Metal window ion chambers and radiation apparatuses including the same
AssigneeVarian Medical Systems, Inc.
InventorsAlex PLANT, Flavio POEHLMANN-MARTINS, Ali CHEROM KHEIRABADI
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Abstract
An ion chamber comprises a first ion chamber window assembly and an ion chamber housing having a first opening. The first ion chamber window assembly includes a first ion chamber window and a first metal plating arranged at a peripheral edge of the first ion chamber window, wherein the first ion chamber window is formed of at least a first metal and has a first surface exposed through the first opening. The first metal plating is formed of a second metal. The first metal is different from the second metal, and the first ion chamber window assembly is fixed, via the first metal plating, on an inner side of the ion chamber housing at a periphery of the first opening.
Claims20
An ion chamber, comprising:
- an ion chamber housing having a first opening;
- and
- a first ion chamber window assembly including a first ion chamber window and a first metal plating arranged at a peripheral edge of the first ion chamber window, the first ion chamber window being formed of at least a first metal and having a first surface exposed through the first opening, and the first metal plating being formed of a second metal, wherein
- the first metal is different from the second metal, and
- the first ion chamber window assembly is fixed, via the first metal plating, on an inner side of the ion chamber housing at a periphery of the first opening.
A radiation apparatus comprising:
- a radiation source configured to emit a radiation beam toward a patient;
- a radiation beam adjustment structure configured to adjust one or more characteristics of the radiation beam;
- and
- an ion chamber arranged in a path of the radiation beam, the ion chamber configured to monitor one or more characteristics of the radiation beam, and the ion chamber including
- an ion chamber housing having a first opening,
- a first ion chamber window assembly including a first ion chamber window and
- a first metal plating arranged at a peripheral edge of the first ion chamber window, the first ion chamber window being formed of at least a first metal and having a first surface exposed through the first opening, and the first metal plating being formed of a second metal, wherein
- the first metal is different from the second metal, and
- the first ion chamber window assembly is fixed, via the first metal plating, on an inner side of the ion chamber housing at a periphery of the first opening.
Dependencies are inferred from the claim text.