The neural network first level trigger for the DIRAC experiment

Authors
Kokkas, P Steinacher, M Tauscher, L Vlachos, S
Citation
P. Kokkas et al., The neural network first level trigger for the DIRAC experiment, NUCL INST A, 471(3), 2001, pp. 358-367
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
471
Issue
3
Year of publication
2001
Pages
358 - 367
Database
ISI
SICI code
0168-9002(20011001)471:3<358:TNNFLT>2.0.ZU;2-I
Abstract
The neural network first level trigger for the DIRAC experiment at CERN is presented. Both the neural network algorithm used and its actual hardware i mplementation are described. The system uses the fast plastic scintillator information of the DIRAC spectrometer. In 210 ns it selects events with two particles having low relative momentum; such events are selected with an e fficiency of more than 0.94. The corresponding rate reduction for backgroun d events is a factor of 2.5. (C) 2001 Elsevier Science B.V. All rights rese rved.