BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Physics-motivated event selection using the Level-1 Topological Tr
 igger at the ATLAS detector
DTSTART;VALUE=DATE-TIME:20230321T143000Z
DTEND;VALUE=DATE-TIME:20230321T145000Z
DTSTAMP;VALUE=DATE-TIME:20260517T063157Z
UID:indico-contribution-20331@indico.ific.uv.es
DESCRIPTION:Speakers: Jack Harrison (IFAE - Barcelona)\nAs we push to incr
 ease the instantaneous luminosity of the ATLAS detector\, strict requireme
 nts on events are needed in order to reduce the output rate to the desired
  1-1.5kHz. We can be clever about how we select events\; imposing topologi
 cal requirements through kinematic and angular cuts on combinations of par
 ticles allows us to further reduce the event rate without having to tighte
 n the individual trigger objects thresholds required. In Run 2\, the ATLAS
  detector successfully operated the Level-1 Topological trigger as part of
  the Level-1 Trigger system\, taking inputs from the calorimeter (L1Calo) 
 and muon systems (L1Muon). In parallel\, a bitwise simulation system ran w
 ithin the High-Level trigger (HLT) that acted as an important tool not onl
 y during commissioning\, but for monitoring and validation. Moving into Ru
 n 3 (Phase-1)\, a new L1Topo hardware system has been implemented\, and ha
 s been in commissioning during 2022 alongside the commissioning of the new
  L1Calo hardware system. During this time\, the L1Calo and L1Topo Run-2 sy
 stems have been running in parallel with the Phase-1 system\, allowing con
 tinuity of performance. New topological algorithms for Run 3 have been com
 pleted\, along with adaptations in the simulation framework for the new in
 puts from L1Muon and L1Calo as they became available. The motivation\, imp
 lementation and commissioning results of the L1Topo system in Run 2\, alon
 g with the status of the commissioning of the new L1Topo system in Run 3 w
 ill be shown.\n\nhttps://indico.ific.uv.es/event/6923/contributions/20331/
LOCATION:Universe 1001-Primera-1-1-1 - Paterna. Seminario
URL:https://indico.ific.uv.es/event/6923/contributions/20331/
END:VEVENT
END:VCALENDAR