RHIC Spin Flipper Commissiong Results and Future Plans. RSC Meeting, June 17 2002, Mei Bai. RHIC polarized proton setup Spin manipulation using a dipole with horizontal oscillating magnetic field Rhic spin flipper commissioning Future plans. RHIC spin flipper. 12:00 o’clock.
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RSC Meeting, June 17 2002, Mei Bai
BRAHMS & PP2PP (p)
High Intensity Source
Pol. Proton Source
Au sourceRHIC polarized proton setup
other by 180 in phase
the spin precesses around is
and is independent of beam
energy. In RHIC, the two snakes’
axes are perpendicular to each
other and the nominal spin tune
1,2is the angle between the snake
axis and the beam direction
xSpin motion in the presence of the ac dipole
A spin resonance then happens when
The strength of this resonance is
For BmL=100 Gauss-m and 100 GeV/c pp, the resonance
strength is 0.00046.
xSpin manipulation using ac dipole
-- measure the spin tune
-- spin flipping
where ; time to achieve 99.9% spin flip 1 sec
0.47Spin flipper commissioning ------- Blue Ring
the predicted spin tune equals to 0.48.
the resonance during the amplitude ramping
0.47Spin flipper commissioning --------- Yellow Ring
predicted spin tune equals to 0.48.