Continuous and Real-Time Data Acquisition Embedded System for EAST

The Experimental Advanced Superconducting Tokamak (EAST) is planned to run 1000 s plasma discharges in the near future. In this steady-state operation, the data acquisition system (DAS) will be required to continuously acquire diagnostic signals, transfer diagnostic data from the digitizer front-end...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2010-04, Vol.57 (2), p.696-699
Main Authors: Li, S, Luo, Jiarong R, Wu, Yichun C, Li, Guiming M, Feng Wang, Yong Wang
Format: Article
Language:English
Subjects:
Cables
Data acquisition
Devices
Diagnostic systems
Digitization
Embedded system
Field programmable gate arrays
Information retrieval
Plasma diagnostics
Real time
Real time systems
Reduced instruction set computing
Servers
Steady-state
Superconductivity
Tokamak
Tokamak devices
Tokamaks
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Summary:The Experimental Advanced Superconducting Tokamak (EAST) is planned to run 1000 s plasma discharges in the near future. In this steady-state operation, the data acquisition system (DAS) will be required to continuously acquire diagnostic signals, transfer diagnostic data from the digitizer front-end to the data servers in order that the data is retrieved by the experimenters in real-time. Another disadvantage is that current data acquisition systems consist of many devices which are connected through various cables to provide the requested functionality. A study has been launched to identify the limitation of the present acquisition system with respect to long pulse operation. During the study, a new data acquisition system based on Field programmable gate array (FPGA) and Advanced RISC Machines (ARM) technologies has been developed in order to realise the continuous data acquisition and real-time data transmission during a long-pulse discharge. This device offers a flexible, portable, multi-channels, continuous simultaneous signal acquisition, with programmable gain and isolation amplifiers. This paper will describe the new data acquisition device in detail.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2010.2041251