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U.S. Department of Energy
Office of Scientific and Technical Information

DIII-D cryogenic control system upgrade

Conference ·
The helium liquefier and distribution system at the DIII-D tokamak facility has been upgraded with the addition of a programmable logic controller, color graphic operator interfaces and analog data acquisition system. This new system provides extended monitoring, control capability as well as centralized datalogging, trending and alarm reporting. Other objectives included offsite (remote) monitoring and control via phone modem and a hardware basis for automation of liquefier operation and maintenance. It is now also possible to accomplish connection and coordination with other DIII-D control systems. It was required that most of the installation and checkout of the new control system be done during operating periods. For this reason, and reliability concerns, the upgrade hardware was designed and installed as an additional independent system rather than a replacement control system. 5 figs.
Research Organization:
General Atomics, San Diego, CA (USA)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC03-89ER51114
OSTI ID:
5453867
Report Number(s):
GA-A-19747; CONF-891007--92; ON: DE90003290
Country of Publication:
United States
Language:
English