Mechanical Design of the NSTX High-k Scattering Diagnostic

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The NSTX High-k Scattering Diagnostic measures small-scale density fluctuations by the heterodyne detection of waves scattered from a millimeter wave probe beam at 280 GHz and {lambda}=1.07 mm. To enable this measurement, major alterations were made to the NSTX vacuum vessel and Neutral Beam armor. Close collaboration between the PPPL physics and engineering staff resulted in a flexible system with steerable launch and detection optics that can position the scattering volume either near the magnetic axis ({rho} {approx} .1) or near the edge ({rho} {approx} .8). 150 feet of carefully aligned corrugated waveguide was installed for injection of the probe ... continued below

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680 Kb

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Feder R, Mazzucato E, Munsat T, Park H, Smith DR, Ellis R, Labik G, Priniski C September 26, 2005.

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The NSTX High-k Scattering Diagnostic measures small-scale density fluctuations by the heterodyne detection of waves scattered from a millimeter wave probe beam at 280 GHz and {lambda}=1.07 mm. To enable this measurement, major alterations were made to the NSTX vacuum vessel and Neutral Beam armor. Close collaboration between the PPPL physics and engineering staff resulted in a flexible system with steerable launch and detection optics that can position the scattering volume either near the magnetic axis ({rho} {approx} .1) or near the edge ({rho} {approx} .8). 150 feet of carefully aligned corrugated waveguide was installed for injection of the probe beam and collection of the scattered signal in to the detection electronics.

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680 Kb

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  • Related Information: Presented at: the Twenty-First Symposium on Fusion Engineering (SOFE2005), 26 - 29 September 2005, Knoxville, Tennessee USA.

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  • Report No.: PPPL-4106
  • Grant Number: DE-AC02-76CH03073
  • Office of Scientific & Technical Information Report Number: 899516
  • Archival Resource Key: ark:/67531/metadc891355

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  • September 26, 2005

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 18, 2016, 10:01 p.m.

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Feder R, Mazzucato E, Munsat T, Park H, Smith DR, Ellis R, Labik G, Priniski C. Mechanical Design of the NSTX High-k Scattering Diagnostic, report, September 26, 2005; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc891355/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.