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The second level trigger of the ATLAS experiment at CERN's LHC

A. dos Anjos M. Abolins S. Armstrong J. T. Baines M. Barisonzi H. P. Beck C.P. Bee 1 M. Beretta M. Biglietti R. Blair A. Bogaerts V. Boisvert M. Bosman H. Boterenbrood D. Botterill S. Brandt B. Caron P. Casado G. Cataldi D. Cavalli M. Cervetto M. Ciobotaru G. Comune A. Corso-Radu E. Palencia Cortezon R. Cranfield G. Crone J. Dawson B. Di Girolamo A. Di Mattia M. Diaz Gomez R. Dobinson J. Drohan N. Ellis M. Elsing B. Epp Y. Ermoline F. Etienne 1 S. Falciano A. Farilla M. L. Ferrer D. Francis S. Gadomski S. Gameiro S. George V. Ghete P. Golonka S. González B. Gorini B. Green M. Grothe M. Gruwe S. Haas C. Haeberli Y. Hasegawa R. Hauser C. Hinkelbein R. Hughes-Jones P. Jansweijer M. Joos A. Kaczmarska K. Karr A. Khomich G. Kieft E. Knezo N. Konstantinidis K. Korcyl W. Krasny A. Kugel A. Lankford G. Lehmann M. Levine W. Li W. Liu A. Lowe L. Luminari T. Maeno M. Losada Maia L. Mapelli B. Martin R. Mclaren C. Meessen 1 C. Meirosu A. G. Mello G. Merino A. Misiejuk R. Mommsen P. Morettini G. Mornacchi E. Moyse M. Müller Y. Nagasaka A. Nairz K. Nakayoshi A. Negri N. Nikitin A. Nisati C. Padilla I. Papadopoulos F. Parodi V. Perez-Reale J. Petersen J. L. Pinfold P. Pinto G. Polesello B. Pope D. Prigent Z. Qian 1 S. Resconi S. Rosati D.A. Scannicchio C. Schiavi J. Schlereth T. Schoerner-Sadenius E. Segura J. M. Seixas T. Shears M. Shimojima S. Sivoklokov M. Smizanska R. Soluk R. Spiwoks S. Stancu C. Stanescu J. Strong S. Tapprogge L. Tremblet F. Touchard 1 V. Vercesi V. Vermeulen A. Watson T. Wengler P. Werner S. Wheeler F. J. Wickens W. Wiedenmann M. Wielers Y. Yasu M. Yu H. Zobernig M. Zurek
Abstract : The ATLAS trigger reduces the rate of interesting events to be recorded for off-line analysis in three successive levels from 40 MHz to /spl sim/100 kHz, /spl sim/2 kHz and /spl sim/200 Hz. The high level triggers and data acquisition system are designed to profit from commodity computing and networking components to achieve the required performance. In this paper, we discuss data flow aspects of the design of the second level trigger (LVL2) and present results of performance measurements
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A. dos Anjos, M. Abolins, S. Armstrong, J. T. Baines, M. Barisonzi, et al.. The second level trigger of the ATLAS experiment at CERN's LHC. IEEE Transactions on Nuclear Science, Institute of Electrical and Electronics Engineers, 2004, 51, pp.909-914. ⟨10.1109/TNS.2004.829977⟩. ⟨in2p3-00148815⟩

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