Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.

An algorithm to search for isolated high pT tracks in the ATLAS precision tracker suitable for use in the LVL2 trigger is described. A histogramming method employing a Hough transform is used to select sets of points forming track candidates. For each selected set of points, fits are performed to al...

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Detalles Bibliográficos
Autores principales: Baines, J T M, Dankers, R J, Sivoklokov, S Yu
Lenguaje:eng
Publicado: 1999
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/683831
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author Baines, J T M
Dankers, R J
Sivoklokov, S Yu
author_facet Baines, J T M
Dankers, R J
Sivoklokov, S Yu
author_sort Baines, J T M
collection CERN
description An algorithm to search for isolated high pT tracks in the ATLAS precision tracker suitable for use in the LVL2 trigger is described. A histogramming method employing a Hough transform is used to select sets of points forming track candidates. For each selected set of points, fits are performed to all combinations of one point per detection plane. The best candidate is chosen on the basis of the fit residuals. The algorithm has been implemented in the t2scFex package of the ATRIG trigger simulation program and also for benchmarking studies in a stand-alone program SCTFEX. Efficiency, fake track rate and timing measurements are presented for a number of algorithm options.
id cern-683831
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-6838312019-09-30T06:29:59Zhttp://cds.cern.ch/record/683831engBaines, J T MDankers, R JSivoklokov, S YuPerformance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.Detectors and Experimental TechniquesAn algorithm to search for isolated high pT tracks in the ATLAS precision tracker suitable for use in the LVL2 trigger is described. A histogramming method employing a Hough transform is used to select sets of points forming track candidates. For each selected set of points, fits are performed to all combinations of one point per detection plane. The best candidate is chosen on the basis of the fit residuals. The algorithm has been implemented in the t2scFex package of the ATRIG trigger simulation program and also for benchmarking studies in a stand-alone program SCTFEX. Efficiency, fake track rate and timing measurements are presented for a number of algorithm options.ATL-DAQ-99-013oai:cds.cern.ch:6838311999-03-31
spellingShingle Detectors and Experimental Techniques
Baines, J T M
Dankers, R J
Sivoklokov, S Yu
Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title_full Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title_fullStr Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title_full_unstemmed Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title_short Performance of a LVL2 Trigger Feature Extraction Algorithm for the Precision Tracker.
title_sort performance of a lvl2 trigger feature extraction algorithm for the precision tracker.
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/683831
work_keys_str_mv AT bainesjtm performanceofalvl2triggerfeatureextractionalgorithmfortheprecisiontracker
AT dankersrj performanceofalvl2triggerfeatureextractionalgorithmfortheprecisiontracker
AT sivoklokovsyu performanceofalvl2triggerfeatureextractionalgorithmfortheprecisiontracker

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