Author :
Anferov, V.A. ; Blinov, B.B. ; Crandell, D.A. ; Derbenev, Ya.S. ; Kageya, T. ; Koutin, S.V. ; Krisch, A.D. ; Phelps, R.A. ; Lorenzon, W. ; Ratner, L.G. ; Sivers, D.W. ; Sourkont, K.V. ; Wong, V.K. ; Youssof, S.S. ; Chu, C.M. ; Lee, S.Y. ; Rinckel, T. ; Sc
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
Recent polarized proton beam experiments in the IUCF Cooler Ring found an evidence for a second-order snake depolarizing resonance, when the vertical betatron tune was inadvertently set near a quarter-integer. We have also studied the possibility of spin-flipping the beam polarization in the presence of a full Siberian snake using an RF solenoid. By varying the rf solenoid´s ramp time and frequency range, we reached a spin-flip efficiency of about 97%
Keywords :
beam handling equipment; beam handling techniques; particle beam stability; proton accelerators; proton polarisation; storage rings; IUCF Cooler Ring; RF solenoid; Siberian snake experiments; beam polarization; frequency range; polarized proton beam experiments; ramp time; second-order snake depolarizing resonance; spin-flip efficiency; spin-flipping; vertical betatron tune; Acceleration; Accelerator magnets; Cooling; Electrons; Particle beams; Polarization; Proton accelerators; Resonance; Solenoids; Storage rings;
