NIFS-TECH-10

FULL TEXT (PDF, 519 KB)


Author(s):

H. Nakanishi, M. Kojima and LABCOM Group

Title:

Design for Real-Time Data Acquisition Based on Streaming Technology

Date of publication:

Apr. 2001

Key words:

LHD, data streaming, CompactPCI, digitizer front-end, real-time data acquisition

Abstract:

For the LHD project a long-pulse plasma experiment of one-hour duration is planned. In this quasi steady-state operation, the data acquisition system will be required to continuously transfer the diagnostic data from the digitizer front-end and display them in real-time. The CompactPCI standard is used to replace the conventional CAMAC digitizers in LHD, because it provides good functionality for real-time data streaming and also a connectivity with modern PC technology. The digitizer scheme, interface to the host computer, adoption of data compression, and downstream applications are discussed in detail to design and implement this new real-time data streaming system for LHD plasma diagnostics.

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