Improved Metal Grid Fabrication Technique
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
A technique is described whereby the fabrication of wire mesh metal grids, as used in applications which apply an electric field for the purpose of manipulating charged particles, is improved so as to eliminate grid distortions which can occur due to high operating temperatures. Metal grids are used in applications such as: a) extraction grids, as used in Kaufman-type ion beam sources, b) retarding grid analyzers, as used in neutrino detection and measurement, and c) Faraday grids, as used in electron microscopes. They are generally fabricated from woven metal mesh, spot welded to a support substrate or are made from semiconductor materials using microelectronic processing techniques. The spot-welded grids present problems of short operational life due to inadequate fastening.