Title :
The LHCb muon control system the DAQ domain
Author :
Bocci, V. ; Cadeddu, S. ; Carletti, M. ; Deplano, C. ; Lai, A. ; Messi, F. ; Nobrega, R. ; Pinci, D.
Author_Institution :
Sezione di Roma 1, Rome
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
The LHCb Muon system consists of 122000 front-end channels, distributed on about 8000 front-end boards (on detector). 152 off detector boards (each containing 192 channels) gather information from front-end and send it to the DAQ and trigger systems. The Muon system is highly configurable and is conceived to allow a deep control of the behavior of the whole system during data taking. This results in a large number of configuration and status registers to be handled. The Muon control system, part of the LHCb experiment control system, is based on a PVSS II framework and is managed by a hierarchical finite state machine. We illustrate the control system architecture and the characteristics of its components, control units and device units. We also illustrate system performance in data communication, between the OPC servers and system electronics, obtained through a suitable design of dedicated firmware.
Keywords :
accelerator control systems; data acquisition; nuclear electronics; DAQ domain; LHCb experiment control system; LHCb muon control system; OPC servers; PVSS II framework; control system architecture; data communication; front-end channels; hierarchical finite state machine; system electronics; trigger system; Clocks; Communication system control; Control systems; Data acquisition; Detectors; Large Hadron Collider; Logic; Mesons; Microprogramming; Monitoring;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4436496
