Recent developments in the JT-60 data processing system

The JT-60 data processing system was originally a large computer complex sy stem including a lot of micro-computers, several mini-computers, and a main frame computer. Recently, several improvements have been made to the origin al system to modernize the system. Many sub-systems composed of aged mini-c omputers have been replaced with workstations by utilizing recent progress in computer and network technologies. The system can handle similar to 300 MB of raw data per discharge, which is three times larger than the amount i n the original system. These improvements have been applied to develop elem ent technologies necessary to the remote participation in JT-60 experiments . A remote diagnostics control and monitoring system and a computer system for access to JT-60 data from the Internet are used together with video con ferencing systems for a real-time communication. In 1996, the remote partic ipation based on them was successfully demonstrated in collaboration with J apan Atomic Energy Research Institute, Los Alamos National Laboratory, and Princeton Plasma Physics Laboratory. (C) 1999 Elsevier Science S.A. All rig hts reserved.