Hit-based displaced vertex implementation into FTF (ATR-19322) (!40064) · Merge requests · atlas / athena

MR for hit-based displaced vertex implementation

New MR after fixing stall due to data handles setup (previous MR: !40026 (closed))
JIRA: https://its.cern.ch/jira/browse/ATR-19322
Added hit-based DV in FastTrackFinder (FTF)
- A property ("doJseedHitDV") to switch on/off hit-based DV
- Seed directions taken from L1_J30 RoIs
- Collects space-points (dR<0.6 from seeds) and tracks (dR<1.0 from seeds), and association between them (whether the space point is used by track). Some quality cuts are applied to tracks.
- Fills 3 new EDMs to pass the following hypo (which is not yet implemented in this MR)
- The new EDMs are added in TrigEDM
- A timer to measure timing for this hit-based DV finding
With handful test events of MC ttbar, the timing and EDM size were
- Timing: ~45 ms average
- EDM size: ~45 kb/event
A report at ID Trigger Weekly 27 Jan https://indico.cern.ch/event/1001688/contributions/4206606/subcontributions/326295/attachments/2178796/3679812/UTT.2021.01.27.pdf

Hit-based displaced vertex implementation into FTF (ATR-19322)