Optical Bunch-by-bunch Beam Diagnostic System in Kek-pf
نویسندگان
چکیده
An optical bunch-by-bunch beam diagnostic system, which can detect oscillations of individual bunches in a multi bunch operation, has been developed. The system is com posed of a high-speed light shutter and an optical beam oscillation detector. The shutter that consists of a pockels cell and polarizers can be opened or closed in a bunch spac ing time (2ns in KEK-PF) and it can select a light pulse cor responding to a certain bunch in a bunch train. The beam oscillation detector can detect oscillations of the picked out bunch with a spectral analysis method. The diagnostic system has been installed in KEK-PF Beamline-21, and ob served vertical oscillation of individual bunches due to an instability in the multi-bunch operation.
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