The DZERO DAQ/Online Monitoring System and Applications, Including an Active Auto-recovery Tool
Abstract
The DZERO experiment, located at the Fermi National Accelerator Laboratory, has recently started the Run 2 physics program. The detector upgrade included a new Data Acquisition/Level 3 Trigger system. Part of the design for the DAQ/Trigger system was a new monitoring infrastructure. The monitoring was designed to satisfy real-time requirements with 1-second resolution as well as non-real-time data. It was also designed to handle a large number of displays without putting undue load on the sources of monitoring information. The resulting protocol is based on XML, is easily extensible, and has spawned a large number of displays, clients, and other applications. It is also one of the few sources of detector performance available outside the Online System's security wall. A tool, based on this system, which provides for auto-recovery of DAQ errors, has been designed. This talk will include a description of the DZERO DAQ/Online monitor server, based on the ACE framework, the protocol, the auto-recovery tool, and several of the unique displays which include an ORACLE-based archiver and numerous GUIs.
Keywords
Cite
@article{arxiv.physics/0306195,
title = {The DZERO DAQ/Online Monitoring System and Applications, Including an Active Auto-recovery Tool},
author = {B. Angstadt and G. Brooijmans and D. Chapin and D. Charak and M. Clements and S. Fuess and A. Haas and R. Hauser and D. Leichtman and S. Mattingly and A. Kulyavtsev and M. Mulders and P. Padley and D. Petravick and R. Rechenmacher and G. Watts and D. Zhang},
journal= {arXiv preprint arXiv:physics/0306195},
year = {2009}
}
Comments
Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 8 pages, PDF. PSN THGT004. Original file can be found at http://d0.epe.phys.washington.edu/~gwatts/research/Conferences/2003-CHEP . Version 2: Fixed vauge wording describing MS pings