Experience from ASDEX Upgrade discharge control management for long pulse operation

摘要

Preprogrammed discharge contro1 method and static experiment scheduling traditionally used with short-pulse experiment operation cycles are not compatible with requirements aiming at (near) steady state operation. An event-driven discharge control method is needed to handle deviations from the experiment programme without terminating the discharge. A dynamic experiment scheduling method is required to insert or take away experiments in a running discharge. To support these methods to operate the machine, data acquisition needs a close integration into the control, supporting calculation and exchange of processed quantities and state information, and into the experiment operation, supporting self monitoring and exchange of resource availability and configuration informa- tion. These functions must be performed in parallel with the concurrent execution of the data acquisitions front-end control, data sampling, data processing and reduction and archiving.