A hardware and software overview of the Delphi contiguity trigger

Author

Darbo, G. ; Heck, B.W. ; Wildman, J.M.

Author_Institution

INFN, Genova, Italy

Volume

38

Issue

2

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

861

Lastpage

865

Abstract

The contiguity processor of the Delphi detector, which is composed of 12 Fastbus modules (one for each time-projection-chamber sector), is the main second-level track trigger component in the experiment. More than 3000 MIPS (million instructions per second) of processing power are achieved by 4608 processing elements (PEs) packed in specially designed application-specific integrated circuits. High interconnectivity among PEs (bidimensional lattice) and a highly parallel algorithm (contiguity mask) allow a three-dimensional vertex reconstruction less than 5 μs. An overview of the single-instruction multiple-data architecture together with the programming language and the interactive debugging tools for the processor are given

Keywords

physics computing; position sensitive particle detectors; trigger circuits; Delphi detector; Fastbus modules; bidimensional lattice; contiguity processor; interactive debugging tools; processing elements; second-level track trigger component; single-instruction multiple-data architecture; three-dimensional vertex reconstruction; time-projection-chamber; Application specific integrated circuits; Computer languages; Debugging; Detectors; Fastbus; Hardware; Integrated circuit interconnections; LAN interconnection; Lattices; Parallel algorithms;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.289401

Filename

289401