Asynchronous inputs and flip-flop metastability in the CLAS trigger at CEBAF

The impact of flip-flop metastability on the pipelined trigger of the CEBAF Large Acceptance Spectrometer (CLAS) detector at the Continuous Electron Beam Accelerator Facility (CEBAF) is studied. It is found that the newest emitter-coupled logic (ECL) flip-flops (ECLinPS) are much faster than older f...

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Bibliographic Details
Published in:IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) 1993-08, Vol.40 (4), p.680-684
Main Authors: Doughty, D.C., Lemon, S., Bonneau, P.
Format: Article
Language:English
Subjects:
430303 > Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
CEBAF ACCELERATOR
Clocks
Data acquisition
DATA ACQUISITION SYSTEMS
Detectors
Electron beams
ELECTRONIC CIRCUITS
Electrostatic, collective, and linear accelerators
Energy resolution
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Flip-flops
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
Metastasis
NUCLEAR PHYSICS
PARTICLE ACCELERATORS
PHYSICS
Pipelines
PULSE CIRCUITS 440103 > Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
READOUT SYSTEMS
SPECTROMETERS
Spectroscopy
SYNCHRONIZATION
TRIGGER CIRCUITS
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Summary:The impact of flip-flop metastability on the pipelined trigger of the CEBAF Large Acceptance Spectrometer (CLAS) detector at the Continuous Electron Beam Accelerator Facility (CEBAF) is studied. It is found that the newest emitter-coupled logic (ECL) flip-flops (ECLinPS) are much faster than older families (10 H) at resolving the metastable condition. This will allow their use in systems with asynchronous inputs without an extra stage of synchronizing flip-flops.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.256640