CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-CONF-2006-018 ; ATL-COM-DAQ-2006-039
Title	A Fast Tracking Algorithm for the ATLAS Level 2 Trigger
Author(s)	Sutton, M ; Konstantinidis, N P ; Baines, J T M ; Emeliyanov, D ; Parodi, P ; Schiavi, C ; Drevermann, H
Publication	2006
Imprint	28 Jan 2006
Number of pages	4
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Tracking ; Trigger4
Abstract	A set of conceptually simple and robust algorithms for fast pattern recognition and track reconstruction using 3D space points developed for the ATLAS Level 2 (LVL2) Trigger at the LHC is presented. Results on execution time and physics performance demonstrating the effectiveness of this approach in a demanding, online trigger environment are presented. Both this strategy and a complimentary lookup table based strategy provided results appearing in the recent ATLAS High-Level Trigger, Data Acquisition and Controls Technical Design Report and were successfully implemented online during data taking for the recent ATLAS combined test beam.
Copyright/License	Preprint: (License: CC-BY-4.0)

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