Experimental verification of predicted beam-polarization oscillations near a spin resonance.
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.
Morozov
V S
VS
Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1040, USA.
Chao
A W
AW
Krisch
A D
AD
Leonova
M A
MA
Raymond
R S
RS
Sivers
D W
DW
Wong
V K
VK
Garishvili
A
A
Gebel
R
R
Lehrach
A
A
Lorentz
B
B
Maier
R
R
Prasuhn
D
D
Stockhorst
H
H
Welsch
D
D
Hinterberger
F
F
Ulbrich
K
K
Schnase
A
A
Stephenson
E J
EJ
Brantjes
N P M
NP
Onderwater
C J G
CJ
da Silva
M
M