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Title: Large Aperture Electrostatic Dust Detector

Abstract

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.

Authors:
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
961740
Report Number(s):
PPPL-4266
TRN: US0903488
DOE Contract Number:  
DE-ACO2-76CHO3073
Resource Type:
Conference
Resource Relation:
Conference: Thirty-Fourth EPS Conference on Plasma Physics, 2–6 July 2007, Warsaw, Poland.
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APERTURES; DETECTION; DIAGNOSIS; DUSTS; ELECTRICAL FAULTS; ELECTROSTATICS; INVENTORIES; MANAGEMENT; PHYSICS; PLASMA; SENSITIVITY; Dust Diagnostics; Dust Particles; Tokamaks, NSTX

Citation Formats

C.H. Skinner, R. Hensley, and A.L Roquemore. Large Aperture Electrostatic Dust Detector. United States: N. p., 2007. Web.
C.H. Skinner, R. Hensley, and A.L Roquemore. Large Aperture Electrostatic Dust Detector. United States.
C.H. Skinner, R. Hensley, and A.L Roquemore. Tue . "Large Aperture Electrostatic Dust Detector". United States. doi:. https://www.osti.gov/servlets/purl/961740.
@article{osti_961740,
title = {Large Aperture Electrostatic Dust Detector},
author = {C.H. Skinner, R. Hensley, and A.L Roquemore},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 09 00:00:00 EDT 2007},
month = {Tue Oct 09 00:00:00 EDT 2007}
}

Conference:
Other availability
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