An elevated potential liner can be provided if needed. The MCP Detector is fitted with an input grid. This presents a flat, field free plane to the incoming ions. It can be operated at ground or elevated potential as required. Two microchannel plates are used.
Special configurations are available which use three plates for increased sensitivity.
For use in special applications it can be easily modified to triple MCP, post acceleration and other configurations. Materials of construction are 304 Stainless Steel, Nickel, Aluminum and Alumina. Behind this is the first Repeller Grid, followed by several plates which give a uniform repelling field. More plates are used than are actually required in order to guarantee uniformity and prevent ion scattering and loss of sensitivity. The last element is the Repeller Grid which can run at reflection potential, or grounded to enable the ions to pass through and be detected by the 18mm MCP Linear Mode Detector.