Table of Contents
The PHENIX Online Computing System
PHENIX at a glance
Front-end block diagram
PHLOPS - The PHENIX Command Center
Online Computer Infrastructure
Software tools in use
Tools based on CORBA (Orbix)
Insulating Hardware with the Event Notifier
Excerpt from a configuration file
Data access and online monitoring
Data access policies
Event Iterators
ROOT is the main analysis/monitoring tool
A messaging system (for error messages)
How it’s done
“Message System-aware” code
Code snippet to give you the idea
A Publish-Subscribe scheme
EPICS with ROOT and Objectivity
Summary
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Author: Martin Purschke
Email: purschke@bnl.gov
Home Page: http://www.phenix.bnl.gov/~purschke
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