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@inproceedings{huang:ipac2021-mopab014,
author = {H. Huang and J. Kewisch and C. Liu and A. Marusic and W. Meng and F. Méot and P. Oddo and V. Ptitsyn and V.H. Ranjbar and T. Roser},
% author = {H. Huang and J. Kewisch and C. Liu and A. Marusic and W. Meng and F. Méot and others},
% author = {H. Huang and others},
title = {{First High Spin-Flip Efficiency for High Energy Polarized Protons}},
booktitle = {Proc. IPAC'21},
pages = {84--86},
eid = {MOPAB014},
language = {english},
keywords = {polarization, resonance, dipole, proton, experiment},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB014},
url = {https://jacow.org/ipac2021/papers/mopab014.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB014},
abstract = {{In order to minimize the systematic errors for the Relativistic Heavy Ion Collider (RHIC) spin physics experiments, flipping the spin of each bunch of protons during the stores is needed. Experiments done with single RF magnet at energies less than 2 GeV have demonstrated a spin-flip efficiency over 99%. At high energy colliders with Siberian snakes, a single magnet spin flipper does not work because of the large spin tune spread and the generation of multiple, overlapping resonances. Over past decade, RHIC spin flipper design has evolved and a sophisticated spin flipper, constructed of nine-dipole magnets, was developed to flip the spin in RHIC. A special optics choice was also used to make the spin tune spread very small. In recent experiment, 97% spin-flip efficiency was measured at both 24 and 255 GeV for the first time. The results show that efficient spin flipping can be achieved at high energies.}},
}