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Optimization of the AGS superconducting helical partial snake strength [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
Brookhaven National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Two helical partial snakes, one super-conducting (a.k.a cold snake) and one normal conducting (a.k.a warm snake), have preserved the polarization of proton beam up to 65% in the Brookhaven Alternating Gradient Synchrotron (AGS) at the extraction energy from 85% at injection. In order to overcome spin resonances, stronger partial snakes would be required. However, the stronger the partial snake, the more the stable spin direction tilted producing a stronger horizontal intrinsic resonance. The balance between increasing the spin tune gap generated by the snakes and reducing the tilted stable spin direction has to be considered to maintain the polarization. Because the magnetic field of the warm snake has to be a constant, only the cold snake with a maximum 3T magnetic field can be varied to find out the optimum snake strength. This paper presents simulation results by spin tracking with different cold snake magnetic fields. Some experimental data are also analyzed.
Report Numbers
E 1.99:bnl--79915-2008-cp
bnl--79915-2008-cp
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Note
Published through SciTech Connect.
06/23/2008.
"bnl--79915-2008-cp"
"KB0202011"
EPAC 2008 - 11TH BIENNIAL EUROPEAN PARTICLE ACCELERATOR CONFERENCE; GENOA, ITALY; 20080623 through 20080627.
Huang, H.; Luccio, A.U.; Roser, T.; Lin,F.
Funding Information
DE-AC02-98CH10886
18031
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