Damping Transverse Instabilities in the Tyevatron Using AC Chromaticity

Damping Transverse Instabilities in the Tyevatron Using AC Chromaticity

Several papers [1],[2] have suggested possibility of using varying chromaticity to damp the head-tail instability. We test this by cycling the chromaticity sextupole magnets in the Tevatron near the synchrotron frequency to see if the head-tail stability threshold is increased. Further we compare th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Ranjbar, V.H.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
CAMAC
Damping
Frequency estimation
Impedance
Magnets
Protons
Stability
Synchrotrons
Testing
Transfer functions
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Beschreibung
Zusammenfassung:Several papers [1],[2] have suggested possibility of using varying chromaticity to damp the head-tail instability. We test this by cycling the chromaticity sextupole magnets in the Tevatron near the synchrotron frequency to see if the head-tail stability threshold is increased. Further we compare the turn-by-turn evolution of a bunch slice in the pres ence of varying chromaticity to a model previously developed.
ISSN:1944-4680
2152-9582
DOI:10.1109/PAC.2005.1591574