| Title |
Beam-based Impedance Measurement Techniques |
| Authors |
- V.V. Smaluk
BNL, Upton, Long Island, New York, USA
|
| Abstract |
Characterization of a vacuum chamber impedance is necessary to estimate stability conditions of a particle beam motion, to find a limit of the beam intensity and characteristic times of single-bunch and multi-bunch instabilities. For new accelerator projects, minimization of the vacuum chamber impedance is now the mandatory requirement. For an accelerator in operation, the impedance can be measured experimentally using various beam-based techniques. The beam-impedance interaction manifests itself in measurable beam parameters, such as betatron tunes, closed orbit, growth rates of instabilities, bunch length and synchronous phase. The beam-based techniques developed for measurement of the longitudinal and transverse impedance are discussed, including theoretical basics and experimental results.
|
| Funding |
Work supported by DOE under contract No.DE-AC02- 98CH10886 |
| Paper |
download TUT3AH3.PDF [0.498 MB / 8 pages] |
| Export |
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| Conference |
eeFACT2016, Daresbury, UK |
| Series |
ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e^+e^- Colliders (58th) |
| Proceedings |
Link to full eeFACT2016 Proccedings |
| Session |
Impedance Issues and Beam Instabilities |
| Date |
25-Oct-16 14:00–17:35 |
| Main Classification |
Impedance issues and beam instabilities |
| Keywords |
ion, impedance, vacuum, simulation, damping |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Ning Zhao (IHEP, Beijing, China); John Poole (CERN, Geneva, Switzerland); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-187-8 |
| Published |
July 2017 |
| Copyright |
|
