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  Track finding at 10-MHz hadronic event rate

Bruinsma, M., Fleckenstein, H., Gerndt, E. K. E., Flammer, J., Michetti, A., Negri, I., et al. (2002). Track finding at 10-MHz hadronic event rate. IEEE Transactions on Nuclear Science, 49(2), 347-356.

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 Creators:
Bruinsma, M.1, Author
Fleckenstein, H.1, Author
Gerndt, E. K. E.1, Author
Flammer, J.1, Author
Michetti, A.1, Author
Negri, I.1, Author
Norenberg, M.1, Author
Ressing, D.1, Author
Riu, I.1, Author
Rothe, C.1, Author
Somov, A.1, Author
Glass, J.1, Author
Gropel, A.1, Author
Hahnel, C.1, Author
Manner, R.1, Author
Pernack, R.1, Author
Popov, V.1, Author
Schwingenheuer, B.2, Author              
Affiliations:
1NIHKEF H, NL-1009 DB Amsterdam, Netherlands; DESY, D-22603 Hamburg, Germany; Univ Mannheim, D-68131 Mannheim, Germany; Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany; ITEP, Moscow, Russia, ou_persistent22              
2Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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Free keywords: first-level trigger (FLT); Hera-B; latency; pretrigger; rate; TDU; TFU; TPU; tracking; trigger
 Abstract: Hera-B is a fixed target experiment using a halo target inside the HERA proton ring to generate B mesons in 920 GeV proton- nucleus interactions. The first-level trigger (FLT) (see Table I for a list of the acronyms used in this paper) of the experiment has to reduce the primary 10-MHz input rate by a factor 200 in less than 10 mus to make it acceptable to the second level trigger (SLT). The trigger strategy is based on the tracking of charged particles and on the reconstruction of their kinematic parameters. The combination of track pairs can also be used for the final decision. A parallel and pipelined set of approximately 60 dedicated boards was designed and built to perform this job. In this paper, the working principle of the system and some results obtained by analyzing the data collected during the run in the year 2000 are described.

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Language(s): eng - English
 Dates: 2002-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 28206
ISI: 000175820900005
 Degree: -

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Title: IEEE Transactions on Nuclear Science
  Alternative Title : IEEE Trans. Nucl. Sci.
Source Genre: Journal
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Pages: - Volume / Issue: 49 (2) Sequence Number: - Start / End Page: 347 - 356 Identifier: ISSN: 0018-9499