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Portal trace detection systems for detection of imbedded particles

  • US 20050120776A1
  • Filed: 01/10/2005
  • Published: 06/09/2005
  • Est. Priority Date: 12/22/2000
  • Status: Abandoned Application
First Claim
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1. A portal trace detection system comprising a portal having a plurality of sidewalls and a passage between the sidewalls, a ceiling connecting the sidewalls and disposed above the passage, a particle detection apparatus having an inlet in the ceiling and communicating with the passage for receiving air flowing upwardly in the portal and towards the ceiling, at least the surface of the ceiling facing into the passage comprising an anti-static material for reducing electrostatic accumulation of particles of interest on the ceiling.

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