The control and operation of the programmable wave form generator for the SSRL injector

A CAMAC-based programmable wave form generator which is used to control the quadrupole and sextupole trim power supplies for the 3-GeV booster synchrotron injector for the electron storage ring SPEAR is described. This same type of unit is used to vary the cavity voltage of the RF system. Memory located in the CAMAC module is loaded with a waveform and output to the supplies with an internal clock. The waveform can be loaded either graphically using the X-windows-based control system or with an ASCII text file.<
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