Talks

• L3 Muon was approved to run online by the Trigger Board. In the next trigger list (10.2) we shall have new stand-alone local muon triggers for high p_t single muons and matched central_track-local_muon triggers for low p_t single muons. For details see:
  • Local Muon and Track Match Certification: Martin Wegner
  • Proposed new triggers: Terry Wyatt
  • The to do list for L3Muon includes:
    • Doing something about the region at the end of the central muon system where the integral B.dl is small and the local p_t is grossly overestimated when the track fit fails.
    • Restoring the option to take the highest p_t matched central track rather than the best chisquared.
    • Look at timing cut to remove cosmics. (Potentially dangerous if scintillators are poorly calibrated.)
    • Study dependance of matching efficiency on relative polarity of toroid/solenoid, which is currently unknown to L3.
• Status of preparations for p15:
  • gcc compiler compliance: Angela Bellavance
    
    • Angela has fixed ~20 packages, including some that had logical errors highlighted by gcc compilation errors.
    • She will make a log of the packages she has fixed available.
    • Time estimate for a first working(*) test release is about two weeks. (*) Working means that it will compile and hopefully run in -l3only mode without crashing (too often) and we can start serious testing.
  • Track-based 3-D primary vertex finding: Chris Barnes
    On track for p15. Action items:
    • Talk scheduled for the collaboration week meeting.
    • May be that IP-based b-tagger will use beam spot only in first instance?
    • Per and Chris will get p_t dependent track errors implemented.
  • L3 configuration information via COOR: Michiel Sanders.
    On track for p15. New COOR command: l3update, needs to go into trigger list. Action item:
    • Michiel and Terry will talk to Elizabeth. Does this need to go into trigger database? Update to .xml generator required.
  • CPS calibration: Nothing heard from Andre Turcot or Yi Jiang concerning status.
  • Refined treatment of electron shower shape: will not make it for p15.
  • Steps to make a new package (to define the physics_results): Chris Barnes
    A user's guide: Please use it to make your package!
  • Discussion: What are our timescales for getting stuff ready for p15?
    • Two weeks time we have a running version of test release and compatible trigger list for -l3only tests.
    • Aim to be ready for cut of p15 at end of February.
    • Other than things on the above list please do not release ANYTHING into the test release without first consulting with Jon, Angela, Dan and Terry.
  
  

Scribe: Terry Wyatt.