Patent Number: 
Section: claims

1. A multi-beam x-ray beam system comprising:a point focus x-ray source; anda housing with a first part and a second part, the second part being moveable relative to the first part, the second part including a plurality of 2-dimensional multilayer x-ray optics that condition the beam in two directions that are perpendicular to the axis of the x-ray beam, each optic, through the movement of the second part relative to the first part, being positioned to a working position so that the optic receives the x-rays from the x-ray source and directs the x-rays of different performance characteristics to a desired location. 2. The x-ray beam system of claim 1, wherein the second part includes a coarse alignment mechanism so that each optic is coarsely aligned when the optic is positioned to its working position, the optic being coarsely aligned to a desired source focal spot and with an intended beam direction and beam position. 3. The x-ray beam system of claim 1, wherein each optic is factory pre-aligned so that the optic is coarsely aligned to a desired source focal spot and with an intended beam direction and beam position. 4. The x-ray beam system of claim 1, wherein the first part includes an alignment mechanism to precisely align each optic when the optic is positioned to its working position, the optic being precisely aligned to a desired source focal spot and with an intended beam direction and beam position. 5. The x-ray beam system of claim 1, wherein the second part includes an alignment mechanism to precisely align each optic when the optic is positioned to its working position, the optic being precisely aligned to a desired source focal spot and with an intended beam direction and beam position. 6. The x-ray beam system of claim 1, wherein the optic housing is a rotary housing with an outer shell and an inner shell, the inner shell being the second part and the outer shell being the first part, the plurality of optics in the inner shell being in a circular geometry and being rotatable relative to the outer shell, each optic being positioned to its desired working position by rotating the inner shell relative to the outer shell. 7. The x-ray beam system of claim 1, wherein the optic housing is a housing with an outer shell being the first part, the second part with the plurality of optics having a linear array or a matrix structure and being movable relative to the outer shell, each optic being positioned to its working position by translating the second part relative to the outer shell. 8. The x-ray beam system of claim 1, wherein the x-ray source includes an anode with different target materials and a cathode that delivers an electron beam to the different materials to form different source focal spots that emit different spectrums. 9. The x-ray beam system of claim 8, wherein the cathode is an electron gun with an electro-magnetic deflection mechanism to steer the electron beam to the different target materials. 10. The x-ray beam system of claim 1, wherein the x-ray source includes an anode with different target materials and is repositionable so that the different materials are positioned under an electron beam to generate x-rays with different spectrums. 11. The x-ray beam system of claim 1, wherein the 2-dimensional multilayer x-ray optics are graded d-spacing multilayer optics. 12. The x-ray beam system of claim 11, wherein the graded multilayer optics are any combination of collimating optics and focusing optics with a different combination of performance attributes including divergence, focal length, working energy, and energy bandwidth. 13. The x-ray beam system of claim 11, wherein each of the 2-dimensional multilayer optics is made of two 1-dimensional optics either in a side-by-side geometry or in a sequential Kirkpatrick-Baez geometry. 14. The x-ray beam system of claim 11, wherein the 2-dimensional optics have a parabloidal geometry for collimating the x-ray beams or an ellipsoidal geometry for focusing the x-ray beams.