Patent Number: 
Section: claims

1. A lithographic projection apparatus comprising: a radiation system which provides a projection beam of radiation;  projection beam patterning structure which patterns the projection beam according to a desired pattern;  a substrate table for holding a substrate;  a projection system which images the patterned beam onto a target portion of the substrate; wherein  at least one voice coil motor operatively associated with at least one of the projection beam patterning structure and the substrate table to position the same, said at least one voice coil motor having a coil in thermal contact with a cooling jacket; and  the cooling jacket comprises at least one channel for circulation of a cooling fluid, the at least one channel being arranged such as to be substantially located in a portion of the cooling jacket adjacent to the coil. 2. Apparatus according to  claim 1  wherein the cooling jacket comprises a substantially planar body. claim 1 3. Apparatus according to  claim 1  wherein the cooling jacket comprises a plurality of said channels which are configured such that the channels are evenly distributed in the said portion of the cooling jacket adjacent to the coil. claim 1 4. Apparatus according to  claim 3  wherein the channels are substantially straight. claim 3 5. Apparatus according to  claim 3  wherein the channels are serpentine. claim 3 6. Apparatus according to  claim 1  wherein the coil is comprised of a plurality of wire turnings, all of which are in substantially the same plane, and the cooling jacket is substantially parallel to the plane of the turnings and attached to at least one of the upper and lower surfaces of the coil. claim 1 7. Apparatus according to  claim 1  wherein at least one of said channels is parallel to the plane of the portion of the cooling jacket within which it is located. claim 1 8. Apparatus according to  claim 1  wherein the voice coil motor comprises alternating sections of coil and cooling jacket. claim 1 9. Apparatus according to  claim 1  wherein the cooling fluid is water. claim 1 10. Apparatus according to  claim 1  wherein the cooling jacket is made from an electrically non-conducting material. claim 1 11. Apparatus according to  claim 10  wherein the cooling jacket is made from a ceramic. claim 10 12. Apparatus according to  claim 11  wherein the ceramic is selected from the group comprising Al 2 O 3  and AlN. claim 11 13. Apparatus according to  claim 11  wherein at least one part of the cooling jacket having at least a portion of the channel located therein, is formed as a single monolithic component. claim 11 14. Apparatus according to  claim 11 , wherein at least one part of the cooling jacket, having at least a portion of the channel located therein, is formed from two components which are bonded together to form said one part, at least one of the contacting surfaces of the component comprising at least one groove which forms the channel in the bonded state. claim 11 15. Apparatus according to  claim 11  wherein at least one part of the cooling jacket, having at least a portion of the channel located therein, is formed from three components that are bonded together, an intermediate component of said three components being formed with sections of material removed, said sections forming the channels in the bonded state. claim 11 16. Apparatus according to  claim 14  wherein the components are joined by glass bonding. claim 14 17. Apparatus according to  claim 14  wherein each of the components is formed from an unsintered material before bonding together, the components being bonded by pressing them together followed by sintering, so as to form a single monolithic component in a finished state. claim 14 18. A device manufacturing method comprising: providing a substrate that is at least partially covered by a layer of radiation-sensitive material;  providing a projection beam of radiation using a radiation system;  patterning the projection beam to produce a pattern in its cross-section;  projecting the patterned beam of radiation onto a target portion of the layer of radiation-sensitive material;  positioning at least one of a substrate table supporting said substrate and a patterning structure used for said patterning by using at least one voice coil motor having a coil in thermal contact with a cooling jacket; and  passing a cooling fluid through the cooling jacket so as to substantially pass the cooling fluid through a portion of the cooling jacket adjacent to the coil. 19. A device manufactured according to the method of  claim 18 . claim 18