The PHENIX level-1 trigger system

J. G. Lajoie; F. K. Woh; J. C. Hill; A. Petridis; L. Wood; K. Cook; T. Plagge; H. D. Skank; W. D. Thomas; G. A. Sleege

doi:10.1109/RTCON.1999.842552

The PHENIX level-1 trigger system

J. G. Lajoie, F. K. Woh, J. C. Hill, A. Petridis, L. Wood, K. Cook, T. Plagge, H. D. Skank, W. D. Thomas, G. A. Sleege

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

The PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) will study the dynamics of ultra-relativistic heavy ion collisions and search for exotic states of matter, most notably the quark gluon plasma (QGP). Substantial event selectivity is needed at RHIC to enhance interesting events relative to more common ones and to satisfy the requirements of the data acquisition system. The first on-line screening is achieved by the Level-1 Trigger. The Level-1 Trigger is a beamclock parallel-pipeline system that uses six Local Level-1 (LL1) algorithms pertaining to the six fastest PHENIX subdetectors, followed by a Global Level-1 (GL1) system that processes encoded LL1 reduced-bit data to issue up to 128 triggers. The GLI system is also responsible for organizing the partitioned running of the PHENIX detector. The LL1 algorithms operate on raw data to produce a first estimate of the number of electrons, photons, muons and hadrons as well as the transverse energy, event multiplicity, interaction time and vertex. The latency of the entire system is less than 40 beam crossings. The Level-1 Trigger is implemented using custom-designed 9U VME-P format boards.

Original language	English
Title of host publication	SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999
Editors	Stuart C. Schaller
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	6-9
Number of pages	4
ISBN (Electronic)	078035463X, 9780780354630
DOIs	https://doi.org/10.1109/RTCON.1999.842552
State	Published - 1999
Externally published	Yes
Event	11th IEEE NPSS Real Time Conference - Computer Applications in Nuclear Particle and Plasma Physics, RT 1999 - Santa Fe, United States Duration: Jun 14 1999 → Jun 18 1999

Publication series

Name	SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999

Conference

Conference	11th IEEE NPSS Real Time Conference - Computer Applications in Nuclear Particle and Plasma Physics, RT 1999
Country/Territory	United States
City	Santa Fe
Period	06/14/99 → 06/18/99

Access to Document

10.1109/RTCON.1999.842552

Cite this

Lajoie, J. G., Woh, F. K., Hill, J. C., Petridis, A., Wood, L., Cook, K., Plagge, T., Skank, H. D., Thomas, W. D., & Sleege, G. A. (1999). The PHENIX level-1 trigger system. In S. C. Schaller (Ed.), SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999 (pp. 6-9). Article 842552 (SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RTCON.1999.842552

@inproceedings{ae28d09678524cc2a88ad65c88644100,

title = "The PHENIX level-1 trigger system",

abstract = "The PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) will study the dynamics of ultra-relativistic heavy ion collisions and search for exotic states of matter, most notably the quark gluon plasma (QGP). Substantial event selectivity is needed at RHIC to enhance interesting events relative to more common ones and to satisfy the requirements of the data acquisition system. The first on-line screening is achieved by the Level-1 Trigger. The Level-1 Trigger is a beamclock parallel-pipeline system that uses six Local Level-1 (LL1) algorithms pertaining to the six fastest PHENIX subdetectors, followed by a Global Level-1 (GL1) system that processes encoded LL1 reduced-bit data to issue up to 128 triggers. The GLI system is also responsible for organizing the partitioned running of the PHENIX detector. The LL1 algorithms operate on raw data to produce a first estimate of the number of electrons, photons, muons and hadrons as well as the transverse energy, event multiplicity, interaction time and vertex. The latency of the entire system is less than 40 beam crossings. The Level-1 Trigger is implemented using custom-designed 9U VME-P format boards.",

author = "Lajoie, {J. G.} and Woh, {F. K.} and Hill, {J. C.} and A. Petridis and L. Wood and K. Cook and T. Plagge and Skank, {H. D.} and Thomas, {W. D.} and Sleege, {G. A.}",

