First spin flipping of a stored spin-1 polarized beam.
We recently studied spin flipping of a 270 MeV vertically polarized deuteron beam stored in the Indiana University Cyclotron Facility Cooler Ring. We adiabatically swept an rf solenoid's frequency through an rf-induced spin resonance and observed its effect on the deuterons' vector and tensor polarizations. After optimizing the resonance crossing rate and maximizing the solenoid's voltage, we measured a vector spin-flip efficiency of 94.2%+/-0.3%. We also found striking behavior of the spin-1 tensor polarization.
Morozov
V S
VS
Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1120, USA.
Etienne
Z B
ZB
Kandes
M C
MC
Krisch
A D
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Leonova
M A
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Sivers
D W
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Wong
V K
VK
Yonehara
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K
Anferov
V A
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Meyer
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Schwandt
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P
Stephenson
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von Przewoski
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B