Context Diagram

The following context diagram, derived from the union of all use cases, shows the context in which the Experiment Control sub-system must operate.

Actors

The following are the definitions of the actors in the context diagram above.

• Operator - A person who is accessing the experiment control system via a terminal.
• DAQ - The sub-system that gathers data from the DOM and writes it to files.
• TWR - The sub-system that gathers data from AMANDA and writes it to files.
• sn - The sub-system that gathers data from the DAQ and searches it for SN events.
• PnF - The sub-system that gathers data from the DAQ, processes it and writes it out to SPADE for transimission over the satellite and storage to tape.
• SPADE - The sub-system that transfers files from the South Pole to the data warehouse are the University of Wisconsin, Madison.
• Cluster - The sub-system that monitors all of IceCube's computing systems at the South Pole.
• Status Web Site - A Collection of XML, XSL and HTML pages that display the current status and history of the detector.
• Run Summary DBMS - The DBMS that stores summaries of the run.
• Flasher DBMS - The DBMS that stores configurations use in flasher runs.
• email - An email sub-system that sends out email messages to a list of recipients.