Large Aperture Electrostatic Dust Detector

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Diagnosis and management of dust inventories generated in next-step magnetic fusion devices is necessary for their safe operation. A novel electrostatic dust detector, based on a fine grid of interlocking circuit traces biased to 30 or 50 ν has been developed for the detection of dust particles on remote surfaces in air and vacuum environments. Impinging dust particles create a temporary short circuit and the resulting current pulse is recorded by counting electronics. Up to 90% of the particles are ejected from the grid or vaporized suggesting the device may be useful for controlling dust inventories. We report measurements of ... continued below

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Skinner, C. H.; Hensley, R. & Roquemore, A. L. October 9, 2007.

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Diagnosis and management of dust inventories generated in next-step magnetic fusion devices is necessary for their safe operation. A novel electrostatic dust detector, based on a fine grid of interlocking circuit traces biased to 30 or 50 ν has been developed for the detection of dust particles on remote surfaces in air and vacuum environments. Impinging dust particles create a temporary short circuit and the resulting current pulse is recorded by counting electronics. Up to 90% of the particles are ejected from the grid or vaporized suggesting the device may be useful for controlling dust inventories. We report measurements of the sensitivity of a large area (5x5 cm) detector to microgram quantities of dust particles and review its applications to contemporary tokamaks and ITER.

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  • Thirty-Fourth EPS Conference on Plasma Physics, 2–6 July 2007, Warsaw, Poland.

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  • Report No.: PPPL-4266
  • Grant Number: DE-ACO2-76CHO3073
  • Office of Scientific & Technical Information Report Number: 961740
  • Archival Resource Key: ark:/67531/metadc927752

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • October 9, 2007

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 13, 2016, 2:31 p.m.

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Skinner, C. H.; Hensley, R. & Roquemore, A. L. Large Aperture Electrostatic Dust Detector, article, October 9, 2007; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc927752/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.