Patent ID: 8415644

Claim:
A system, comprising: a first particle beam column comprising a focusing lens configured to focus a first particle beam along a first beam path to an interaction region; an object holder configured to arrange an object in the interaction region, the object holder being configured to tilt the object relative to the first particle beam column about a tilt axis transverse to a direction of the first beam path; and a gas supply arrangement comprising a piping and a gas supply line, wherein: a first end of the gas supply line is coupleable to a gas reservoir; a second end of the gas supply line opens into the piping so that the gas supply line is configured to supply gas from the gas reservoir to the piping; the piping extends annularly around the first beam path between the focusing lens and the interaction region; the piping has a plurality of openings on a side facing the interaction region so that gas exiting the openings is oriented towards the interaction region; and the piping comprises a holder configured to pivot the piping about a pivot axis parallel to the tilt axis.