| Paper |
Title |
Page |
| MOPP026 |
A Longitudinal Kicker Cavity for the BESSY II Booster |
150 |
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- T. Atkinson, M. Dirsat, A.N. Matveenko, A. Schälicke, B. Schriefer, Y. Tamashevich
HZB, Berlin, Germany
- T. Flisgen
FBH, Berlin, Germany
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As part of the global refurbishment of the injector systems at BESSY II, a new longitudinal kicker cavity and suitable feedback will be installed in the booster. Both a flexible bunch charge and spacing is essential for efficient injection. Such a cavity is needed to mitigate the unwanted couple bunch instabilities associated with these elaborate filling patterns and the HOMs of additional accelerating structures. This paper covers the conceptual design, simulation strategy, manufacture and bench tests of the longitudinal kicker cavity before it is installed in the ring.
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Poster MOPP026 [4.756 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP026
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| About • |
paper received ※ 02 September 2019 paper accepted ※ 07 September 2019 issue date ※ 10 November 2019 |
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| WEPP003 |
A new button-type beam position monitor for BESSY II and BESSY VSR |
508 |
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- J.G. Hwang, V. Dürr, F. Falkenstern, M. Ries, A. Schälicke, G. Schiwietz, D. Wolk
HZB, Berlin, Germany
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Funding: This work was supported by the German Bundesministerium für Bildung und Forschung, Land Berlin and grants of Helmholtz Association.
The future BESSY VSR system involves more than one order-of-magnitude differences in the total charge of adjacent short and long bunches within the bunch train. Thus, any signal ringing beyond a nanosecond in time will cause a misreading of beam position and current, specifically for low bunch charges. This calls for improved performance for the bunch-selective operation of the beam-position-monitor (BPM) system. We report on the corresponding design and fabrication of a new button BPM with advanced features, such as impedance matching inside the button as well as optimization of insulator material, button size, and position, for reduced crosstalk between buttons.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP003
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| About • |
paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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| |