Partitions and trigger supervision in Aleph

• Published in: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Nuclear Science; (USA) Vol. 36; no. 5; pp. 1464 - 1468
• Main Authors: Renardy, J.F., Amendolia, S.R., Arnault, C., Harvey, J., McPherson, G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: United States IEEE 01.10.1989; Institute of Electrical and Electronics Engineers
• Subjects: 430400 - Particle Accelerators- Storage Rings; 990220 - Computers, Computerized Models, & Computer Programs- (1987-1989); Assembly; COMPUTER CODES; COMPUTERIZED CONTROL SYSTEMS; CONTROL SYSTEMS; Data acquisition; Detectors; Electrons; Event detection; Face detection; Fastbus; GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; Hardware; High Energy Physics - Experiment; LEP STORAGE RINGS; PARTICLE ACCELERATORS; Physics; Positrons; Protocols; STORAGE RINGS
• ISSN: 0018-9499; 1558-1578
• DOI: 10.1109/23.41084

The Aleph data acquisition system is controlled by a set of protocols that are implemented both in software and on dedicated hardware. The authors describe these protocols, how they fulfil the design requirements, and the specific hardware supporting them. In particular, they give an overview of the Aleph readout and describe the readout controller, the transmission of trigger signals, the readout procedure, and the cable protocol. The authors discuss the requirements for partitioning Aleph, the topology constraints, and resource management. They detail the trigger supervisor, its functions, and the handling of errors.< >