Generator

• physics:
  • define samples:  
    • DBD 
      + WIMP analysis samples (signal & background)?
      + Higgsinos? Jackies or Hales?
    • how about 6f? Not generated for DBD at 250 GeV, but processes like WWZ and vvWW etc should in principle be open?
    • general purpose Bhabhas?
    • 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.  Especially large Xsect. processes, such as 2f, 1f, 3f.
  • Radiative return to Z events. Generate separately or generate all process together.
  • Naming convention of whizard2 samples and directory structure → ok up to 4f, iterate 6f
• general:
  • verify batch mode
  • tag Whizard version?
• ee: 
  • generate events
    • 2f
    • 4f
    • 6f
• ea / ae / aa:
  • create lumi spectra  and z-position of vertex distributions => done
  • generate events!
• aa overlay : waiting for Tim... => remind.... => produced, on Dirac
  
• seeable pairs:  fine, on Dirac
  

Simulation

• selection / adjustment of DD4HEP detector model
  •  use the existing ILD_l5_vo2 => no validation needed
• 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            => tune BeamCal reco!
  • need to create BeamCal bg-map for large (and small) 250 GeV models
    • w/ and w/o anti-DID
    • for standard reco use same as for 500 GeV (w/ anti-DID ?)
• simulate seeable pairs
• simulate aa overlay
• simulate single particles for calibration   => verify that LumiCal / LHCal are covered!

Reconstruction

• solution unknown:
  • muon reconstruction failure at costheta = 0.6   => needs 4 FTE weeks =>Moritz
  • photon cluster position / angle bias  => theta "just" a calibration/correction issue,   phi unclear? => Daniel
  • photon energy calibration consistent with Pandora calibration
          => needs deep thinking on Pandora calibration strategy, Daniel will take a look once tautau benchmark is done
  • z0/d0 errors in fwd region => on a good way, fix requires time?
• solution / procedure known:
  • tune BeamCal reconstruction → ongoing (Moritz)
  • calibrate LumiCal & LHCal ???
  • update parameters for beam spot constraint (LCFI)
• validation!

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 ?
• 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?
  → 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	small test sample w. v02-00-02 produced
  seeable pair	No	Available on DIRAC (Mikael)	No	small test sample w. v02-00-02 produced
  IP smear	No			Known, beging used in production
  Nb of ExpBg			Available	Not yet

Solved issues (for new productions)

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

• TPC point resolution