Comet Holding Ag

Adrian Riedo

Kurt Holm

Mark Joachim Mildner

Toni Waber

Hans Reusser

Lars-Ola Nilsson

An X-ray tube includes a vacuum-sealed tube housing evacuated to a pressure of 10mbar or lower, a cathode assembly inside the housing including an electron emitter adapted to emit electrons when heated at a temperature included in a defined working temperature range and at least one component containing carbon in an amount of at least 20% by weight, especially at least 30% by weight, even more especially at least 50% by weight, the at least one component being preferably designed for holding the emitter, and an anode assembly inside the housing including a target layer for receiving electrons emitted by the electron emitter, wherein the electron emitter preferably includes boride, preferably lanthanum hexaboride (LaB), and wherein the cathode assembly is designed such that if the emitter temperature is included in the working temperature range.

X-ray tube and associated manufacturing process

In a high-voltage X-ray tube, which a cathode, which is held at negative high voltage during operating conditions, and an anode, which is held at positive high voltage during operating conditions, are disposed opposite each other in a vacuumized inner space, the anode being attached to an anode insulation element in such a way that the anode insulation element has a cylindrical shape or a shape tapering toward the anode and includes an opening to receive a high-voltage plug, and a pipe structure is provided by means of which a coolant is able to be supplied to the anode. This coolant can be in particular insulating oil or another electrically non-conducting liquid. The pipe structure can, for example, be integrated completely into the interior of the anode insulation element, but can also be integrated into the surface of the high-voltage plug. A solution is also possible in which the pipe structure is integrated into an intermediate element, which is situated between the anode insulation element and the high-voltage plug.

X-ray tube with an anode insulation element for liquid cooling and a receptacle for a high-voltage plug

X-ray tube () for high dose rates, a corresponding method for generating high dose rates with X-ray tubes () as well as a method for producing corresponding X-ray devices (), in which an anode () and a cathode () are disposed opposite each other in a vacuumized internal chamber (), electrons e&#x2212; being accelerated to the anode () by means of impressible high voltage. The anode () is made of a layer or coating of a metal having a high atomic number, for conversion of the electrons (e) into X-ray radiation (&#x3b3;) with cooling. The cathode () comprises a substrate substantially transparent for X-ray radiation (&#x3b3;). In particular, the likewise substantially transparent for X-ray radiation (&#x3b3;). In particular, the cathode () can close off the vacummized internal chamber () toward the outside.

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Düdingen, Switzerland

Adrian Riedo