The DZERO Level 3 DAQ System: Operation and Upgrades

Author

Garcia-Bellido, Aran ; Bose, Tulika ; Brooijmans, Gustaaf ; Chapin, Doug ; Cutts, David ; Fuess, Stuart ; Gadfort, Thomas ; Haas, Andrew ; Lee, William ; Rechenmacher, Ron ; Snyder, Scott ; Watts, Gordon ; Xie, Yunhe

Author_Institution

Washington Univ., Seattle

fYear

2007

fDate

April 29 2007-May 4 2007

Firstpage

1

Lastpage

5

Abstract

The D Level 3 data acquisition system for Run II of the Tevatron has been reliably operating since May 2002. Designed to handle average event sizes of 250 kilobytes at a rate of 1 kHz, the system has been upgraded to be able to process more events, doubling its typical output rate from 50 Hz to 100 Hz, while coping with higher event sizes at the beginning of high luminosity collider stores. The system routes and transfers event fragments from 63 VME crates to any of approximately 320 processing nodes. The addition of more farm nodes, the performance of the components, and the running experience are described here.

Keywords

data acquisition; high energy physics instrumentation computing; nuclear electronics; particle detectors; trigger circuits; DZERO Level 3 DAQ system; Tevatron Run II; data acquisition system; farm nodes; processing nodes; trigger systems; Data acquisition; Detectors; Ethernet networks; Event detection; Filters; Hardware; Laboratories; Physics; Routing; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Real-Time Conference, 2007 15th IEEE-NPSS

Conference_Location

Batavia, IL

Print_ISBN

978-1-4244-0866-5

Electronic_ISBN

978-1-4244-0867-2

Type

conf

DOI

10.1109/RTC.2007.4382775

Filename

4382775