Patent ID: 9406483
Filing Date: 2016-08-02
CPC Classification: B22F,B23K,B28B,B29C,B33Y,G01T,H01J,Y02P

Claim Text:
1. A method for verifying an electron beam, said method comprising the steps of: arranging a patterned aperture resolver having at least one opening in front of at least one X-ray detector, where said at least one opening is facing towards said at least one X-ray detector; arranging a patterned aperture modulator between said patterned aperture resolver and a substrate and at a predetermined distance from said patterned aperture resolver and said substrate, said patterned aperture modulator having a plurality of openings in at least a first direction; scanning an electron beam in at least said first direction on said substrate for generating X-rays to be received by said at least one X-ray detector; and verifying at least one of a position, size and shape of said electron beam by comparing a detected intensity modulation of said X-ray signal by said detector with corresponding reference values, wherein said electron beam is said to be verified if a deviation of said detected intensity modulation and said reference value is smaller than a predetermined value.