Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1568615 | Journal of Nuclear Materials | 2008 | 4 Pages |
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 50Â V 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 (5Â ÃÂ 5Â cm) detector to microgram quantities of dust particles.
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Authors
C.H. Skinner, R. Hensley, A.L. Roquemore,