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Title: NSTX High Temperature Sensor Systems

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
14463
Report Number(s):
PPPL-3380
AC02-CHO-3073; TRN: US0111043
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Nov 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; NSTX DEVICE; DESIGN; FIRST WALL; GRAPHITE; LANGMUIR PROBE; ROGOWSKI COIL; THERMOCOUPLES; DIAGNOSTIC TECHNIQUES; REACTOR INSTRUMENTATION; INSTALLATION

Citation Formats

B.McCormack, H.W. Kugel, P. Goranson, R. Kaita, and et al. NSTX High Temperature Sensor Systems. United States: N. p., 1999. Web. doi:10.2172/14463.
B.McCormack, H.W. Kugel, P. Goranson, R. Kaita, & et al. NSTX High Temperature Sensor Systems. United States. doi:10.2172/14463.
B.McCormack, H.W. Kugel, P. Goranson, R. Kaita, and et al. Mon . "NSTX High Temperature Sensor Systems". United States. doi:10.2172/14463. https://www.osti.gov/servlets/purl/14463.
@article{osti_14463,
title = {NSTX High Temperature Sensor Systems},
author = {B.McCormack and H.W. Kugel and P. Goranson and R. Kaita and et al},
abstractNote = {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.},
doi = {10.2172/14463},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 1999},
month = {Mon Nov 01 00:00:00 EST 1999}
}

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