Cetteen Gmbh

Varex Imaging Corporation

Vec Imaging Gmbh & Co. Kg

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Houman Jafari

Vance Scott Robinson

Bo Gao

Colton Bridger Woodman

Ralf Burdenski

Immo Weber

Johannes Ringel

Mohamed Zaza

Stefan Fritz

Jörg Rehrmann

Some embodiments include a system, comprising: a plurality of x-ray sources, each x-ray source including: an electron source configured to generate an electron beam; and a target configured to receive the electron beam and convert the electron beam into an x-ray beam; wherein: at first x-ray source of the x-ray sources is different from a second x-ray source of the x-ray sources; and the targets of the x-ray sources are part of a linear target.

Hybrid multi-source x-ray source and imaging system

Some embodiments include an x-ray source, comprising: an anode; a field emitter configured to generate an electron beam; a first grid configured to control field emission from the field emitter; a second grid disposed between the first grid and the anode; and a middle electrode disposed between the first grid and the anode wherein the second grid is either disposed between the first grid and middle electrode or between the middle electrode and the anode.

X-ray source with multiple grids

The invention relates to a control device for an X-ray tube (), comprising a housing () that is designed as a shield, in which an anode current regulating unit () is arranged and which is connected to a cathode power supply unit (), a plurality of cathode voltage switches () which are to be connected to in each case a cathode (), and a programmable assembly (), in which the control of the cathodes () is determined. The cathode power supply unit (), the cathode voltage switches () and the programmable assembly () are also arranged in the housing ().

Control device for an x-ray tube and method for operating an x-ray tube

A MBFEX tube () for an x-ray device comprises, in a vacuum tube (), an anode () designed as a cooling finger and securely arranged in the vacuum tube, and a plurality of securely arranged cathodes (), wherein the vacuum tube () comprises a plurality of cathode feed lines () and no more than two high-voltage bushings (), in a high-voltage bushing () a coolant pipe () is passed through by an internal coolant inner pipe (), the coolant pipe () and the coolant inner pipe () are provided for cooling the anode () with a liquid coolant, the cathodes () are provided for field emission of electrons and are arranged on the anode () for generating x-ray sources (Q).

MBFEX tube

A method is disclosed for producing an electron emitter () with a component surface () of which is coated with a coating () that contains nanorods (), in particular carbon nanotubes. According to said method, an elastomer film is applied and is then peeled off to obtain a surface from which carbon nanotubes () with an upright orientation project upward from an inorganic and electrically conductive adhesive layer (). In another example, an overall coating region of the electron emitter () has an average number (n) of carbon nanotubes () with a predominantly upright orientation that project upward from the electrically conductive adhesive layer (), the number of nanotubes () with a predominantly upright orientation per mmprotruding from the adhesive layer deviating from the average value (n) by not more than 25% for each partial coating region of a size of at least 10mm.

Method for producing an electron emitter coated with a nanorod-containing coating

A transmission stage in polar loop technology includes an amplitude regulation means, a phase regulation means, a VCO and a feedback path. In the feedback path a variable amplifier is provided. The amplitude regulation means is further implemented in order to be controlled by a control means according to a request for a power variation in the output signal of the amplifier in order to correspondingly vary an amplitude control signal for the power amplifier. Simultaneously, the control means is implemented in order to correspondingly control the variable feedback path amplifier, so that the amplitude of the output signal of the variable feedback path amplifier remains in a narrowly limited predetermined range. Thus, power variations in the output signal of the amplifier operated in the non-linear area are held remote from the phase locked loop, so that the phase regulation means may be implemented at low cost and operates reliably anyway.

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Erlangen, Germany

Houman Jafari