Ion Phase Measurement Techniques of the Birmingham Cyclotron

The experimental technique used for internal beam ion phase measurements on the Birmingham cyclotron is described. Ion phase measurements were carried out by measuring the target current waveform of a screened two-electrode target with an equipment based on a sampling technique, having a resolution of 1.5 m¿sec and a sensitivity of 5 ¿a/cm deflection. The target current waveform was displayed on a cathode-ray-tube screen against the sine of the cyclotron RF phase or in polar coordinates.