Advances in Electrostatic Dust Detection on Remote Surfaces Metadata

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Title

  • Main Title Advances in Electrostatic Dust Detection on Remote Surfaces

Creator

  • Author: Voinier, C.
    Creator Type: Personal
  • Author: Skinner, C. H.
    Creator Type: Personal
  • Author: Roquemore, A. L.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Science.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Science (SC)

Publisher

  • Name: Princeton University. Plasma Physics Laboratory.
    Place of Publication: Princeton, New Jersey
    Additional Info: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ

Date

  • Creation: 2005-02-09

Language

  • English

Description

  • Content Description: The inventory of dust in next-step magnetic fusion devices will be regulated for safety reasons, however diagnostics to measure in-vessel dust are still in their infancy. Advances in dust particle detection on remote surfaces are reported. Two grids of interlocking circuit traces with spacing in the range 125 mu m to 25 mu m are biased to 30 V. Impinging dust creates a short circuit and the result current pulse is recorded. The detector response was measured with particles scraped from a carbon fiber composite tile and sorted by size category. The finest 25 mu m grid showed a sensitivity more than an order of magnitude higher than the 125 mu m grid. The response to the finest particle categories (5 –30 mu m) was two orders of magnitude higher than the largest (125 –250 mu m) category. Longer duration current pulses were observed from the coarser particles. The results indicate a detection threshold for fine particles below 1 mu g/cm^2.
  • Physical Description: 824 Kilobytes

Subject

  • Keyword: Dusts
  • Keyword: Electrical Faults
  • Keyword: Electrostatics
  • Keyword: Dust Diagnostics
  • STI Subject Categories: 70 Plasma Physics And Fusion Technology
  • Keyword: Carbon Fibers
  • Keyword: Detection
  • Keyword: Safety
  • Keyword: Next-Step Fusion Devices
  • Keyword: Dust Particles
  • Keyword: Sensitivity Dust Particles

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: PPPL-4049
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/836832
  • Office of Scientific & Technical Information Report Number: 836832
  • Archival Resource Key: ark:/67531/metadc784754