 2003/03/26

2
CMS Experiment

• CMS (Compact Muon Solenoid)
• One of four experiments at CERN/LHC(Others are
  ATLAS, ALICE and LHC-B)
• Ready for collisions in 2007

3
CMS DAQ System

• Input 100kHzOutput 100Hz
• Building events of 1MB from 500 x 2kB fragments
• 'Slice'd design
• A 'slice' is a 64x64 switching event builder
  (EVB)
• Eight 'slice's work in parallel

4
Event Manager

• Event control and tracking unit
• Receiving trigger information from the GTP
  (global trigger processor) and propagate it to
  RUs (Readout Units, input side nodes of the
  switch)
• Managing/tracking events in the system
• One for each 'slice'
• Responsibility of Fermilab-MIT group

5
US-CMS Slice Test

• A full-chain readout test in surface building
  (experimental area is under ground) at CERN
• Small parts of HCAL and EMU detectors (both
  detectors are US's main contribution) Mini-DAQ
• Proving completion of US detector construction
  projects
• Planned in 2004

6
The EVM Project

• Two goals
• Development of the EVM
• Supporting US-CMS DAQ developments for the slice
  test
• The FNAL EVM Test Bench
• Small cluster of PCs andnetwork switches working
  asa mini-scale DAQ
• A test stand for EVMdevelopment
• An event builder forsub-detector (HCAL,
  EMU)readout front-end

7
Current Activities

• Benchmark test of the CERN EVB software
• EVM specific add-on to the EVB
• Reliable broadcast library
• Java EVB control library
• Dummy GTP (trigger unit)
• HCAL beam-test DAQ support
• Modification of the EVB software
• Software integration help
• EMU beam-test DAQ support
• Housing the EMU front-end crate in the EVM test
  bench
• Software integration help

8
Plan

• HCAL EMU beam test support '03 Q2
• Development of the slice test DAQ '03
• Slice test DAQ integration '04
• US-CMS slice test at CERN '04 Q4
• EVB benchmarks and improvements '03 Q2-3
• EVM study for better traffic control '03 - '04
• CMS DAQ commissioning '05 -
• CMS data taking '07

9
People

• V. O'Dell (FNAL/PPD) Project manager
• I. Suzuki (FNAL/CD) EVM RD
• Test bench sysadmin
• EVB improvement
• EVM software
• Beam test DAQ support
• D. Charak (FNAL/CD) EVM RD
• Dummy trigger processor
• Beam test DAQ support
• Test bench sysadmin
• K. Sumorok (MIT) Supervision,Documentation