Thin walled tube radiator for bremsstrahlung at high electron beam intensities
AssigneePassport Systems, Inc.
InventorsWilliam Bertozzi, Michael Donovan, Alexei Klimenko, Stephen E. Korbly, William Park
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Abstract
Methods and systems for generating bremsstrahlung with enhanced photon flux in a narrow cone at forward angles utilize a thin target of a high-Z material such as gold as radiator, supported on a tube of a low-Z material such as titanium, which tube contains a circulating fluid such as water which acts as a coolant and also may absorb the incident electron beam.
Claims49
A system for generating a bremsstrahlung beam containing photons of energy of at least 1 MeV for illuminating a downstream target, comprising:
- a) an electron source,
- b) a radiator layer,
- c) one supporting tube, and
- d) a fluid,
- wherein the radiator layer is disposed directly on an exterior wall of the one supporting tube,
- wherein the radiator layer and the one supporting tube are positioned such that an entire cross-section of an electron beam from the electron source is incident successively upon the radiator layer and the exterior wall of the one supporting tube, and
- wherein the radiator layer comprises a material with Z>70,
- wherein the supporting tube comprises a material with Z<31,
- wherein the fluid circulates in the supporting tube,
- wherein the electron source provides an electron beam comprising electrons of energy of at least 1 MeV,
- wherein a tube interior radius is larger than a thickness of the one supporting tube exterior wall at all points on the exterior wall;
- and
- wherein a tube interior diameter is larger than a width of the radiator layer.
A system for generating a bremsstrahlung beam containing photons of energy of at least 1 MeV. for illuminating a downstream target, comprising:
- a) an electron source,
- b) one tube, and
- c) a fluid,
- wherein the one tube is positioned such that an entire cross-section of an electron beam from the electron source is incident directly upon an exterior wall of the one tube,
- wherein the tube comprises a material with Z<31,
- wherein the fluid circulates in the tube;
- wherein the electron source provides an electron beam comprising electrons of energy of at least 1 MeV, and
- wherein a tube interior radius is larger than a thickness of the one tube exterior wall at all points on the exterior wall.
Dependencies are inferred from the claim text.