Head-tail stability and linear coupling in the Tevatron

Author

Goderre, G.P. ; Peggs, S. ; Annala, G. ; Bogacz, S.A. ; Herrup, D. ; Saritepe, S. ; Sullivan, T. ; Williams, T.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

fYear

1991

fDate

6-9 May 1991

Firstpage

1848

Abstract

During collider studies it was observed that with bunch intensities of >60*10/sup 9/ particles per bunch in the Tevatron, the beam would go unstable if the machine ran close to the coupling resonance. Simple head-tail stability only requires the horizontal and vertical chromaticities to be positive. Since the beam went unstable even when this condition was met, a set of experiments were performed which showed that if there is significant linear coupling the head-tail stability criterion is modified. A formalism for calculating head-tail stability is presented. The predictions of the formalism are compared to data taken with the Tevatron.<>

Keywords

particle beam diagnostics; proton accelerators; synchrotrons; Tevatron; chromaticities; coupling resonance; head-tail stability; linear coupling; particle beam diagnostics; Colliding beam accelerators; Colliding beam devices; Differential equations; Laboratories; Optical coupling; Particle accelerators; Particle beams; Radio access networks; Resonance; Stability criteria;

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.1991.164798

Filename

164798