Published September 1, 1993 | Version v1
Journal article Metadata-only

The pretrigger system of the OPAL experiment at LEP

Creators

  • 1. Fakultaet fuer Physik, Albert Ludwigs Univ., Freiburg (Germany)
  • 2. CERN, European Organisation for Particle Physics, Geneva (Switzerland)
  • 3. Cavendish Lab., Cambridge (United Kingdom)
  • 4. School of Physics and Space Research, University of Birmingham (United Kingdom)
  • 5. Universitaet Hamburg/DESY, 2. Inst. fuer Experimental Physik, Hamburg (Germany)

Description

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 independent 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 additional deadtime, without any compromise to the trigger performance. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
333
Journal Issue
2-3
Journal Page Range
p. 330-341.
ISSN
0168-9002
CODEN
NIMAER

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
24075558
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ANNIHILATION; BEAM BUNCHING; CALORIMETERS; COLLIDING BEAMS; DEAD TIME; DRIFT CHAMBERS; EFFICIENCY; ELECTRON-POSITRON INTERACTIONS; ELECTRONIC CIRCUITS; ELECTRONS; GEV RANGE 10-100; LEP STORAGE RINGS; LEPTONIC DECAY; LOGIC CIRCUITS; MONITORING; MUON PAIRS; MUONS MINUS; MUONS PLUS; NEUTRAL-CURRENT INTERACTIONS; PAIR PRODUCTION; POSITRONS; QUARKS; READOUT SYSTEMS; REMOTE CONTROL; SYNCHRONIZATION; TAU PARTICLES; TRIGGER CIRCUITS; WEAK HADRONIC DECAY; Z NEUTRAL BOSONS
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BEAM DYNAMICS; BEAMS; BOSONS; CONTROL; DECAY; DYNAMICS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HEAVY LEPTONS; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MATTER; MEASURING INSTRUMENTS; MECHANICS; MULTIWIRE PROPORTIONAL CHAMBER; MUONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; POSTULATED PARTICLES; PROPORTIONAL COUNTERS; PULSE CIRCUITS; RADIATION DETECTORS; STORAGE RINGS; TIMING PROPERTIES; WEAK INTERACTIONS; WEAK PARTICLE DECAY