量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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Remote experiment with WEST tokamak in CEA Cadarache from ITER Remote Experimentation Centre (REC) inRokkasho had been successfully carried out under the agreement between the Government of Japan and theEuropean Atomic Energy Community for the joint implementation of the Broader Approach (BA) activities in thefield of fusion energy research. The WEST and the REC sites were connected with the international broadbandnetwork for science and education of SINET, GÉANT and RENATER. Due to a long distance over 10,000 km oftwo sites, the latency was about 200 ms (round trip time) in total via the direct line between EU and Japan ofSINET5. Based on the communication between local and remote participants, plasma discharges were success-fully executed repeatedly according to the pulse schedule produced by remote Session Leader after the approvalby Engineer in Charge on WEST site. Intershot analyses were successfully executed during the pulse interval onan analysis server prepared in Partners network in the WEST for external collaborator. Full function required forthe remote experiments were successfully demonstrated in the large size tokamak facility, WEST. For remoteparticipation of ITER, however, it is expected that the amount of experimental data and the number of remoteparticipations will become very large. Distributed database system based on data replication using high-speeddata transferring method and distributed computing resources in local and remote sites are proposed as apossible solution in ITER.
Remote experiment with WEST from ITER Remote Experimentation Centre
