Patent ID: 8847178

Claim:
A charged particle beam writing apparatus comprising: a substrate cover attachment/detachment mechanism unit configured to attach or detach a substrate cover that covers a whole periphery of a substrate being a writing target from an upper part, to/from the substrate; a writing unit configured to write a pattern on the substrate, in a state where the substrate cover has been attached to the substrate, by using a charged particle beam; a position measurement unit configured, before and after performing writing by the writing unit, to measure a position of the substrate cover in a state attached to the substrate, at a predetermined measurement position; and a correction unit configured, with respect to the position of the substrate cover in a state attached to the substrate, to calculate a positional deviation amount between a measured position of the substrate cover measured after writing and a measured position of the substrate cover measured before writing, and to correct the position of the substrate cover in a state attached to the substrate based on the positional deviation amount calculated.