DEVELOPMENT OF GATED TURN-BY-TURN POSITION MONITOR SYSTEM FOR THE OPTICS MEASUREMENT DURING COLLISION OF SUPERKEKB

Abstract

Abstract Gated turn-by-turn monitor system to measure optics functions using non-colliding bunch has been developed for SuperKEKB accelerators. With the fast, glitch canceling beam switch, beam position of the target bunch will be measured without affecting the fine COD measurement using narrow-band detectors. The gate timing and the bunch position detection are controlled by the Spartan-6 FPGA. The performance of the system, such as the gate timing jitter, data transfer speed from the system to EPICS IOC and the noise effect to the downstream narrow-band detector are reported