Patent ID: 11929238
Assignee: JEOL LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 0:
1. An ion beam processing apparatus, comprising:
an ion beam generator that includes an ionization chamber and generates an ion beam for processing a sample;
a housing having a sample chamber communicating with the ionization chamber;
a gas supply system that supplies a raw material gas to the ionization chamber;
a turbo molecular pump that suctions the sample chamber and creates vacuum in the sample chamber and the ionization chamber; and
a controller that controls the gas supply system by supplying a brake gas which is identical to or different from the raw material gas into the ionization chamber during deceleration of the turbo molecular pump, to thereby supply the brake gas into the turbo molecular pump from the ionization chamber through the sample chamber.