摘要:
An x-ray radiator has a housing containing a fluid coolant wherein a rotating bulb x-ray tube is rotatably seated, the rotating bulb x-ray tube having an evacuated vacuum housing containing a cathode and an anode, with the anode forming a wall of the vacuum housing and having an exterior charged by the coolant. The anode has a profiling at its exterior that enlarges the surface area contact between the exterior of the anode and the coolant. The profiling can be in the form of at least one channel proceeding from as a spiral from a central region of the anode toward its periphery.
摘要:
A computed tomography system has a gantry rotating around a patient acceptance space in a stationary gantry housing, the gantry carrying an x-ray radiator connected to a cooling device. The x-ray tube is a directly cooled rotating bulb tube whose coolant serves as an intermediate heat store and which is cooled in standstill periods of the gantry by a likewise co-rotating heat exchanger via a coolant pump.
摘要:
An x-ray radiator has a rotary-bulb tube, whose vacuum enclosure rotates inside a radiator housing, which is filled with a liquid cooling medium, and a cooling medium conducting body is arranged between the vacuum enclosure and the radiator housing, at a distance from both of these. The cooling medium conducting body produces a flow of the cooling medium along the vacuum enclosure in the inner gap and a return flow of the cooling medium along the radiator housing in the outer gap, promoted by the rotation of the rotary-bulb tube.
摘要:
An x-ray radiator has a rotating bulb tube whose vacuum housing rotates within the radiator housing filled with a fluid coolant, as well as with an external heat exchanger for the cooling of the coolant, with the coolant admission connector and the coolant discharge connector for the coolant conducted through the external heat exchanger without a circulating pump arranged at respective positions of the radiator housing at which a lower pressure and a higher pressure are generated by the rotation of the rotating bulb.
摘要:
An x-ray generating system has an x-ray source arranged in a coolant-filled housing, and a phase change store which contains a phase change material disposed in the coolant in the housing.
摘要:
A cooling device for an X-ray source arranged at a gantry rotatable around a rotational axis has a ring-like heat exchanger that is arranged at the gantry and is thermally conductively connected to the X-ray source. The cooling device is useable in a computed tomography apparatus having the X-ray source.
摘要:
A fluorescent X-ray emitting source has an unfocused, omni-directionally radiating electron source and an anode target for the generation of X-ray bremsstrahlung, which releases mono-energetic X-rays in a fluorescent target. The electron source and the fluorescent target are arranged in a vacuum housing with an X-ray exit window. The housing has an interior wall surface forming the anode target and the fluorescent target is aligned with the X-ray exit window.
摘要:
A direct-heated flat emitter for generating a homogenous electron beam, particularly for x-ray tubes, has two terminal lugs for the heating current supply formed at the edge of the perimeter of the emission surface and the emission surface is subdivided into interconnects by slits. The slits have a width no less than 10 .mu.m and no greater than 1% of the length of a diagonal of the smallest rectangle which can circumscribe the emission surface.
摘要:
X-ray tube with flying focus has a magnet system for deflecting and focusing the electron beam, whereby the magnet system including a carrier that is constructed as an iron yoke and that has four pole projections that are arranged around the axis of the electron beam offset from one another by 90°, on which two pairs of coils (z-coils and &phgr;-coils) are arranged so as to be offset from one another 90°. The individual coils of each pair supplied with a common high-frequency alternating current that deflects the electron beam in the &phgr;-and z-directions, respectively, in a pulsed manner.
摘要:
An x-ray computed tomography apparatus with electronic scanning of a ring-shaped anode has a solenoid coil for space-charge compensation which allows access to the anode. The solenoid coil is constructed of multiple parts so that a connector part can be released from a base part and the anode is thereby made accessible.