Patent ID: 9355816
Filing Date: 2016-05-31
CPC Classification: H01J

Claim Text:
1. A non-transitory storage medium storing a machine-readable program for correcting an irradiation position of a charged particle beam irradiated on a work piece applied with a resist, the storage medium including instructions configured to cause a controller to perform actions comprising: replacing charging of the resist caused by irradiation of the charged particle beam with surface charges at an interface between the resist and the work piece and calculating a charge density distribution for each mesh of the replaced surface charges; calculating a trajectory of a charged particle from an emission position of the charged particle beam to a surface of the resist based on the charge density distribution; calculating an error amount of the irradiation position of the charged particle beam based on the calculated trajectory; and calculating a correction amount of the irradiation position of the charged particle beam based on the calculated error amount.