Investigation of chromaticity sharing at the Cornell Electron Storage Ring

Author

Henderson, S. ; Littauer, R. ; McDaniel, B. ; Pelaia, T. ; Talman, R. ; Young, E.

Author_Institution

Lab. of Nucl. Studies, Cornell Univ., Ithaca, NY, USA

Volume

2

fYear

1997

fDate

12-16 May 1997

Firstpage

1472

Abstract

A potential advantage of the “Mobius” scheme, or any other strongly coupled lattice, is that the normal-mode oscillations are damped at rates which depend on both the horizontal and vertical chromaticities. This opens up the possibility of maintaining adequate damping even for quite negative chromaticity in one plane, provided the other is appropriately increased to compensate. This “chromaticity sharing” has been observed at CESR by introducing resonant coupling with weak skew quadrupoles and observing the coherent damping rates of shock-excited betatron oscillations

Keywords

electron accelerators; particle beam dynamics; storage rings; CESR; Cornell Electron Storage Ring; Mobius scheme; chromaticity sharing; coherent damping rates; normal-mode oscillations; quadrupoles; resonant coupling; shock-excited betatron oscillations; Couplings; Damping; Electrons; Frequency measurement; Lattices; Q measurement; Resonance; Steady-state; Storage rings; Turning;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.750730

Filename

750730