note = "Publisher Copyright: {\textcopyright} 1999 IEEE.; 11th IEEE NPSS Real Time Conference - Computer Applications in Nuclear Particle and Plasma Physics, RT 1999 ; Conference date: 14-06-1999 Through 18-06-1999",

year = "1999",

doi = "10.1109/RTCON.1999.842552",

language = "English",

series = "SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "6--9",

editor = "Schaller, {Stuart C.}",

booktitle = "SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999",

}

Lajoie, JG, Woh, FK, Hill, JC, Petridis, A, Wood, L, Cook, K, Plagge, T, Skank, HD, Thomas, WD & Sleege, GA 1999, The PHENIX level-1 trigger system. in SC Schaller (ed.), SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999., 842552, SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999, Institute of Electrical and Electronics Engineers Inc., pp. 6-9, 11th IEEE NPSS Real Time Conference - Computer Applications in Nuclear Particle and Plasma Physics, RT 1999, Santa Fe, United States, 06/14/99. https://doi.org/10.1109/RTCON.1999.842552

The PHENIX level-1 trigger system. / Lajoie, J. G.; Woh, F. K.; Hill, J. C. et al.
SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999. ed. / Stuart C. Schaller. Institute of Electrical and Electronics Engineers Inc., 1999. p. 6-9 842552 (SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Woh, F. K.

AU - Hill, J. C.

AU - Petridis, A.

AU - Wood, L.

AU - Cook, K.

AU - Plagge, T.

AU - Skank, H. D.

AU - Thomas, W. D.

AU - Sleege, G. A.

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Y1 - 1999

N2 - The PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) will study the dynamics of ultra-relativistic heavy ion collisions and search for exotic states of matter, most notably the quark gluon plasma (QGP). Substantial event selectivity is needed at RHIC to enhance interesting events relative to more common ones and to satisfy the requirements of the data acquisition system. The first on-line screening is achieved by the Level-1 Trigger. The Level-1 Trigger is a beamclock parallel-pipeline system that uses six Local Level-1 (LL1) algorithms pertaining to the six fastest PHENIX subdetectors, followed by a Global Level-1 (GL1) system that processes encoded LL1 reduced-bit data to issue up to 128 triggers. The GLI system is also responsible for organizing the partitioned running of the PHENIX detector. The LL1 algorithms operate on raw data to produce a first estimate of the number of electrons, photons, muons and hadrons as well as the transverse energy, event multiplicity, interaction time and vertex. The latency of the entire system is less than 40 beam crossings. The Level-1 Trigger is implemented using custom-designed 9U VME-P format boards.

AB - The PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) will study the dynamics of ultra-relativistic heavy ion collisions and search for exotic states of matter, most notably the quark gluon plasma (QGP). Substantial event selectivity is needed at RHIC to enhance interesting events relative to more common ones and to satisfy the requirements of the data acquisition system. The first on-line screening is achieved by the Level-1 Trigger. The Level-1 Trigger is a beamclock parallel-pipeline system that uses six Local Level-1 (LL1) algorithms pertaining to the six fastest PHENIX subdetectors, followed by a Global Level-1 (GL1) system that processes encoded LL1 reduced-bit data to issue up to 128 triggers. The GLI system is also responsible for organizing the partitioned running of the PHENIX detector. The LL1 algorithms operate on raw data to produce a first estimate of the number of electrons, photons, muons and hadrons as well as the transverse energy, event multiplicity, interaction time and vertex. The latency of the entire system is less than 40 beam crossings. The Level-1 Trigger is implemented using custom-designed 9U VME-P format boards.

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M3 - Conference contribution

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T3 - SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999

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BT - SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999

A2 - Schaller, Stuart C.

PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 14 June 1999 through 18 June 1999

ER -

Lajoie JG, Woh FK, Hill JC, Petridis A, Wood L, Cook K et al. The PHENIX level-1 trigger system. In Schaller SC, editor, SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999. Institute of Electrical and Electronics Engineers Inc. 1999. p. 6-9. 842552. (SANTA FE 1999 - 11th IEEE NPSS Real Time Conference, Conference Record, RT 1999). doi: 10.1109/RTCON.1999.842552

The PHENIX level-1 trigger system

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