Design, deployment and functional tests of the online event filter for the ATLAS experiment at LHC

The Event Filter (EF) selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. Its primary function is the reduction of data flow and rate to values acceptable by the mass storage operations and by the subsequent offline data reconstruction and analysis step...

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Veröffentlicht in:IEEE transactions on nuclear science Jg. 52; H. 6; S. 2846 - 2852
Hauptverfasser: Armstrong, S., dos Anjos, A., Baines, J.T.M., Bee, C.P., Biglietti, M., Bogaerts, J.A., Boisvert, V., Bosman, M., Caron, B., Casado, P., Cataldi, G., Cavalli, D., Cervetto, M., Comune, G., Muino, P.C., De Santo, A., Gomez, M.D., Dosil, M., Ellis, N., Emeliyanov, D., Epp, B., Etienne, F., Falciano, S., Farilla, A., George, S., Ghete, V., Gonzalez, S., Grothe, M., Kabana, S., Khomich, A., Kilvington, G., Konstantinidis, N., Kootz, A., Lowe, A., Luminari, L., Maeno, T., Masik, J., di Mattia, A., Meessen, C., Mello, A.G., Merino, G., Moore, R., Morettini, P., Nikitin, N., Nisati, A., Padilla, C., Panikashvili, N., Parodi, F., Reale, V.P., Pinfold, J.L., Pinto, P., Qian, Z., Resconi, S., Rosati, S., Sanchez, C., Santamarina, C., Scannicchio, D.A., Schiavi, C., Segura, E., de Seixas, J.M., Sivoklokov, S., Soluk, R., Stefanidis, E., Sushkov, S., Sutton, M., Tapprogge, S., Thomas, E., Touchard, F., Pinto, B.V., Vercesi, V., Werner, P., Wheeler, S., Wickens, F.J., Wiedenmann, W., Wielers, M., Zobernig, G.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.12.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
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ISSN:0018-9499, 1558-1578
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Abstract The Event Filter (EF) selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. Its primary function is the reduction of data flow and rate to values acceptable by the mass storage operations and by the subsequent offline data reconstruction and analysis steps. The computing instrument of the EF is organized as a set of independent subfarms, each connected to one output of the Event Builder (EB) switch fabric. Each subfarm comprises a number of processors analyzing several complete events in parallel. This paper describes the design of the ATLAS EF system, its deployment in the 2004 ATLAS combined test beam together with some examples of integrating selection and monitoring algorithms. Since the processing algorithms are not explicitly designed for EF but are adapted from the offline ones, special emphasis is reserved to system reliability and data security, in particular for the case of failures in the processing algorithms. Other key design elements have been system modularity and scalability. The EF shall be able to follow technology evolution and should allow for using additional processing resources possibly remotely located
AbstractList The Event Filter (EF) selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. Its primary function is the reduction of data flow and rate to values acceptable by the mass storage operations and by the subsequent offline data reconstruction and analysis steps. The computing instrument of the EF is organized as a set of independent subfarms, each connected to one output of the Event Builder (EB) switch fabric. Each subfarm comprises a number of processors analyzing several complete events in parallel. This paper describes the design of the ATLAS EF system, its deployment in the 2004 ATLAS combined test beam together with some examples of integrating selection and monitoring algorithms. Since the processing algorithms are not explicitly designed for EF but are adapted from the offline ones, special emphasis is reserved to system reliability and data security, in particular for the case of failures in the processing algorithms. Other key design elements have been system modularity and scalability. The EF shall be able to follow technology evolution and should allow for using additional processing resources possibly remotely located.
The Event Filter (EF) selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. Its primary function is the reduction of data flow and rate to values acceptable by the mass storage operations and by the subsequent offline data reconstruction and analysis steps. The computing instrument of the EF is organized as a set of independent subfarms, each connected to one output of the Event Builder (EB) switch fabric. Each subfarm comprises a number of processors analyzing several complete events in parallel. This paper describes the design of the ATLAS EF system, its deployment in the 2004 ATLAS combined test beam together with some examples of integrating selection and monitoring algorithms. Since the processing algorithms are not explicitly designed for EF but are adapted from the offline ones, special emphasis is reserved to system reliability and data security, in particular for the case of failures in the processing algorithms. Other key design elements have been system modularity and scalability. The EF shall be able to follow technology evolution and should allow for using additional processing resources possibly remotely located
Since the processing algorithms are not explicitly designed for EF but are adapted from the offline ones, special emphasis is reserved to system reliability and data security, in particular for the case of failures in the processing algorithms.
Author Soluk, R.
Tapprogge, S.
Stefanidis, E.
Gomez, M.D.
Vercesi, V.
Gonzalez, S.
Mello, A.G.
Segura, E.
Khomich, A.
Biglietti, M.
Bosman, M.
Merino, G.
Pinfold, J.L.
Touchard, F.
Maeno, T.
Ellis, N.
Resconi, S.
Meessen, C.
Wiedenmann, W.
Sutton, M.
Cavalli, D.
Morettini, P.
Rosati, S.
Schiavi, C.
Sushkov, S.
Dosil, M.
Etienne, F.
Padilla, C.
Falciano, S.
Zobernig, G.
Pinto, B.V.
Qian, Z.
Nisati, A.
Wickens, F.J.
Wielers, M.
Masik, J.
Muino, P.C.
Santamarina, C.
George, S.
Cataldi, G.
Emeliyanov, D.
Moore, R.
Grothe, M.
Pinto, P.
Armstrong, S.
Epp, B.
di Mattia, A.
Lowe, A.
Parodi, F.
Kabana, S.
De Santo, A.
Bogaerts, J.A.
Farilla, A.
Thomas, E.
Konstantinidis, N.
Sivoklokov, S.
Scannicchio, D.A.
Cervetto, M.
Ghete, V.
dos Anjos, A.
Boisvert, V.
Kilvington, G.
Reale, V.P.
Panikashvili, N.
Wheeler, S.
Comune, G.
Nikitin, N.
Kootz, A.
Werner, P.
Casado, P.
Bee, C.P.
Baines, J.T.M.
Sanchez, C.
de Seixas, J.M.
Caron, B.
Luminari, L.
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Snippet The Event Filter (EF) selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. Its primary function is the reduction...
Since the processing algorithms are not explicitly designed for EF but are adapted from the offline ones, special emphasis is reserved to system reliability...
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SubjectTerms Algorithm design and analysis
Algorithms
Architecture
Computer architecture
Construction
Data acquisition
Data analysis
data processing
Design engineering
Failure
Filters
High Energy Physics - Experiment
Independent component analysis
Instruments
Large Hadron Collider
Physics
Reconstruction
Reduction
Security
Switches
Testing
triggering
Title Design, deployment and functional tests of the online event filter for the ATLAS experiment at LHC
URI https://ieeexplore.ieee.org/document/1589288
https://www.proquest.com/docview/911991855
https://www.proquest.com/docview/28013355
https://www.proquest.com/docview/29226845
https://www.proquest.com/docview/896235809
https://in2p3.hal.science/in2p3-00145437
Volume 52
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