BABAR Level 3 Trigger

This page, begun in 1997, is provided as a convenient repository for documentation and information on the Level 3 Trigger effort, including the record of Level 3-related meetings.

Discussion Forums

• HyperNews
  • Software Triggers and Trigger Software
  • Online Farm and Dataflow
• BFMAIL
  • BFMAIL search facility

Reviews

• Preliminary Design Review Web page and committee report(May 1998)
  Corrected version (9 July 1998) of Strawman Trigger Document (Postscript) [fixes a confusing typo]
• Conceptual Design Review Web page and committee report (August 1997)
• First thoughts on Level 3 reviews, gpdf 97.01.08

E-Mail Addresses of L3 Folk

Level 3 Documents

• Goals progress list - Oct 15, 1998
• Level 3 Trigger Architecture Presentation. Presented at CHEP 98.
  • Final paper, for the proceedings.
  • Slides.
• List of tasks for October '98
• Ed's notes from the Aug. 98 workshop meeting at Harvard
• Strawman Requirements Document
• Summary tables from the Strawman Trigger iterations of April-May 1998
• Cathy's proposal for FCTS, GLT configuration
• TrgConfig general talk (HTML format)
• Milestones list for 1998 (evolving)
• List of deliverables needed from other subsystems
• Summaries of Zeroth-level benchmark runs (1/98)
• Interface Specification documents (evolving) [directory]
• Level 3 Essential Model version 1.0.1 [figures] (version covered by Level 3 CDR, August 1997)
• List of packages/tags for Level 3 code development
• Old draft Level 3 task list
• Trigger database maintained by Jim Panetta

Selected basic documents (primarily general trigger)

• BABAR Note 350: Interaction Vertices of Hadrons Produced by Photoproduction of Lost Beam Particle Background Causing Trigger Rates
• BABAR Note 338: Level 1 Global Trigger Efficiency, Rate and Event Time Jitter Simulation Results -
  (contains November 1996 workshop efficiency requirements updates)
• Trigger Design Requirements
  • Version 3.71 (from Level 3 CDR, August 1997)
  • Version 3.21 (older version from Trigger PDRR+CDR, February 1996)
• BABAR Technical Design Report - selected chapters:
  Detector Overview [ps], Physics with BABAR [ps], Electronics (including DAQ and trigger) [ps], Computing (including online farm) [ps], Interaction Region and Backgrounds [ps]

Level 3 Software

Level 3 Packages in CVS:

Package	TLA	Function	Responsible person
L3Dch	L3D	Drift chamber algorithms	Alexei Dvoretsky
L3Emc	L3E	Calorimeter algorithms	Rainer Bartoldus
L3Master	L3M	Steering framework	Rainer Bartoldus
L3Sim	L3S	Simulation sequences	Anders Ryd
L3TConfig	L3T	Configuration Object accessing	Alexei Dvoretskii
L3TConfigP	L3T	L3TConfig Persistent definitions	Alexei Dvoretskii
L3TData	L3T	L3 Data Objects	Alexei Dvoretskii
L3TDataP	L3T	L3TData Persistent definitions	Songhoon Yang
L3TDiag	L3T	Diagnostic routines	Jim Panetta
L3TDisplay	L3T	L3 one event display	Jim Panetta
L3TEnv	L3T	L3 Environment	Anders Ryd
L3TFilters	L3T	Event level Filters	Rainer Bartoldus
L3TLumi	L3T	Luminosity calculation	Rainer Bartoldus
L3TModules	L3T	Various utility modules	Rainer Bartoldus
L3TMon	L3T	OPR/Online monitoring software	Jim Panetta
L3TMonTools	L3T	Html for use in JAS	Jim Panetta
L3TOep	L3T	Digi-TC conversion	Jim Panetta
L3TOepSequences	L3T	Sequences for Digi-TC conversion	Jim Panetta
L3TOnline	L3T	Online format of TC's	Jim Panetta
L3TProxy	L3T	Proxies for Config data	Alexei Dvoretskii
L3Trigger	L3T	Binaries, also T0 estimator	Jim Panetta
L3TriggerDb	L3T	Binary for running L3 on event store	Jim Panetta
TrgConfig	TRG	Trigger Interface Configuration	Rainer Bartoldus
TrgLine	TRG	Abstraction of Lines for TrgConfig	Rainer Bartoldus
TrgParser	TRG	Parsing the TrgConfig format	Rainer Bartoldus
TrgProxy	TRG	Proxies to access trigger configuration	Rainer Bartoldus
TrgTags	TRG	Connect tagbits to L1/L3	Rainer Bartoldus
TrgTools	TRG	Tools for accessing trigger info.	Rainer Bartoldus

Trigger

• Trigger home page
• Trigger simulation documentation
• BABAR notes relating to Trigger
• Members of the TRIGGER BFMAIL group

OEP and Online

The OEP (Online Event Processing) subsystem of the online provides the framework within which Level 3 will execute, running in the IR-2 farm.

• Online Event Processing home page
• Online (IR-2) Farm home page (common hardware issues)
• Online home page
• Online phone meetings

The Level 3 Trigger Group

Meetings and Presentations

(including selected high-level trigger and other meetings)

2005:

Level 3 trigger meetings were changed to telephone conferences, beginning with the Jan. 2005 meeting. They will generally be held every Friday from 11:00 to 12:00, Pacific time.

Level 3 is sometimes a topic of discussion in the regular main trigger meetings. Links to those specific meetings will be included below.

[How to post advance material for Level 3 meetings...]

• August 12: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]

Past, 2005:

• August 05: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• July 29: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• July 22: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• July 15: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• July 08: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• July 01: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• June 24: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• June 3: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• May 13: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material:
• May 6: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 29: phone meeting 11:00-12:00 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]

Past, 2004:

• Aug 19: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Aug 05: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jul 22: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [L3 boost plots] [ Jamie's plots] [notes in Trigger directory]
• Jul 15: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jul 01: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jun 24: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jun 17: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jun 10: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Jun 03: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] [ L3 Trk efficiency plots, offline vs. online] Material: [notes in Trigger directory]
• May 27: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• May 13: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 29: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 22: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 15: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 8: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Apr 1: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Mar 18: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Mar 11: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]
• Mar 04: phone meeting 11:30-12:30 PST [ announcement] [ Tracking report] [agenda & phone instructions] Material: [notes in Trigger directory]
• Feb 26: phone meeting 11:30-12:30 PST [ announcement] [agenda & phone instructions] Material: [notes in Trigger directory]