Magnetic field measurements of the main injector sextupole magnets

Author

Bhat, C.M. ; Brown, B.C. ; Harding, D.J. ; Fang, Si J. ; Martin, P.S. ; Glass, H.D. ; Sim, J.W. ; Walbridge, D.G.C.

Author_Institution

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

Volume

3

fYear

1997

fDate

12-16 May 1997

Firstpage

3242

Abstract

The Fermilab Main Injector (MI) will accelerate (decelerate) protons and anti-protons from 8.9 GeV/c to 150 GeV/c (150 GeV/c to 8.9 GeV/c). To achieve high intensity stable beam in the MI throughout the acceleration or deceleration mode, two families of chromaticity compensation sextupole magnets are planned. The operating schemes for the chromaticity compensation systems will be different for the two modes because of the hysteresis of the sextupole magnets and the changed sign of the sextupole field component from beam tube eddy currents in the dipoles. Hence we have carried out detailed magnetic field measurements on some sextupole magnets. Here we present the results of the measurements and their implications on the acceleration and the deceleration cycles of the MI

Keywords

accelerator magnets; booster injectors; magnetic field measurement; proton accelerators; synchrotrons; 8.9 to 150 GeV; Fermilab Main Injector; acceleration cycles; beam tube eddy currents; chromaticity compensation sextupole magnets; deceleration cycles; high intensity stable beam; magnetic field measurements; main injector sextupole magnets; sextupole field component; Acceleration; Current measurement; Current supplies; Eddy currents; Gold; Magnetic field measurement; Magnets; Power measurement; Power supplies; Rotation measurement;

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.1997.753168

Filename

753168