THE PRETRIGGER SYSTEM OF THE OPAL EXPERIMENT AT LEP

Authors
ARIGNON M BELL KW BERLICH P FARTHOUAT P GALLNO P GILLIES JD GOPPERT R HILL JC JACOB FR JAROSLAWSKI S JOVANOVIC P JONES RWL KAWAMOTO T QUAST G ROBINSON D SCHAILE O SCHWICK C TSUKAMOTO T VASSILEV VT WEBER C WILSON GW
Citation
M. Arignon et al., THE PRETRIGGER SYSTEM OF THE OPAL EXPERIMENT AT LEP, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 333(2-3), 1993, pp. 330-341
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
333
Issue
2-3
Year of publication
1993
Pages
330 - 341
Database
ISI
SICI code
0168-9002(1993)333:2-3<330:TPSOTO>2.0.ZU;2-J
Abstract
A pretrigger system is described for running the OPAL detector at the LEP e+e- collider with more bunches than originally foreseen. A large number of low threshold pretrigger signals are formed by several indep endent components of the detector, and combined by a custom-built VME- based central pretrigger logic. Flexibility, high efficiency and high redundancy in all physics channels are all achieved with low additiona l deadtime, without any compromise to the trigger performance.