Fast Tracking for the ATLAS LVL2 Trigger

We present a set of algorithms for fast track reconstruction at the second level (LVL2) trigger of ATLAS, using three-dimensional space points (= hits) from the silicon trackers. The strategy is to determine the position z_0 of the interesting pp interaction along the beam axis prior to any track re...

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Detalles Bibliográficos
Autores principales: Baines, J T M, Drevermann, H, Emeliyanov, D, Konstantinidis, N P, Parodi, F, Schiavi, C, Sutton, M
Lenguaje:eng
Publicado: CERN 2005
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.5170/CERN-2005-002.246
http://cds.cern.ch/record/803143
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author Baines, J T M
Drevermann, H
Emeliyanov, D
Konstantinidis, N P
Parodi, F
Schiavi, C
Sutton, M
author_facet Baines, J T M
Drevermann, H
Emeliyanov, D
Konstantinidis, N P
Parodi, F
Schiavi, C
Sutton, M
author_sort Baines, J T M
collection CERN
description We present a set of algorithms for fast track reconstruction at the second level (LVL2) trigger of ATLAS, using three-dimensional space points (= hits) from the silicon trackers. The strategy is to determine the position z_0 of the interesting pp interaction along the beam axis prior to any track reconstruction and then retain only groups of hits which point back to that z_0 and perform combinatorial tracking only inside those groups. We give results and discuss the advantages of this approach, which is generic enough to be applicable to other multi-collision experiments. We also make a qualitative comparison with a complementary approach which is based on Look-Up Tables (LUT) and is also used in ATLAS.
id cern-803143
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
publisher CERN
record_format invenio
spelling cern-8031432019-09-30T06:29:59Zdoi:10.5170/CERN-2005-002.246http://cds.cern.ch/record/803143engBaines, J T MDrevermann, HEmeliyanov, DKonstantinidis, N PParodi, FSchiavi, CSutton, MFast Tracking for the ATLAS LVL2 TriggerDetectors and Experimental TechniquesWe present a set of algorithms for fast track reconstruction at the second level (LVL2) trigger of ATLAS, using three-dimensional space points (= hits) from the silicon trackers. The strategy is to determine the position z_0 of the interesting pp interaction along the beam axis prior to any track reconstruction and then retain only groups of hits which point back to that z_0 and perform combinatorial tracking only inside those groups. We give results and discuss the advantages of this approach, which is generic enough to be applicable to other multi-collision experiments. We also make a qualitative comparison with a complementary approach which is based on Look-Up Tables (LUT) and is also used in ATLAS.CERNATL-DAQ-CONF-2005-001ATL-COM-DAQ-2004-028oai:cds.cern.ch:8031432005
spellingShingle Detectors and Experimental Techniques
Baines, J T M
Drevermann, H
Emeliyanov, D
Konstantinidis, N P
Parodi, F
Schiavi, C
Sutton, M
Fast Tracking for the ATLAS LVL2 Trigger
title Fast Tracking for the ATLAS LVL2 Trigger
title_full Fast Tracking for the ATLAS LVL2 Trigger
title_fullStr Fast Tracking for the ATLAS LVL2 Trigger
title_full_unstemmed Fast Tracking for the ATLAS LVL2 Trigger
title_short Fast Tracking for the ATLAS LVL2 Trigger
title_sort fast tracking for the atlas lvl2 trigger
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.5170/CERN-2005-002.246
http://cds.cern.ch/record/803143
work_keys_str_mv AT bainesjtm fasttrackingfortheatlaslvl2trigger
AT drevermannh fasttrackingfortheatlaslvl2trigger
AT emeliyanovd fasttrackingfortheatlaslvl2trigger
AT konstantinidisnp fasttrackingfortheatlaslvl2trigger
AT parodif fasttrackingfortheatlaslvl2trigger
AT schiavic fasttrackingfortheatlaslvl2trigger
AT suttonm fasttrackingfortheatlaslvl2trigger

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