Energy change of a depolarizing resonance due to a type-3 Siberian snake

M. G. Minty*, T. J.P. Ellison, J. E. Goodwin, S. Y. Lee, P. V. Pancella, T. Rinckel, M. A. Ross, F. Sperisen, E. J. Stephenson, B. von Przewoski, R. Baiod, Y. S. Derbenev, A. D. Krisch, R. A. Phelps, T. Roser, B. S. van Guilder, B. Vuaridel, E. D. Courant, L. G. Ratner

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The authors measured the proton beam polarization in the IUCF (Indiana University Cyclotron Facility) Cooler Ring at five energies. They found that the Gλ = 2 imperfection depolarizing resonance occurred about 1.9 MeV below the expected resonance energy of 108.4 MeV. This energy shift could be due to a shift of about +0.0036 in the spin time, νs, which is the number of spin rotations in each turn around the ring. It was then demonstrated that this spin tune shift is consistent with the cooler ring containing a partial type-3 Siberian snake, which is apparently caused by the magnets that confine the electron and proton beams in the cooling region.

Original languageEnglish
Title of host publicationConference Record of 1991 IEEE Particle Accelerator Conference
PublisherPubl by IEEE
Pages2506-2508
Number of pages3
ISBN (Print)0780301358
StatePublished - 1991

Publication series

NameConference Record of 1991 IEEE Particle Accelerator Conference

ASJC Scopus subject areas

  • General Engineering

Fingerprint

Dive into the research topics of 'Energy change of a depolarizing resonance due to a type-3 Siberian snake'. Together they form a unique fingerprint.

Cite this