Implementation and performance of the third level muon trigger of the ATLAS experiment at LHC

6533b857fe1ef96bd12b460d

RESEARCH PRODUCT

Implementation and performance of the third level muon trigger of the ATLAS experiment at LHC

C. Santamarina M. Dosil Stefan Tapprogge M. Biglietti C. Sanchez Monika Grothe M. Wielers G. Merino G. Kilvington M.d. Gomez N. Panikashvili G. Cataldi J. Masik Serguei Sivoklokov Francois Touchard V. M. Ghete Dmitry Emeliyanov Aleandro Nisati C. Padilla Christopher Bee A. Ventura S. R. Armstrong Gianpaolo Carlino M. Cervetto Speranza Falciano S. Sushkov V. Vercesi Lamberto Luminari E. G. Thomas A. Dos Anjos John Baines Mark Sutton J. A. Bogaerts Werner Wiedenmann A. Khomich Stefano Rosati J.m. De Seixas Nikolay Nikitin Per Werner Carlo Schiavi Roger Moore B. Caron E. Segura M. Bellomo A. Farilla B. Pinto H. Zobernig A. Lowe A. De Santo Fred Wickens Sonja Kabana Tadashi Maeno V. Boisvert J.l. Pinfold P. Casado Paolo Morettini A. Negri G. Comune A. Di Mattia M. Bosman P.c. Muino P. Pinto Simon George A.g. Mello D. Cavalli Silvia Resconi S.j. Wheeler Nicolas Ellis Francesco Conventi V. Perez-reale B. Epp D.a. Scannicchio F. Parodi Ketevi Assamagan Margherita Primavera E. Stefanidis R. Soluk Z. Qian S. Gonzalez C. Meessen Nikolaos Konstantinidis A. Kootz

subject

Nuclear and High Energy Physics Particle physics HLT Physics::Instrumentation and Detectors Muon Real-time computing event filter 01 natural sciences Data acquisition Atlas (anatomy)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]medicine Electrical and Electronic Engineering Discrete event simulation Detectors and Experimental Techniques Physics Muons Large Hadron Collider 010308 nuclear & particles physics Event (computing)Detector ATLAS experiment Muons.ATLAS Trigger medicine.anatomical_structure Nuclear Energy and Engineering Filter (video)Event Filter

description

The trigger system of the ATLAS experiment at the LHC aims at a high selectivity in order to keep the full physics potential while reducing the 40 MHz initial event rate imposed by the LHC bunch crossing down to /spl sim/100 Hz, as required by the data acquisition system. Algorithms working in the final stage of the trigger environment (Event Filter) are implemented to run both in a "wrapped" mode (reconstructing tracks in the entire Muon Spectrometer) and in a "seeded" mode (according to a dedicated strategy that performs pattern recognition only in regions of the detector where trigger hypotheses have been produced at earlier stages). The working principles of the offline muon reconstruction and identification algorithms (MOORE and MuId) implemented and used in the framework of the Event Filter are discussed in this paper. The reconstruction performance of these algorithms is presented for both modes in terms of efficiency, momentum resolution, rejection power and execution times on several samples of simulated single muon events, also taking into account the high background environment expected for ATLAS.

year	journal	country	edition	language
2006-04-01

10.1109/tns.2006.871504 http://cds.cern.ch/record/1035635