Voltage stabilization for grid-controlled X-ray tubes

摘要

The present embodiments improve the radiation monochromy of an x-ray device with a control electrode for controlling a flow of electrons generated between a cathode and an anode. A correction voltage is generated in accordance with a correction function. This correction voltage is used for correction of a voltage applied between the anode and the cathode in terms of a constant voltage, even in the period of control using the control electrode. The voltage applied between the anode and the cathode is corrected with the generated correction voltage.

主权项

1. An x-ray device with a cathode and an anode to thereby generate x-rays, the x-ray device comprising:
a correction function generation unit configured to generate a correction signal based on a correction function; a voltage generator coupled to the correction function generation unit and configured to generate a correction voltage, based on the correction signal, to correct a voltage applied between the anode and the cathode in terms of voltage constancy; and a control electrode between the cathode and the anode for controlling a flow of electrons generated between the cathode and the anode, the control electrode being configured to correct the voltage applied between the anode and the cathode, based on the correction voltage, during a period of control;
wherein the correction function generation unit is further configured to generate the correction signal at a variable start time, and wherein the variable start time comprises a time that is earlier than a start time of the voltage to be corrected.