Beam optics issues for the antiproton decelerator

Author

Belochitskii, P. ; Carli, C. ; Eriksson, T. ; Giannini, R. ; Maury, S. ; Möhl, D. ; Pedersen, F.

Author_Institution

CERN, Geneva, Switzerland

Volume

2

fYear

1997

fDate

12-16 May 1997

Firstpage

1382

Abstract

The deceleration of the beam down to 0.1 GeV/c in the ring previously used as Antiproton Collector (AC) at 3.5 GeV/c, requires a number of modifications to the lattice. The insertion of the electron cooling, needed to cool the antiproton beam at low energy, implies the re-arrangement of quadrupoles. The optical functions then need to be readjusted in order to keep the large acceptance and to cope with the electron and stochastic cooling environment. Calculations of the linear optics and of the acceptance are reported. Tests of beam deceleration in the AC show the need for closed-orbit correction at low momentum in addition to the static correction by the movement of the quadrupoles available in the present configuration. The deceleration tests will be discussed and a correction system, which includes trim supplies on the main bending magnets, will be described

Keywords

accelerator magnets; beam handling techniques; electromagnets; ion optics; linear accelerators; proton accelerators; stochastic processes; 0.1 GeV; Antiproton Collector; antiproton beam; antiproton decelerator; beam optics issues; bending magnets; closed-orbit correction; electron cooling insertion; lattice modifications; linear optics; optical functions; quadrupoles rearrangement; static correction; stochastic cooling; Cooling; Electron beams; Electron optics; Lattices; Optical beams; Particle beam injection; Particle beams; Protons; Stochastic processes; System testing;

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.1997.750700

Filename

750700