Author/Authors :
Sudo، نويسنده , , Antony S. and Nagayama، نويسنده , , Y. and Emoto، نويسنده , , M. and Nakanishi، نويسنده , , H. and Chikaraishi، نويسنده , , H. and Imazu، نويسنده , , S. and Iwata، نويسنده , , C. and Kogi، نويسنده , , Y. and Kojima، نويسنده , , M. and Komada، نويسنده , , S. and Kubo، نويسنده , , S. and Kumazawa، نويسنده , , R. and Mase، نويسنده , , Thiago A. and Miyazawa، نويسنده , , J. and Mutoh، نويسنده , , T. UEDA-NAKAMURA، نويسنده , , Y. and Nonomura، نويسنده , , M. and Ohsuna، نويسنده , , M. and Saito، نويسنده , , K. and Sakamoto، نويسنده , , R. and Seki، نويسنده , , T. and Shoji، نويسنده , , M. and Tsuda، نويسنده , , K. and Yoshida، نويسنده , , M. and Team، نويسنده , , LHD، نويسنده ,
Abstract :
Control, data acquisition, plasma monitoring and remote participation for steady state operation in the large helical device (LHD) are reviewed. By controlling the impedance matching of ICH, the plasma position and the electron density, high temperature plasma is confined for 1905s. The plasma parameters are monitored in real time. Data are continuously sampled by the YOKOGAWA WE7000 system and by the NATIONAL INSTRUMENTS CompactPCI system. Those data are managed by the object-oriented database system based on ObjectStore in distributed servers with mass storage. By using the multi protocol label switching-virtual private network (MPLS-VPN) technology, the local area network of LHD is expanded to the Japanese fusion community. This provides the remote participants with the same environment of the LHD control room.
Keywords :
Large helical device , Long pulse operation , Huge data amount handling , Continuous data acquisition , Remote Participation
