Cooling arrangement and lithographic apparatus comprising a resilient wall creating a gap between a detector module housing and a heat sink of the cooling arrangement
First Claim
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1. A cooling arrangement comprising:
- a detector module comprising a detector and a housing partially enclosing the detector, wherein the housing has a first thermal contact surface;
a heat sink having a second thermal contact surface facing the first thermal contact surface; and
a resilient wall configured to create a gap between the first thermal contact surface and the second thermal contact surface, and surrounding the heat sink and a space at least comprising the gap, andwherein the cooling arrangement is configured to maintain a pressure difference between said space and an environment of the cooling arrangement and to transport heat from the first thermal contact surface to the second thermal contact surface to thereby cool the detector module.
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Abstract
A cooling arrangement is described and includes a heat sink having a first thermal contact surface, an object having a second thermal contact surface and a resilient wall. The first thermal contact surface and the second thermal contact surface face each other and define a gap. The resilient wall is part of an enclosure that surrounds a space at least comprising the gap, and the cooling arrangement includes a facility to maintain a pressure difference between the space and an environment of the cooling arrangement. Additionally, a lithographic apparatus comprising such a cooling arrangement is described.
21 Citations
17 Claims
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1. A cooling arrangement comprising:
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a detector module comprising a detector and a housing partially enclosing the detector, wherein the housing has a first thermal contact surface; a heat sink having a second thermal contact surface facing the first thermal contact surface; and a resilient wall configured to create a gap between the first thermal contact surface and the second thermal contact surface, and surrounding the heat sink and a space at least comprising the gap, and wherein the cooling arrangement is configured to maintain a pressure difference between said space and an environment of the cooling arrangement and to transport heat from the first thermal contact surface to the second thermal contact surface to thereby cool the detector module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lithographic apparatus comprising:
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an imaging system configured to direct electromagnetic radiation at an object plane so as to illuminate the object plane; a first grating positioned in the object plane; a projection optical system configured to project an image of the first grating onto a focal plane; and a cooling arrangement comprising; a detector module comprising a detector and a housing partially enclosing the detector, wherein the housing has a first thermal contact surface; a heat sink haying a second thermal contact surface facing the first thermal contact surface; and a resilient wall configured to create gap between the first thermal contact surface and the second thermal contact surface, and surrounding the heat sink and a space at least comprising the gap, wherein the cooling arrangement is configured to maintain a pressure difference between said space and an environment of the cooling arrangement and to transport heat from the first thermal contact surface to the second thermal contact surface to thereby cool the detector module, and wherein the detector module is configured to receive the image projected by the projection optical system.
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16. A method of cooling a detector module, the detector module comprising a detector and a housing partially enclosing the detector, wherein the housing has a first thermal contact surface, the method comprising:
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mounting the detector module to a cooling device comprising; a heat sink having a second thermal contact surface facing the first thermal contact surface; and a resilient wall configured to create a gap between the first thermal contact surface and the second thermal contact surface, and surrounding the heat sink and a space at least comprising the gap; maintaining a pressure difference between the space and an environment of the cooling arrangement; and transport heat from the first thermal contact surface to the second thermal contact surface to thereby cool the detector module.
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17. A method of measuring a wavefront, the method comprising;
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directing electromagnetic radiation to an object plane so as to illuminate the object plane; projecting an image of a first grating positioned in the object plane onto a focal plane at a detector module, the detector module comprising a detector and a housing partially enclosing the detector, wherein the housing has a first thermal contact surface; and arranging the first thermal contact surface proximate to and facing a second thermal contact surface of a heat sink such that a gap is formed between the first thermal contact surface and the second thermal contact surface; arranging a resilient wall to surround the heat sink and a space at least comprising the gap; maintaining a pressure difference between the space and an environment external to the resilient wall; and measuring the wavefront at the focal plane; wherein heat from the first thermal contact surface is transported to the second thermal contact surface to cool the detector module.
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Specification