Speaker
Kwon Giil
(Control team)
Description
To achieve the real time controllability of plasma, real-time network is required in fusion experiments place. KSTAR Plasma control system(PCS) adopted the reflective memory (RFM) as a real time network. Since RFM based network has low latency and low jitter. However, KSTAR is also adopted Synchronous Data bus Network (SDN) as real time network to provide real time network to fueling system. Since the performance of SDN is comparable to RFM and SDN can be implemented by existing 10Gb Ethernet network. SDN is ITER real time network based on UDP multicast atop 10GbE cut-through packet switching infrastructure. To provide the connectivity of between these real-time network, we developed the translator between RFM and SDN. The translator read data from RFM, make predefined SDN packet, and send packet to destination in real time. Moreover, the translator receive SDN packet and write data to predefined data address in real time. This translator translate each data in accordance with KSTAR timing system. Therefore, each data synchronize with KSTAR timing system. Moreover, the translator also provide the monitoring functionality of SDN and RFM using EPICS (Experimental Physics and Industrial Control System). This paper presents the algorithm of the translator system and experiment setup. The translator was tested on the MRG-R kernel 3.10. This experiments show a real time performance of the translator.
Co-authors
Bertrand Bauvir
(CODAC, ITER Organization, Route de Vinon sur Verdon 13115 Saint Paul Lez Durance, France)
Hong Jaesic
(Control team, National Fusion Research Institute, DAEJEON, South Korea)
Kwon Giil
(Control team, National Fusion Research Institute, DAEJEON, South Korea)
Lee Taegu
(Control team, National Fusion Research Institute, DAEJEON, South Korea)
Lee Woongryol
(Control team, National Fusion Research Institute, DAEJEON, South Korea)
