Review of the ASDEX Upgrade Data Acquizition Environment - Present Operation and Future Requirements
The data acquisition environment of the ASDEX Upgrade fusion experiment was designed in the late 1980's to handle a predicted quantity of 8 Mbytes of data per discharge. After 7 years of operation a review of the whole data acquizition and analysis environment shows what remains of the original design ideas. Comparing the original 15 diagnostics with the present set of 250 diagnostic datasets generated per shot shows how the system has grown.Although now a vast accumulation of functional parts, the system still works in a stable manner and is maintainable. The underlying concepts affirming these qualities are modularity and compatibility. Modularity ensures that most parts of the system can be modified without affecting others. Standards for data structures and interfaces between components and methods are the prerequizites which make modularity work.The experience of the last few years shows that, besides the standards achieved, new, mainly real-time wavelet analysis allowing adapted sampling rates; real-time data exchange between diagnostics and control; real-time networks allowing flexible computer coupling to permit interplay between different components; object-oriented programming concepts and databases are required for readily adaptable software modules. A final assessment of our present data processing situation and future requirements shows that modern information technology methods gave to be applied more intensively to provide the most flexible means to improve the interaction of all components on a large fusion device.
Bibliographic Reference: Article: Fusion Engineering and Design, 43(1998), 247-258
Record Number: 199910368 / Last updated on: 1999-03-12
Original language: en
Available languages: en