Generator

• physics:
  • define samples - ok for now:  
    • DBD 250 GeV + 6f
    • general purpose Bhabhas / BSM signals etc. => later...
    • question from Daniel: status of tau polarisation in Whizard2 => can be checked on existing small test samples
      transverse tau polarisation: Akiya did some work, unclear status
    • Number of events for each processes: see table by Junping, basically 10ab-1.
      
    • still iterate on very high-rate processes (aa→2f, ae→3f, etc)
    • Radiative return to Z events: Generate inclusive 2f as before, plus dedicated samples later eg with photon in ME
      

  • Naming convention of whizard2 samples and directory structure → ok up to 4f, iterate 6f

    • all bWbW => "ttbar"

    • WW/ZZ/ WWZZ etc needs fleshing out
• general:

  • verify batch mode - done, apart from splitting single channel into several jobs

    => Whizards need to implement input of start event number > 1
  • tagged Whizard version => hoping for 2.8.3 in a week or two...
    
• ee: 
  • generate events
    • 2f (need splitting functionality, s. above)
    • 4f
    • 6f (define structure, s. above)
• ea / ae / aa:
  • create lumi spectra  and z-position of vertex distributions => done
  • more studies: phase space splitting between Zee and aa->2f
  • generate events: very high-rate processes, s. above
• aa overlay : => produced, on Dirac
• seeable pairs:  fine, on Dirac
  

Simulation

• selection / adjustment of DD4HEP detector model => done
• create ddsim steering / config files for 250 GeV 
• z vertex distributions for ee / ea / ae / aa => Remi has put them in ILDConfig:
  • https://github.com/iLCSoft/ILDConfig/blob/master/StandardConfig/production/Documentation/ProductionSettings.md#250-gev-vertex-parameters-for-250-seta-beam
• verify that photon cluster position effect is not due to cell geometry problem   => expected? Then calibration issue?
• simulate full pairs     => done            
• BeamCal bg-map for large (and small) 250 GeV models => done
• simulate seeable pairs
• simulate aa overlay
• simulate single particles for calibration   =>  LumiCal / LHCal currently not covered!

Reconstruction

• muon reconstruction failure at costheta = 0.6   => fixed by Remi
• photon cluster position / angle bias  => theta "just" a calibration/correction issue,   phi unclear? => gave up
  
• photon energy calibration consistent with Pandora calibration
        => seems to be ok as verified by Remi
• z0/d0 errors in fwd region => what was this about? => gave up
• tune BeamCal reconstruction → done
• calibrate LumiCal & LHCal => not done
• update parameters for beam spot constraint (LCFI) ???

• validation: ongoing ....
  

Production

• disk space (Cannot use tape back-end anymore) => estimate need: ~200 TB
    => mc-opt3 currently is 600-700 TB => 1 detector model = 350 TB
                    keep only 10% of REC files (but all SIM files) => 25% less ?
                   (hybrid simulation, reco only SiW + AHCAL)
• Installation of DESY new disk - done
  
• Save sim files of all events, but save REC files only for a fraction of events => implemented by Akiya
• Required statistics : 2ab-1 for each channel? => to be discussed, JL's understanding was we aim for numbers in JT's table for DSTs, while keeping only small fraction of REC evts

→ Estimate required disk space and CPU times for required statistics.
→ How about the large cross-section channel? (2f, 4f)
→ How about the 6f samples?

• update production scripts
  • make sure whizard2 lcio file splitting works=> Confirmed(Akiya)
  • Update for new directory structure and file name conventions.
    → Revisit file name convention : "wizard2" as "w2"? 
    ==> (Akiya) Same as the previous productions. Namely no generator name in production files.
  • simulate aa_lowpt and seeable pair background files. Update scripts to 250 GeV background files.
    ==> (Akiya) Small number of background files will be produced with ILCSoft/ILDConfig v02-00-02, for validation.(Done. 100evtsx20files produced)
• Need small whizard2 samples of various process type for development of production scripts.
            ==> (Akiya) Small samples (2f, 4f, aa_2f, 3f/5f ) have been produced.  Modifying production scripts to adapt new naming convention.
• Save tar-gzipped log files on tape directory.
• File save location : DESY-SRM as primary and KEK-SRM as secondary.

• BG samples situation

  	Gen TDR	Gen Set A	SIM TDR	Sim Set A
  aa_lowpt	Produced	Available on DIRAC (Tim)	Produced	To be produced with v02-01
  seeable pair	No	Available on DIRAC (Mikael)	No	To be produced with v02-01
  IP smear	No			Known, being used in production
  Nb of ExpBg			Available	Available

  
  

Solved issues (for new productions)

• muon reconstruction failure at costheta = 0.8 => TPC hits in simulation

• TPC point resolution