A Bias Function Generator for the Zero Gradient Synchrotron

An Analog function generator producing a biasing current for the permeability-tuned master oscillator of the zero gradient synchrotron is described. It produces the bias function with a precision of ± 0.02 per cent and is capable of delivering about 3 amperes of current into a predominantly resistive load of a quarter of an ohm. The input information to the function generator is obtained from proton accelerator parameters such as the magnetic guide field B
_g
and B
_g
and the guide magnet current I
_g
and İ
_g
. The total bias function is obtained as a result of adding outputs from the 1) B
_g
read-out, 2) hump generator, and 3) biased diode network. A specially developed electronic system and an analog-to-digital converter have been employed to make static and dynamic measurements with a view to determining the precision of the function generator.