Title :
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
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;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591018
