How to get a separatrix branch with low divergence at 1/3-integer resonant beam slow extraction

Author

Volin, S.P.

Author_Institution

Inst. for Nucl. Res., Acad. of Sci., Moscow, USSR

fYear

1991

fDate

6-9 May 1991

Firstpage

1902

Abstract

Consideration is given to the separatrix dependent on chromaticity in 1/3-integer resonance. It means that the outgoing separatrices do not overlap for different momentums, in other words, they appear to be smeared. It is desired to get a separatrix branch with low divergence at the septum position in order to minimize the particle losses on it. W. Hardt (1981) proposed the method for compensation of this effect by introducing nonzero dispersions in the beam extraction straight section. But in his formula only global chromaticity is included and not local chromaticity. Formulas are proposed using analytic techniques for solving this problem including both global and local chromaticity effects.<>

Keywords

particle beam diagnostics; proton accelerators; synchrotrons; 1/3-integer resonance; Moscow Kaon Factory Extended Ring; beam extraction straight section; global chromaticity; local chromaticity; particle beam diagnostics; separatrix; septum position; Dispersion; Frequency; Impedance; Lattices; Mesons; Particle beams; Production facilities; Resonance; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-0135-8

Type

conf

DOI

10.1109/PAC.1991.164816

Filename

164816