Using Feedback to Control Deadtime in the CDF Trigger System

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The CDF experiment uses a three-level trigger system to select events produced during p{bar p} collisions. As the luminosity of the Tevatron accelerator falls by a factor of four over a 24 hour period, trigger selections are adjusted automatically in order to make full use of the data processing bandwidth. The selections are made to maximize high purity triggers and keep the deadtime as low as possible at any given luminosity throughout the entire course of a run. We describe the algorithms used to obtain these goals and how the changing conditions are accounted for in the analysis of the ... continued below

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3 pages

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Torretta, D. April 1, 2007.

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The CDF experiment uses a three-level trigger system to select events produced during p{bar p} collisions. As the luminosity of the Tevatron accelerator falls by a factor of four over a 24 hour period, trigger selections are adjusted automatically in order to make full use of the data processing bandwidth. The selections are made to maximize high purity triggers and keep the deadtime as low as possible at any given luminosity throughout the entire course of a run. We describe the algorithms used to obtain these goals and how the changing conditions are accounted for in the analysis of the data.

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3 pages

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  • Presented at 15th IEEE Real Time Conference 2007 (RT 07), Batavia, Illinois, 29 Apr - 4 May 2007.

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  • Report No.: FERMILAB-CONF-07-126-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 909893
  • Archival Resource Key: ark:/67531/metadc888772

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Sept. 26, 2017, 12:27 p.m.

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Torretta, D. Using Feedback to Control Deadtime in the CDF Trigger System, article, April 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc888772/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.