The CLEO-III trigger: Level 1 decision and gating

T. J. Bergfeld; J. A. Ernst; G. D. Gollin; M. J. Haney; R. M. Hans; E. E. Johnson; C. L. Plager; C. Sedlack; M. A. Selen; J. B. Williams

The CLEO-III trigger: Level 1 decision and gating

T. J. Bergfeld, J. A. Ernst, G. D. Gollin, M. J. Haney, R. M. Hans, E. E. Johnson, C. L. Plager, C. Sedlack, M. A. Selen, J. B. Williams

Research output: Contribution to conference › Paper › peer-review

Abstract

The Level I Decision and Data Flow/Control subsystems of the CLEO-III Trigger produce and distribute a trigger decision every 42 ns based on input from calorimetry and tracking subsystems. This paper describes the free-running pipelined trigger decision logic that correlates axial and stereo tracking information, and combines time-aligned calorimetry information onto a common backplane. Programmable trigger decision boards monitor this backplane, and can be configured as desired to respond to a wide variety of trigger conditions. The resulting trigger decision is regulated by a throttling mechanism that allows the data acquisition system to modulate the trigger rate to maximize throughput without buffer overrun. A central signal distribution mechanism delivers the trigger decision and system clock to the front-end electronics.

Original language	English (US)
Pages	12/48-12/52
State	Published - 2000
Event	2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France Duration: Oct 15 2000 → Oct 20 2000

Other

Other	2000 IEEE Nuclear Science Symposium Conference Record
Country/Territory	France
City	Lyon
Period	10/15/00 → 10/20/00

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

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title = "The CLEO-III trigger: Level 1 decision and gating",

abstract = "The Level I Decision and Data Flow/Control subsystems of the CLEO-III Trigger produce and distribute a trigger decision every 42 ns based on input from calorimetry and tracking subsystems. This paper describes the free-running pipelined trigger decision logic that correlates axial and stereo tracking information, and combines time-aligned calorimetry information onto a common backplane. Programmable trigger decision boards monitor this backplane, and can be configured as desired to respond to a wide variety of trigger conditions. The resulting trigger decision is regulated by a throttling mechanism that allows the data acquisition system to modulate the trigger rate to maximize throughput without buffer overrun. A central signal distribution mechanism delivers the trigger decision and system clock to the front-end electronics.",

author = "Bergfeld, {T. J.} and Ernst, {J. A.} and Gollin, {G. D.} and Haney, {M. J.} and Hans, {R. M.} and Johnson, {E. E.} and Plager, {C. L.} and C. Sedlack and Selen, {M. A.} and Williams, {J. B.}",

note = "Funding Information: The authors express their thanks to the National Natural Science Foundation of China (51206194), the Foundation for University Young Key Teacher of Henan Province (2013GGJS-115) and the Key Science and Technology Program of Zhengzhou City (153PKJGG130) for their financial supports.; 2000 IEEE Nuclear Science Symposium Conference Record ; Conference date: 15-10-2000 Through 20-10-2000",

year = "2000",

language = "English (US)",

pages = "12/48--12/52",

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T2 - 2000 IEEE Nuclear Science Symposium Conference Record

AU - Bergfeld, T. J.

AU - Ernst, J. A.

AU - Gollin, G. D.

AU - Haney, M. J.

AU - Hans, R. M.

AU - Johnson, E. E.

AU - Plager, C. L.

AU - Sedlack, C.

AU - Selen, M. A.

AU - Williams, J. B.

N1 - Funding Information: The authors express their thanks to the National Natural Science Foundation of China (51206194), the Foundation for University Young Key Teacher of Henan Province (2013GGJS-115) and the Key Science and Technology Program of Zhengzhou City (153PKJGG130) for their financial supports.

PY - 2000

Y1 - 2000

N2 - The Level I Decision and Data Flow/Control subsystems of the CLEO-III Trigger produce and distribute a trigger decision every 42 ns based on input from calorimetry and tracking subsystems. This paper describes the free-running pipelined trigger decision logic that correlates axial and stereo tracking information, and combines time-aligned calorimetry information onto a common backplane. Programmable trigger decision boards monitor this backplane, and can be configured as desired to respond to a wide variety of trigger conditions. The resulting trigger decision is regulated by a throttling mechanism that allows the data acquisition system to modulate the trigger rate to maximize throughput without buffer overrun. A central signal distribution mechanism delivers the trigger decision and system clock to the front-end electronics.

AB - The Level I Decision and Data Flow/Control subsystems of the CLEO-III Trigger produce and distribute a trigger decision every 42 ns based on input from calorimetry and tracking subsystems. This paper describes the free-running pipelined trigger decision logic that correlates axial and stereo tracking information, and combines time-aligned calorimetry information onto a common backplane. Programmable trigger decision boards monitor this backplane, and can be configured as desired to respond to a wide variety of trigger conditions. The resulting trigger decision is regulated by a throttling mechanism that allows the data acquisition system to modulate the trigger rate to maximize throughput without buffer overrun. A central signal distribution mechanism delivers the trigger decision and system clock to the front-end electronics.

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The CLEO-III trigger: Level 1 decision and gating

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