Systems And Methods For Detecting Beam Displacement

Detectors, systems, and methods for detecting lateral beam displacement for a beam microscopy system are described herein. In one aspect, a detector can include an aperture for allowing a charged particle beam passing through the detector and irradiating a sample; and a plurality of rails arranged in a first plane extending radially outward from the aperture, wherein each of the plurality of rails is configured to detect charged particles from the charged particle beam before irradiating the sample.