Phys. Rev. Lett. 100, 054801 (2008) [4 pages]Experimental Verification of Predicted Beam-Polarization Oscillations near a Spin ResonanceReceived 22 September 2007; published 5 February 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.054801
DOI:
10.1103/PhysRevLett.100.054801
PACS:
29.27.Bd, 29.27.Hj, 41.75.Ak
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