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Conference Record of the 1991 IEEE Particle Accelerator Conference
The APS injector synchrotron has eighty correction magnets around its circumference to provide the vernier field changes required for beam orbit correction during acceleration. The arbitrary function generator (AFG) design is based on scanning out encoded data from a semi-conductor memory, a first-in-first-out (FIFO) device. The data input consists of a maximum of 20 correction values specified within the acceleration window. Additional points between these values are then linearly interpolateddoi:10.1109/pac.1991.164669 fatcat:ffdfnsz5m5a2rcki7f6eayejra