Patent ID: 11961627
Assignee: ASML NETHERLANDS B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A charged particle beam generator, comprising:
a beam source for generating a charged particle beam along an optical axis; and
a collimator electrode stack comprising:
a plurality of stacked collimator electrodes for collimating the charged particle beam along the optical axis, wherein each collimator electrode of the plurality of stacked collimator electrodes comprises an electrode body with an electrode aperture for permitting passage of the charged particle beam, wherein the electrode bodies are mutually spaced along an axial direction that is substantially parallel with the optical axis, and wherein the electrode apertures are coaxially aligned along the optical axis; and
a stack support system for supporting the collimator electrode stack with respect to an external reference frame, and connected to a lateral region of the collimator electrode stack,

wherein a first collimator electrode of the collimator electrodes is provided at an upstream end of the collimator electrode stack, wherein the beam source is provided upstream of the first collimator electrode, and wherein the beam source and the electrode apertures of the collimator electrodes are coaxially aligned along the optical axis.