Patent ID: 11860553
Assignee: ASML NETHERLANDS B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. An assembly comprising:
a cryostat and a coil layer of superconducting coils,
wherein the coil layer is configured for use in or with a magnetic levitation and/or acceleration motor system of a lithographic apparatus, is flat and defines two opposing layer faces;
wherein the cryostat comprises two insulation coverings;
wherein the coil layer is arranged between the two insulation coverings and each of the two opposing layer faces is covered by one of the insulation coverings;
wherein each of the insulation covering comprises:
an inner plate and an outer plate parallel to the inner plate, the inner plate being arranged between the outer plate and the coil layer, and
an insulation system arranged between the inner plate and the outer plate;, wherein the insulation system is configured to have a vacuum layer;
wherein the inner plates are configured to be cryocooled; and
wherein the insulation system of one or both of the insulation coverings comprises, in the vacuum layer, one of:
one or more layers of spherical bodies are spheres or half-spheres, and at least one of the layers of spherical bodies providing a layer of point contacts between the layer of spheres and the inner and/or the outer plate, or
at least one set of two layers of straight cylindrical bodies comprising cylinders and/or half-cylinders;

wherein the cylindrical bodies of a first of the two layers are arranged parallel to each other with a spacing between adjacent cylindrical bodies and the cylindrical bodies of a second of the two layers are arranged parallel to each other with a spacing between adjacent cylindrical bodies; and
wherein the first layer and second layer are stacked directly onto each other with the cylindrical bodies of the first layer crosswise with respect to the cylindrical bodies of the second layer to provide, between the cylindrical bodies of the first layer and the cylindrical bodies of the second layer, a layer of point contacts.