NSTX High Temperature Sensor Systems

Technical Report · Mon Nov 01 04:00:00 EST 1999

DOI:https://doi.org/10.2172/14463· OSTI ID:14463

McCormack, B ^[1]; Kugel, H W; Goranson, P; Kaita, R

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1. Princeton Plasma Physics Laboratory

The design of the more than 300 in-vessel sensor systems for the National Spherical Torus Experiment (NSTX) has encountered several challenging fusion reactor diagnostic issues involving high temperatures and space constraints. This has resulted in unique miniature, high temperature in-vessel sensor systems mounted in small spaces behind plasma facing armor tiles, and they are prototypical of possible high power reactor first-wall applications. In the Center Stack, Divertor, Passive Plate, and vessel wall regions, the small magnetic sensors, large magnetic sensors, flux loops, Rogowski Coils, thermocouples, and Langmuir Probes are qualified for 600 degrees C operation. This rating will accommodate both peak rear-face graphite tile temperatures during operations and the 350 degrees C bake-out conditions. Similar sensor systems including flux loops, on other vacuum vessel regions are qualified for 350 degrees C operation. Cabling from the sensors embedded in the graphite tiles follows narrow routes to exit the vessel. The detailed sensor design and installation methods of these diagnostic systems developed for high-powered ST operation are discussed.

• Research Organization: Princeton Plasma Physics Lab., NJ (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 14463
• Report Number(s): PPPL-3380; AC02-CHO-3073
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DESIGN
DIAGNOSTIC TECHNIQUES
FIRST WALL
GRAPHITE
INSTALLATION
LANGMUIR PROBE
NSTX DEVICE
REACTOR INSTRUMENTATION
ROGOWSKI COIL
THERMOCOUPLES