Rogowski Loop design for NSTX

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Description

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 ... continued below

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55 Kilobytes pages

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McCormack, B.; Kaita, R.; Kugel, H. & Hatcher, R. January 6, 2000.

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Description

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.

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55 Kilobytes pages

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INIS; OSTI as DE00750155

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  • Other Information: PBD: 6 Jan 2000

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  • Report No.: PPPL--3415
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/750155 | External Link
  • Office of Scientific & Technical Information Report Number: 750155
  • Archival Resource Key: ark:/67531/metadc706913

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  • January 6, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 15, 2016, 7:37 p.m.

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McCormack, B.; Kaita, R.; Kugel, H. & Hatcher, R. Rogowski Loop design for NSTX, report, January 6, 2000; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc706913/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.