What is it about?
A direct simultaneous detection of electron ($e^-$) and positron ($e^+$) bunches was successfully performed using wideband beam monitors and a detection system at the $e^+$ capture section of the SuperKEKB B-factory. The time intervals between the secondary-generated $e^-$ and $e^+$ bunches were measured to investigate their dynamical capture process.
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Why is it important?
The results show that the time intervals were measured in the range of 20--280 ps on average, and the line-order switch of the $e^-$ and $e^+$ bunches and their dynamical phase-slip process in the axial direction were clearly observed as a function of the capture phase of accelerating structures.
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This page is a summary of: Direct observation of positron capture process at the positron source of the superKEKB B-factory, Scientific Reports, November 2022, Springer Science + Business Media, DOI: 10.1038/s41598-022-22030-5.
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