Abstract:
An electron emitter including: a plurality of elongate rungs connected together end to end from a first emitter end to a second emitter end in a plane so as to form a planar pattern; a plurality of comers, wherein each elongate rung is connected to another elongate rung through a comer having a comer apex and an opposite corner nadir; a first gap between adjacent non-connected elongate rungs, wherein the.first gap extends from the first emitter end to a middle rung; a second gap between adjacent non-connected elongate rungs, wherein the second gap extends from the second emitter end to the middle rung, wherein the first gap does not intersect the second gap; and one or more cutouts at one or more of the comers of the plurality of comers between the comer apex and comer nadir or at the comer nadir.
Abstract:
본 발명은 두 가지 이상의 특성엑스선을 동시에 발생시키거나 특정한 특성엑스선을 선택적으로 또는 두 가지 이상의 특정한 특성엑스선을 각각 연속해서 발생시킴으로써 용도에 적합한 다양한 특성엑스선을 발생시킬 수 있고, 전자빔과 다중 타겟의 충돌에 의해 회전 양극에서 발생하는 열의 방열효율을 높여 고휘도의 특성엑스선을 장시간 발생시킬 수 있는 다중타겟 및 다중전자빔을 구비한 엑스선 발생장치를 제공함에 있다. 이를 구현하기 위한 본 발명은, 음극 필라멘트(230)로부터 방출된 전자빔이 양극의 다중 타겟(330)에 충돌 및 반사되어 엑스선을 방출하도록 내부에 진공실(120)을 구비하는 케이스(100); 상기 케이스(100)의 내부 일측에 구비되며, 인가되는 전압에 의해 가열되어 전자빔을 방출하는 복수의 필라멘트(230a,230b,230c)로 구성된 다중 음극 필라멘트(230)를 구비하는 음극부(200); 상기 복수의 필라멘트(230a,230b,230c)에 각각 대응하도록 회전 양극 원통부(310)의 외주면 둘레에 축방향으로 이격되어 복수로 구비되며, 서로 다른 원소로 이루어진 타겟(330a,330b,330c)으로 구성된 다중 타겟(330)을 구비하는 양극부(300); 및 상기 전자빔의 충돌 시 상기 양극부(300)에서 발생하는 열을 상기 케이스(100)의 외부로 방열하기 위한 냉각부(400);를 포함하여 구성된다.
Abstract:
PURPOSE: An x-ray generator is provided to generate more than two kinds of X-rays at the same time by including a plurality of cathode filaments and a plurality of anode targets. CONSTITUTION: A case(100) comprises a vacuum chamber inside thereof so that an electronic beam collides with multiple anode targets and is reflected to emit x-rays. A cathode unit(200) is included on one inner side of the case. The cathode unit comprises multiple cathode filaments consisting of a plurality of filaments(230a-230c). The plurality of filaments is heated by a voltage and emits the electronic beam. An anode unit(300) comprises a plurality of targets(330a-330c) corresponding to the plurality of filaments. A cooling unit(400) releases heat generated in the anode unit to outside the case.
Abstract:
Technology is described for electronically aligning a central ray 352 of an x-ray tube 210 to a radiation detector 240. In an example, an x-ray system includes an x-ray tube and a tube control unit (TCU). The x-ray tube includes a cathode that includes an electron emitter configured to emit an electron beam, an anode configured to receive the electron beam and generate x-rays with a central ray from electrons of the electron beam colliding on a focal spot of the anode, and a steering magnetic multipole between the cathode and the anode that is configured to produce a steering magnetic field from a steering signal. At least two poles of the steering magnetic multipole are on opposite sides of the electron beam. The TCU includes at least one steering driver configured to generate the steering signal. The TCU is configured to convert an offset value to the steering signal.
Abstract:
The invention relates to an X-ray testing device (1) for material testing for generating high-resolution geometric projections of a test object (100) by means of X-ray beams. It comprises a highly focusing X-ray source (10) comprising a rotary anode assembly (20) with a rotatably mounted anode plate (22) and an anode plate drive (28) which is configured to set the anode plate (22) into a rotary motion. Furthermore, it comprises an electron gun (40) which is configured to generate a focused electron beam (42), and an electron beam control unit (50), which comprises an electron beam deflecting unit (52) and a control unit (54), and which is configured to control the point of incidence (44) of the electron beam (42) generated by the electron gun (40) on the anode plate (22). Finally, a bracket (102) for a test object (100) is provided, with the position of the bracket (102) relative to the rotary anode assembly (20) being fixed or capable of being fixed. Furthermore, the invention relates to a method for generating high-resolution geometric projections of a test object (100) by means of X-ray beams, using an X-ray testing device according to the invention.The principle underlying the invention is to compensate for the motion of the focal point incident on the anode plate (22) which results from mechanical instabilities and/or thermal expansion of said anode plate (22).
Abstract:
Conventionally, the magnetic field generator was arranged perpendicularly to the axis of the electron beam. The magnetic field generator (4) of this invention is arranged so as to produce an asymmetric magnetic field.
Abstract:
The application describes a rotatable anode for an X-ray tube, wherein the anode comprises a first unit (901) adapted for being hit by a first electron beam at least a second unit (902) adapted for being hit by at least a second electron beam, wherein the first unit and the at least second unit are electrically isolated from each other. Further, the application describes an X-ray system, wherein the system comprises an anode according to the specification, a main cathode for generating an electron beam, wherein the main cathode is adapted to generate a first electrical potential, an auxiliary cathode for influencing a second electrical potential, wherein the main cathode is adapted to deflect the electron beam in order to heat the auxiliary cathode. Furthermore, the application shows a device for determining an electrical potential by detecting the point of impact of an electron beam onto an anode according to the specification and/or by detecting an X-ray spectrum of radiation starting from an anode according to the specification, wherein the electron beam is generated by a cathode, wherein the electron beam hits the first unit of the anode at the point of impact, wherein the electron beam can be deflected, wherein the deflected electron beam hits the second unit of the anode at the point of impact, wherein the first unit and / or second unit emit the radiation.