Rapid 3-D track reconstruction with the BABAR trigger upgrade

Author

Bailey, S.J. ; Brandenburg, G.W. ; Felt, N. ; Fries, T. ; Harder, S. ; Morii, M. ; Oliver, J.N. ; Sinev, N.B. ; Won, E.

Author_Institution

High Energy Phys. Lab., Harvard Univ., Cambridge, MA, USA

Volume

51

Issue

5

fYear

2004

Firstpage

2352

Lastpage

2355

Abstract

A new hardware trigger system based on tracks detected by a stereo drift chamber has been developed for the BABAR experiment at the Stanford Linear Accelerator Center. The z₀p_T Discriminator (ZPD) is capable of fast, three-dimensional reconstruction of charged particle tracks and provides rejection of background events due to beam particles interacting with the beam pipe at the first-level trigger. Over 1 gigabyte of data is processed per second by each ZPD module. Rapid track reconstruction has been realized using Xilinx Virtex-II FPGAs.

Keywords

data acquisition; drift chambers; field programmable gate arrays; high energy physics instrumentation computing; nuclear electronics; position sensitive particle detectors; BABAR experiment; BABAR trigger upgrade; Stanford Linear Accelerator Center; Xilinx Virtex-II FPGA; background event rejection; beam particle interaction; beam pipe; charged particle tracks; data acquisition system; data processing; first-level trigger; hardware trigger system; level-1 trigger; rapid 3-D track reconstruction; stereo drift chamber; three-dimensional reconstruction; z₀p_T discriminator module; Current measurement; Data acquisition; Discrete cosine transforms; Field programmable gate arrays; Hardware; Linear accelerators; Optical fibers; Particle beams; Particle tracking; Physics; BaBar; ZPD; level-1 trigger; tracking;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2004.834708

Filename

1344336