PHENIX level-1 trigger system

J. G. Lajoie; F. K. Wohn; J. C. Hill; A. Petridis; L. Wood; H. D. Skank; W. D. Thomas; G. A. Sleege

PHENIX level-1 trigger system

J. G. Lajoie, F. K. Wohn, J. C. Hill, A. Petridis, L. Wood, H. D. Skank, W. D. Thomas, G. A. Sleege

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

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 beam-clock 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 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	IEEE Nuclear Science Symposium and Medical Imaging Conference
Publisher	IEEE
Pages	321-323
Number of pages	3
ISBN (Print)	0780350227
State	Published - 1999
Externally published	Yes
Event	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record - Toronto, Que, Can Duration: Nov 8 1998 → Nov 14 1998

Publication series

Name	IEEE Nuclear Science Symposium and Medical Imaging Conference
Volume	1

Conference

Conference	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
City	Toronto, Que, Can
Period	11/8/98 → 11/14/98

Cite this

@inproceedings{c20211f54a54457dbb93f7c850505e22,

title = "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 beam-clock 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 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 Wohn, {F. K.} and Hill, {J. C.} and A. Petridis and L. Wood and Skank, {H. D.} and Thomas, {W. D.} and Sleege, {G. A.}",

year = "1999",

language = "English",

isbn = "0780350227",

series = "IEEE Nuclear Science Symposium and Medical Imaging Conference",

publisher = "IEEE",

pages = "321--323",

booktitle = "IEEE Nuclear Science Symposium and Medical Imaging Conference",

note = "Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record ; Conference date: 08-11-1998 Through 14-11-1998",

}

Lajoie, JG, Wohn, FK, Hill, JC, Petridis, A, Wood, L, Skank, HD, Thomas, WD & Sleege, GA 1999, PHENIX level-1 trigger system. in IEEE Nuclear Science Symposium and Medical Imaging Conference. IEEE Nuclear Science Symposium and Medical Imaging Conference, vol. 1, IEEE, pp. 321-323, Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record, Toronto, Que, Can, 11/8/98.

TY - GEN

T1 - PHENIX level-1 trigger system

AU - Lajoie, J. G.

AU - Wohn, F. K.

AU - Hill, J. C.

AU - Petridis, A.

AU - Wood, L.

AU - Skank, H. D.

AU - Thomas, W. D.

AU - Sleege, G. A.

PY - 1999

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 beam-clock 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 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 beam-clock 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 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.

UR - http://www.scopus.com/inward/record.url?scp=0032597227&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0032597227

SN - 0780350227

T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference

SP - 321

EP - 323

BT - IEEE Nuclear Science Symposium and Medical Imaging Conference

PB - IEEE

T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record

Y2 - 8 November 1998 through 14 November 1998

ER -

PHENIX level-1 trigger system

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