IBIC2017 - List of Authors (Tobiyama, M.)

Paper	Title	Page
TUPCF09	Turn-by-Turn Timing Systems for SuperKEKB Damping Ring Position Monitors	221
	M. Tobiyama, H. Ikeda KEK, Ibaraki, Japan
	Turn-by-turn timing systems for SuperKEKB beam position monitors using Xilinx Zynq FPGA have been developed. The RF frequency divider with external synchronization circuit creates a fiducial signal synchronized to the accurate injection timing from the injector event system. As the Log-Ratio turn-by-turn monitors (Digitex 18k11) need clock timing deviation to the beam signal within 8 ns, the cable length from the BPM heads to the detectors have been adjusted with the maximum deviation less than 1 ns using TDR. The time delay to adjust each cable lengths and the BPM placements have been created by using 32-ch RF timing delay with the step of 2 ns. The start trigger to the 18k11 has been made by using the digital delay (SRS DG645) from the injection trigger. The measured performance of the frequency divider, the 32-ch RF timing delay and start trigger system will be shown.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF09
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Paper

Title

Page

Turn-by-Turn Timing Systems for SuperKEKB Damping Ring Position Monitors

221

M. Tobiyama, H. Ikeda
KEK, Ibaraki, Japan

Turn-by-turn timing systems for SuperKEKB beam position monitors using Xilinx Zynq FPGA have been developed. The RF frequency divider with external synchronization circuit creates a fiducial signal synchronized to the accurate injection timing from the injector event system. As the Log-Ratio turn-by-turn monitors (Digitex 18k11) need clock timing deviation to the beam signal within 8 ns, the cable length from the BPM heads to the detectors have been adjusted with the maximum deviation less than 1 ns using TDR. The time delay to adjust each cable lengths and the BPM placements have been created by using 32-ch RF timing delay with the step of 2 ns. The start trigger to the 18k11 has been made by using the digital delay (SRS DG645) from the injection trigger. The measured performance of the frequency divider, the 32-ch RF timing delay and start trigger system will be shown.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF09

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)