Patent ID: 7629593

Claim:
A lithographic apparatus comprising: a radiation system constructed to provide a beam of radiation from radiation emitted by a radiation source, the radiation system comprising a contaminant trap configured to trap material emanating from the radiation source, the contaminant trap comprising a static part and a rotating part, the rotating part comprising a contaminant engaging surface arranged in the path of the radiation beam that receives the material emanating from the radiation source during propagation of the radiation beam in the radiation system, and a liquid tin cooling system constructed to cool the contaminant trap with liquid tin; an illumination system configured to condition the radiation beam; a support constructed to support a patterning device, the patterning device being configured to impart the radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; and a projection system configured to project the patterned radiation beam onto a target portion of the substrate.