D0 Run IIa Trigger Commissioning

The D0 trigger system selects "interesting" events produced by the Fermilab Tevatron Collider for further offline analysis. The Tevatron proton and antiproton beams collide at 7 Mhz. The trigger system selects 20-30 Hz of these events to be written to tape. D0 has three levels of trigger filtering:

Level 1 - A pipelined hardware trigger with inputs  from the liquid argon calorimeter, scintillation counters, the muon system, and the fiber tracker.

Level 2 - Combines and extends L1 information in specialized preprocessors.  It also adds information from the silicon tracker.

Level 3 - A Linux processor farm which can reconstruct and analyse events.

A useful general text description of the trigger was presented at the Xth Real Time Conference 97, Beaune France

There will be a Run2a  Trigger Workshop at Fermilab on April 22-23.

Final Agenda and Links to talks

Video Archive

Old Run II trigger page

Level 1

• Framework
• Cal Status
• L1 CTT trigger documentation
• Muon
• CTT
  

Level 2

• STT
• Muon
• Beta

Level 3

Trigger commissioning schedule

Trigger Simulator

Trigger Board

- Thursdays at 3:30 in the Ninth Circle

Meeting transparencies:

    2/28/2002

Introduction (Ron Lipton)
Level 2 Status (Roger Moore)
Level 1 Calorimeter ( Dan Edmunds , Bob Kehoe )

      3/14/2002

Introduction and schedule (Ron Lipton)
CTT Status (G. Blazey) ppt version

      3/28/2002

Level 3 Status and Recent Work - (Doug Chapin)
L1 CAL Schedule and PROM Programming (Bob Kehoe)
Plans for Trigger Workshop (Ron Lipton)

      4/11/2002

CTT Hardware Protocols - Talk - Document - (Levan Babukhadia)
Trigger Monitoring with the Luminosity System (Jaewon Park)

      8/15/2002

Trigsim Status (Dugan O'Neil pdf)
P12 Comments (Gordon Watts pdf, ppt)

9/12/2002

CTT Status (Babukhadia pdf)
DAQ Task Force Report (Brooijmans pdf)
L3 Monitor Based SCL Init (Watts ppt)

11/14/2002

L1 Muon CTT Commissioning Plan  (Jeff Temple pdf)

5/22/2003

Note on Pseudo Terms (Laurens html)

L1 Cross section plots (Begel ps)

Note on COOR handling of L1 Pseudoterms (Snyder text)

Agenda and FEB notes (Lipton ppt)

6/5/2003

Agenda (Lipton ppt)

Transparencies related to the Oklahoma Workshop (July 2002)

Trigger talk at plenary session (R . Lipton ppt )

L1 muon in a Nutshell (K Johns  ppt )

L1 muon Status (K Johns pdf)

L2 Status (Linnemann  ppt )

L2 Upgrades (Linnemann  ppt )

L3 DAQ 6 Month Plan (Watts pdf )

Muon Trigger Discussion (Mulders html )

Trigger Thumbnail (Blazey ppt )

Organized by Ron Lipton (lipton@fnal.gov)