| 摘要 |
In the present invention, a detector signal processing circuit comprises the following: a current and voltage conversion unit that converts a current value, converted by a neutron detector, to a voltage value which is in accordance with such current value; a variable gain amplification unit that includes an operational amplifier to which a D/A converter is attached, and that amplifies the voltage value converted by the current and voltage conversion unit; an adjustment control means that adjusts the gain of the D/A converter; and a comparator that automatically compares, on the basis of a reference value set beforehand, the output voltage which was amplified by the variable gain amplification unit, and that outputs such results to the adjustment control means. |
