Correction of Gas Multiplication Uniformity of X-ray Detector by Voltage Compansation Method

Abstract

We experiment on the method to obtain the uniform gas multiplication in multiwire proportional counter. The general technique of anode wire connection to the high voltage supply could not secure the uniformity of multiplication because of the edge effect at the outer anode wires. We found that the variation of the multiplication could be corrected in the accuracy of +-1.6% rms using the voltage compansation method.