Solid state radiation detector and method for testing the same
View Patent ↗A solid state radiation detector constituted by a solid state detecting section having multitudes of charge detecting linear electrodes and multitudes of auxiliary linear electrodes; a test signal generating means for generating a test signal; and a connection switching means for connecting at least one end of the auxiliary linear electrodes to either the test signal generating means or ground. The test signal is inputted to the auxiliary linear electrodes and crosstalk signals outputted based on the test signal from the charge detecting linear electrodes adjacent to the auxiliary linear electrodes to which the test signal has been inputted are detected and compared with a predetermined reference signal in order to check the charge detecting linear electrodes and auxiliary linear electrodes for breakage.
1. A solid state radiation detector, comprising:
a solid state detecting section constituted by a set of layers layered in the order of:
a first conductive layer having transparency to recording light,
a recording photoconductive layer that shows conductivity when exposed to the recording light;
a charge storage section for storing an amount of electric charges corresponding to the amount of the recording light;
a readout photoconductive layer that shows conductivity when exposed to readout light; and
a second conductive layer having multitudes of charge detecting linear electrodes and multitudes of auxiliary linear electrodes, the charge detecting linear electrodes and auxiliary linear electrodes being arranged alternately;
a test signal generating means for generating a test signal; and
a connection switching means for connecting at least one end of the auxiliary linear electrodes to either the test signal generating means or ground.
2. A method for testing the solid state radiation detector of claim 1 in which the charge detecting linear electrodes and auxiliary linear electrodes of the solid state detecting section of the solid state detector are checked for breakage, the method comprising the steps of:
connecting the test signal generating means to the auxiliary linear electrodes;
inputting the test signal to the auxiliary linear electrodes;
detecting signals outputted based on the test signal from the charge detecting linear electrodes adjacent to the auxiliary linear electrodes to which the test signal has been inputted; and
comparing the output signals with a predetermined reference signal to check the charge detecting linear electrodes and auxiliary linear electrodes for breakage.