Simple Q-Measurement of KEK Proton Synchrotron

A simple, and rich in information, method for Q-measurement is developed. The method is essentially Fourier analysis, using a transient recorder and minicomputers. The word "simple" is for electronic circuit, though the program of computer is not so complicated. We use the revolution frequency of bunched protons as a "clock", so our method is free from recalibration or elimination of revolution frequency. We were able to measure Q-value even in the case that betatron oscillation was very rapidly damped.