Patent ID: 7868300
Filing Date: 2011-01-11
Classification: B82Y,H01J

Abstract:
1. A method of measuring properties of a massive amount of charged particle beams of a charged particle beam system in which the charged particle beams are simultaneously converted into light beams by using a converter element, using an array of light sensitive detectors such as diodes, CCD or CMOS devices, located in line with said converter element, for detecting said light beams, electronically reading out resulting signals for each beam individually from said detectors after exposure thereof by said light beams, utilizing said individual signals for determining values for one or more beam properties, thereby using an automated electronic calculator, and electronically adapting the charged particle system so as to correct for out of specification range values for all or a number of said charged particle beams individually, for one or more properties, based on said calculated property values, wherein determination of beam position and/or beam spot size is performed on the basis of signals resulting from a converted charged particle beam ( while shifting the blocking element and the charged particle beam relative to each another by one or more known shifts, wherein the charged particle blocking element (