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Title: Rogowski Loop design for NSTX

Abstract

The Rogowski Loop is one of the most basic diagnostics for tokamak operations. On the National Spherical Torus Experiment (NSTX), the plasma current Rogowski Loop had the constraints of the very limited space available on the center stack, 5,000 volt isolation, flexibility requirements as it remained a part of the Center Stack assembly after the first phase of operation, and a +120 C temperature requirement. For the second phase of operation, four Halo Current Rogowski Loops under the Center Stack tiles will be installed having +600 C and limited space requirements. Also as part of the second operational phase, up to ten Rogowski Loops will installed to measure eddy currents in the Passive Plate support structures with +350 C, restricted space, and flexibility requirements. This presentation will provide the details of the material selection, fabrication techniques, testing, and installation results of the Rogowski Loops that were fabricated for the high temperature operational and bakeout requirements, high voltage isolation requirements, and the space and flexibility requirements imposed upon the Rogowski Loops. In the future operational phases of NSTX, additional Rogowski Loops could be anticipated that will measure toroidal plasma currents in the vacuum vessel and in the Passive Plate assemblies.

Authors:
; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
750155
Report Number(s):
PPPL-3415
TRN: US0000737
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 6 Jan 2000
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; NSTX DEVICE; PLASMA DIAGNOSTICS; SPECIFICATIONS; MEASURING INSTRUMENTS; ROGOWSKI COIL; ELECTRIC CURRENTS; PERFORMANCE TESTING; INSTALLATION; FABRICATION

Citation Formats

McCormack, B., Kaita, R., Kugel, H., and Hatcher, R. Rogowski Loop design for NSTX. United States: N. p., 2000. Web. doi:10.2172/750155.
McCormack, B., Kaita, R., Kugel, H., & Hatcher, R. Rogowski Loop design for NSTX. United States. doi:10.2172/750155.
McCormack, B., Kaita, R., Kugel, H., and Hatcher, R. Thu . "Rogowski Loop design for NSTX". United States. doi:10.2172/750155. https://www.osti.gov/servlets/purl/750155.
@article{osti_750155,
title = {Rogowski Loop design for NSTX},
author = {McCormack, B. and Kaita, R. and Kugel, H. and Hatcher, R.},
abstractNote = {The Rogowski Loop is one of the most basic diagnostics for tokamak operations. On the National Spherical Torus Experiment (NSTX), the plasma current Rogowski Loop had the constraints of the very limited space available on the center stack, 5,000 volt isolation, flexibility requirements as it remained a part of the Center Stack assembly after the first phase of operation, and a +120 C temperature requirement. For the second phase of operation, four Halo Current Rogowski Loops under the Center Stack tiles will be installed having +600 C and limited space requirements. Also as part of the second operational phase, up to ten Rogowski Loops will installed to measure eddy currents in the Passive Plate support structures with +350 C, restricted space, and flexibility requirements. This presentation will provide the details of the material selection, fabrication techniques, testing, and installation results of the Rogowski Loops that were fabricated for the high temperature operational and bakeout requirements, high voltage isolation requirements, and the space and flexibility requirements imposed upon the Rogowski Loops. In the future operational phases of NSTX, additional Rogowski Loops could be anticipated that will measure toroidal plasma currents in the vacuum vessel and in the Passive Plate assemblies.},
doi = {10.2172/750155},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 06 00:00:00 EST 2000},
month = {Thu Jan 06 00:00:00 EST 2000}
}

Technical Report:

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