Rigaku Corporation

Akira Tsukiyama

Takuto Sakumura

Yuji Tsuji

Pawel Grybos

Robert Szczygiel

Piotr Maj

Shinnichi Ohya

To provide an X-ray detector facilitating the installing and replacement work of a module while reducing the possibility of breakage. An X-ray detectordetecting X-ray image data for each detection module includes: a detection moduleprovided with a protruding frame on a back side of a detection device detecting X-rays; and a guide framefitting into the protruding frame and removably supporting the detection device, wherein the guide framefixes the position of the detection device relative to the guide frameby fitting. Therefore, fitting the protruding frameinto the guide frameenables precise and easy installation/removal of the detection module. That is a detection module can be newly installed onto the guide frame without interfering each other with adjacent detection modules already installed while minimizing a space therebetween.

X-ray detector

A radiation detectorhas a plurality of single-photon-counting imaging cells, including an imaging cellconfigured to generate a detection signal in accordance with the intensity of radiation, a digitization circuitconfigured to digitize the detection signal, a data read structureconfigured to count the digitized detection signal and to keep the result as a data bit, and a send-out registerconfigured to control the input of a predetermined data bit output from the data read structureby a data shift in accordance with a first clock Pck, to keep the input data bit as a result of the control, and to send out the kept data bit by a data shift in accordance with a second clock Sck.

Radiation detector

There is provided a radiation detector that appropriately corrects an offset within a minute read cell without increasing area while achieving high-speed measurement at a high counting rate. A radiation detectorhaving a plurality of single-photon-counting imaging cells includes, for each imaging cell, a photodiodewhich is applied with a reverse bias voltage and generates a current signal in response to incidence of radiation, a previous-stage DA converter dconfigured to correct an input signal based on the current signal generated by the photodiode, an amplifier kconfigured to amplify the signal corrected by the previous-stage DA converter d, a subsequent-stage DA converter dconfigured to correct a charge signal amplified by the amplifier k, a wave height discriminatorconfigured to discriminate output signals based on the signal corrected by the subsequent-stage DA converter d, and a counterconfigured to count the discriminated signals.

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Hino, Japan

Akira Tsukiyama