The CLEO-III trigger: Calorimetry and tracking

Author

Bergfeld, T.J. ; Ernst, J.A. ; Gollin, G.D. ; Haney, M.J. ; Hans, R.M. ; Johnson, E.E. ; Selen, M.A. ; Siverts, M.B. ; Williams, J.B.

Author_Institution

Dept. of Phys., Illinois Univ., Urbana, IL, USA

Volume

1

fYear

1996

fDate

2-9 Nov 1996

Firstpage

426

Abstract

The CLEO-III Trigger provides a trigger decision every 42 ns, with a latency of approximately 2.5 μs. This paper describes the pipelined signal processing and pattern recognition schemes used by the calorimeter, and the axial and stereo portions of the drift chamber, to provide the information necessary to make these decisions. Field programmable gate arrays are used extensively to provide cluster filtering and location sorting for calorimetry, and path finding for tracking. Analog processing is also employed in the calorimetry to provide additional leverage on the problem. Timing information is extracted from both calorimetry and tracking

Keywords

detector circuits; drift chambers; field programmable gate arrays; nuclear electronics; pattern recognition; signal processing; trigger circuits; CLEO-III trigger; analog processing; calorimeter; cluster filtering; drift chamber; field programmable gate arrays; location sorting; path finding; pattern recognition schemes; pipelined signal processing; trigger decision; Array signal processing; Calorimetry; Data mining; Delay; Field programmable analog arrays; Field programmable gate arrays; Filtering; Pattern recognition; Sorting; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

0-7803-3534-1

Type

conf

DOI

10.1109/NSSMIC.1996.591018

Filename

591018