Title :
The fast pressure monitoring system on JT-60
Author :
Ogiwara, N. ; Maeno, M. ; Matsukawa, N.
Author_Institution :
Naka Fusion Res. Establ., JAERI, Ibaraki, Japan
Abstract :
Fast pressure gauges were installed in the JT-60 (JAERI Tokamak-60) to monitor the pressure near a plasma. They are Penning configuration gauges. A Penning discharge in the cell is sustained by the magnetic field which confines the plasma. The gauges are controlled by a personal computer. The response time of the system is fast (⩽10 ms), and the structure is so simple that the gauges are reliable even in severe conditions in the JT-60. The system has been successfully used for over a year without requiring maintenance. The details of this fast pressure-monitoring system are described
Keywords :
Tokamak devices; fusion reactor instrumentation; plasma confinement; JT-60; Penning configuration gauges; Penning discharge; fast pressure monitoring system; magnetic field; personal computer; plasma confinement; response time; Computerized monitoring; Delay; Ionization; Magnetic field measurement; Microcomputers; Plasma confinement; Plasma measurements; Power supplies; Pressure measurement; Toroidal magnetic fields;
Conference_Titel :
Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on
Conference_Location :
Knoxville, TN
DOI :
10.1109/FUSION.1989.102315
