Design and implementation of the STAR experiment`s DAQ

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The STAR experiment is one of the two large detectors currently being built at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, Upton, New York, USA. The major issue of STAR`s DAQ is the large amount of data that has to be processed as fast as possible. The required data rate is of the order of 90 Gbits/s which has to be processed and scaled down to about 15 MBytes/s and stored to tape or other permanent archiving media. To be able to do so the STAR DAQ uses a custom built ASIC which preprocesses the raw data ... continued below

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7 p.

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Ljubicic, A. Jr.; Botlo, M. & Heistermann, F. December 1, 1997.

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Description

The STAR experiment is one of the two large detectors currently being built at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, Upton, New York, USA. The major issue of STAR`s DAQ is the large amount of data that has to be processed as fast as possible. The required data rate is of the order of 90 Gbits/s which has to be processed and scaled down to about 15 MBytes/s and stored to tape or other permanent archiving media. To be able to do so the STAR DAQ uses a custom built ASIC which preprocesses the raw data for later use by a software Level 3 trigger. The Level 3 trigger selects events to be archived depending on physics criteria based upon the particle track information extracted during Level 3 processing. The design presented is a massively parallel multi-processor system which consists of front end microprocessors hierarchically organized within a VME crate system. Each VME crate contains 6 custom made Receiver Boards with 3 Intel I960HD processors per board for a total of 18 processors per crate. The STAR`s TPC detector uses 24 such crates and the SVT detector will use 4 crates for a total of 504 microprocessors.

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7 p.

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INIS; OSTI as DE98001354

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  • 10. IEEE real time conference, Beaune (France), 22-26 Sep 1997

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  • Other: DE98001354
  • Report No.: BNL--64904
  • Report No.: CONF-9709140--
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 554864
  • Archival Resource Key: ark:/67531/metadc691812

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 6, 2015, 11:39 p.m.

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Ljubicic, A. Jr.; Botlo, M. & Heistermann, F. Design and implementation of the STAR experiment`s DAQ, article, December 1, 1997; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc691812/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.