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| WEPP030 |
Betatron Phase Advance Measurements Using the Gated Turn-by-turn Monitors at SuperKEKB |
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- G. Mitsuka, K. Mori, M. Tobiyama
KEK, Ibaraki, Japan
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In the SuperKEKB commissioning Phases 2 (Feb.-Jul., 2018) and 3 (from Mar. 2019), the betatron phase advances between adjacent beam position monitors have been measured using a total of 138 gated turn-by-turn monitors. A fast RF gating of the monitors enables turn-by-turn beam position detections by focusing only on an artificially-excited non-colliding bunch, while leaving colliding bunches unaffected. Betatron phase advances measured by the gated turn-by-turn monitors and accordingly obtained betatron functions were consistent with the closed orbit measurements. High signal-to-noise ratio were achieved by advanced signal extraction methods such as NAFF, SVD, and independent component analysis.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP030
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| About • |
paper received ※ 03 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
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