Patent ID: 9666408
Date: 2017-05-30
CPC Classifications: H01J,H01L

Claim:
1. A scanning electron microscope comprising: a mini-environment device that includes a conveyance robot for carrying out a sample from a sample container in which the sample is stored, and that pressurizes space which includes the conveyance robot; a load lock chamber that the sample is carried in to by the conveyance robot and that evacuates atmosphere around the sample; a vacuum chamber that the sample is carried in to from the load lock chamber; an electron beam column that irradiates an electron beam to the sample carried in to the vacuum chamber; a sample stage that moves the sample to irradiate the electron beam at desired position of the sample; a temperature control device that controls temperature of the pressurized space in the mini-environment device; and a control unit that controls the temperature control device so that a temperature of the sample inside the mini-environment device rapidly becomes a setting temperature set in view of a lowered temperature of the sample inside the load lock chamber based on a predetermined temperature difference obtained in advance so as to omit standby time.