Experimental Verification of Predicted Beam-Polarization Oscillations near a Spin Resonance

V. S. Morozov*, A. W. Chao, A. D. Krisch, M. A. Leonova, R. S. Raymond, D. W. Sivers, V. K. Wong, A. Garishvili, R. Gebel, A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, H. Stockhorst, D. Welsch, F. Hinterberger, K. Ulbrich, A. Schnase, E. J. Stephenson, N. P. M. BrantjesC. J. G. Onderwater, M. da Silva

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The Chao matrix formalism allows analytic calculations of a beam's polarization behavior inside a spin resonance. We recently tested its prediction of polarization oscillations occurring in a stored beam of polarized particles near a spin resonance. Using a 1.85 GeV/c polarized deuteron beam stored in the COoler SYnchrotron, we swept a new rf solenoid's frequency rather rapidly through 400 Hz during 100 ms, while varying the distance between the sweep's end frequency and the central frequency of an rf-induced spin resonance. Our measurements of the deuteron's polarization near and inside the resonance agree with the Chao formalism's predicted oscillations.
Original languageEnglish
JournalPhysical Review Letters
Volume100
Issue number5
DOIs
Publication statusPublished - 8 Feb 2008
Externally publishedYes

Keywords

  • COSY
  • SYNCHROTRON
  • SCATTERING
  • DEUTERONS
  • PROTONS

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