Be Foil "Filter Knee Imaging" NSTX Plasma with Fast Soft X-ray Camera

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A fast soft x-ray (SXR) pinhole camera has been implemented on the National Spherical Torus Experiment (NSTX). This paper presents observations and describes the Be foil Filter Knee Imaging (FKI) technique for reconstructions of a m/n=1/1 mode on NSTX. The SXR camera has a wide-angle (28{sup o}) field of view of the plasma. The camera images nearly the entire diameter of the plasma and a comparable region in the vertical direction. SXR photons pass through a beryllium foil and are imaged by a pinhole onto a P47 scintillator deposited on a fiber optic faceplate. An electrostatic image intensifier demagnifies the ... continued below

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Stratton, B.C.; Goeler, S. von; Stutman, D.; Tritz, K. & Zakharov, L.E. August 8, 2005.

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Description

A fast soft x-ray (SXR) pinhole camera has been implemented on the National Spherical Torus Experiment (NSTX). This paper presents observations and describes the Be foil Filter Knee Imaging (FKI) technique for reconstructions of a m/n=1/1 mode on NSTX. The SXR camera has a wide-angle (28{sup o}) field of view of the plasma. The camera images nearly the entire diameter of the plasma and a comparable region in the vertical direction. SXR photons pass through a beryllium foil and are imaged by a pinhole onto a P47 scintillator deposited on a fiber optic faceplate. An electrostatic image intensifier demagnifies the visible image by 6:1 to match it to the size of the charge-coupled device (CCD) chip. A pair of lenses couples the image to the CCD chip.

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1.6 MB

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  • Report No.: PPPL-4093
  • Grant Number: AC20-76CH0373
  • DOI: 10.2172/842399 | External Link
  • Office of Scientific & Technical Information Report Number: 842399
  • Archival Resource Key: ark:/67531/metadc787474

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  • August 8, 2005

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 3, 2016, 8:23 p.m.

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Stratton, B.C.; Goeler, S. von; Stutman, D.; Tritz, K. & Zakharov, L.E. Be Foil "Filter Knee Imaging" NSTX Plasma with Fast Soft X-ray Camera, report, August 8, 2005; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc787474/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.