Frequent polarization reversals, or spin-flips, of a stored polarized beam in a high energy scattering asymmetry experiments may greatly reduce systematic errors of spin asymmetry measurements. A spin-flipping technique is being developed by using rf magnets running at a frequency close to the spin precession frequency, thereby creating spin-depolarizing resonances; the spin can then be flipped by ramping the rf magnet’s frequency through the resonance. We studied, at the Indiana University Cyclotron Facility Cooler Ring, properties of such rf depolarizing resonances in the presence of a nearly-full Siberian snake and their possible application for spin-flipping. By using an rf-solenoid magnet, we reached a 98.7$\pm$1$\%$ efficiency of spin-flipping. However, an rf-dipole magnet is more practical at high energies; hence, studies of spin-flipping by an rf-dipole are underway at IUCF. I would like to thank Professor Alan Krisch for his valuable advice, enouragement and support. I also thank my dissertation committee members their helpful comments and suggestions to this thesis. I thank my fellow collaborators from Michigan, Indiana, Protvino and Brookhaven for many hours they devoted to this experiment. I would especially like to thank Rick Phelps for teaching me a lot about how the experiment works.

I would like to thank the IUCF technical staff for their hard work on successful experiment operation. In particular, I want to thank the operators headed by Gary East with help from Terry Sloan for giving us beam when we needed it, the cryogenics experts Kevin Komisarcik and John Vanderwerp for keeping our snake cool, and the polarizaed ion source group headed by Vladimir Derenchuk for making polarized protons out of hydrogen gas.

Finally, I would like to thank my parents, my big brother and my little sister for their love and support, and my wife Svetlana for always being there when I needed her.
