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New Developments in the Computer Complex System for the JFT-2M Tokamak

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18 Author(s)
Oyabu, Isao ; Mitsubishi Electric Corporation 2-2-3, Marunouchi Chiyoda-ku Tokyo Japan ; Yasuno, Tohru ; Ikeda, Kazuo ; Adachi, Kazuo
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The JFT-2M computer complex system of the Japan Atomic Energy Research Institute (JAERI) consists of a data acquisition system and a plasma control system. The data acquisition system is composed of a CAMAC serial highway, a front-end minicomputer, a super-minicomputer and their peripherals. The system constitutes a definite hierarchical structure. This provides for easy expansion and maintenance as well as for improved RAS (reliability, availability and serviceability) functions and man-machine interface capabilities. The system permits unified control and high quality analysis of experimental data from the JFT-2M tokamak, processing 1.2 megabytes of data in less than 3 minutes. The plasma control system is made up of a pre-programmed minicomputer for current form pattern generation, an analog computer for high-speed plasma control, a local data logger, and thyristor power supplies. This system controls poloidal coil current by real-time feedback method. With a learning control function added to it, the system can effectively correct steady-state deviations.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:34 ,  Issue: 6 )

Date of Publication:

Dec. 1987

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