Semiconductor-detector-based method and device for detecting ionising radiation

摘要

A device for detecting ionizing radiation results in charges forming in a sensor covered with a plurality of electrodes that are each connected to an electronic circuit adapted to deliver, to a processing module, a first signal indicating when charge has been collected by the electrode connected to said circuit. Each central circuit is adapted, when a central electrode has collected charge, to determine a possible detection overlap with one of the adjacent electrodes; to determine a priority detection overlap with an adjacent priority circuit; to transmit or receive to/from the adjacent priority circuit a request to participate in a detection overlap and to receive or transmit from/to the adjacent priority circuit an indication of availability; and to transmit said first signal except in the case where an availability indication has been transmitted to the adjacent priority circuit.

主权项

1. A device for detecting an ionizing radiation comprising a sensor wherein the ionizing radiation causes the forming of charges, the sensor being covered with a plurality of electrodes, each connected to an electronic circuit configured to supply a processing unit with a first signal indicating that charges are being collected by the electrode connected to said electronic circuit;
wherein at least one electrode, called central electrode, is surrounded with at least two electrodes, called adjacent electrodes, the circuit connected to the central electrode, called central circuit, configured to exchange signals with each of the circuits connected to the adjacent electrodes, called adjacent circuits; wherein each central or adjacent circuit is configured to respectively send to the adjacent or central circuit a second detection signal when charges are being respectively collected on the central electrode or an adjacent electrode; wherein each central or adjacent circuit is configured to respectively send to the adjacent or central circuit a request to participate in a detection overlap and respectively receiving from the adjacent or central circuit an availability indication; wherein each central circuit comprises an analysis and control device is configured to, when the central electrode has collected charges: (a) determine, within a time range, a possible detection overlap between the central electrode and at least one of the adjacent electrodes based on the detection signals; (b) in the case of a detection overlap, determine a first priority detection overlap with an adjacent circuit, called priority circuit, for which the second detection signals of the priority adjacent circuit and of the central circuit have the highest probability of corresponding to a same received photon; (c) transmit to or receive from the priority adjacent circuit a request to participate in a detection overlap and receive from or transmit to the priority adjacent circuit an availability indication; and (d) transmit said first signal to the processing unit except in the case where a detection overlap has been determined within said time range and where an availability indication has been sent to the priority adjacent circuit.