this post was submitted on 21 May 2024
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[–] abhibeckert@lemmy.world 17 points 6 months ago* (last edited 6 months ago) (1 children)

AFAIK the optics have to be regularly cleaned, calibrated and replaced. And by regularly, I mean daily/weekly for some of that.

The process is a carefully guarded trade secret and intentionally difficult. The companies that own the machines are not allowed to have employees who are trained in the process. When you buy those machines it comes with a service contract from the manufacturer. And the manufacturer is ASML - a Dutch company.