Apr 1, 2000
Distributed Objects in Action - First Experience with the CLEO III Data
Acquisition and Control System
- Ohio State University
- Cornell University
- Syracuse University
- University of Minnesota
The new CLEO III experiment at the Cornell electron positron storage ring
CESR includes 4 layer silicon vertex detector and a novel ring image
Cherenkov detector. Driftchamber, E.M. calorimeter and muon chambers complete
the detector assembly. Overall more than half a million electronic channels
have to be read out and monitored. Detector configuration, data quality and
component monitoring, run control are only some of the Slow Control tasks
that have to be performed.
By the time of CHEP 2000 the initial commissioning run will be completed.
In our presentation we will focus on our experience with a large distributed
system with special emphasis on our success - and problems - with industry
standards such as CORBA (inter-platform communication), Java (remote access
via Web browser) and Objectivity (event and constants database). We will
discuss our design and highlight some of the special or unique features of
the CLEO III monitoring system.