Journal Article

PreJuSER-59063

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unexpected reduction of rf spin resonance strength for stored deuteron beams

Krisch, A. D. ; Leonova, M. A. ; Morozov, V. S. ; Raymond, R. S. ; Sivers, D. W. ; Wong, V. K. ; Gebel, R.FZJ* ; Lehrach, A.FZJ* ; Lorentz, B.FZJ* ; Maier, R.FZJ* ; Prasuhn, D.FZJ* ; Schnase, A. ; Stockhorst, H.FZJ* ; Hinterberger, F. ; Ulrich, K.

2007
Soc. [S.l.] @

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Please use a persistent id in citations: http://hdl.handle.net/2128/11164  doi:10.1103/PhysRevSTAB.10.071001

Abstract: Stored beams of polarized protons, electrons, or deuterons can be spin flipped by sweeping an rf dipole's or solenoid's frequency through an rf spin resonance. Fitting such data to the modified Froissart-Stora equation's spin resonance strength epsilon(FS) gave very large deviations from the *epsilon(Bdl) obtained from each rf magnet's integral B(rms)dl. We recently varied an rf dipole's frequency sweep range Delta f, and the momentum spread Delta p/p and betatron tune v(y) of stored 1.85 GeV/c polarized deuterons. We found a sharp constructive interference when v(y) was near an intrinsic spin resonance. Moreover, over large Delta f and Delta p/p ranges, epsilon(FS) was about 7 times smaller than the predicted *epsilon(Bdl).

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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