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Spin-flipping a stored polarized proton beam with an rf dipole.
- Source :
- AIP Conference Proceedings; 2000, Vol. 549 Issue 1, p662, 4p
- Publication Year :
- 2000
-
Abstract
- Frequent polarization reversals, or spin-flips, of a stored polarized highenergy beam may greatly reduce systcmatic errors of spin asymmetry measurements in a scattering asymmetry experiment. We studied the spin-flipping of a 120 MeV horizontally-polarized proton beam stored in the IUCF Cooler Ring by ramping an rfdipole magnet's frequency through an rf-induced depolarizing resonance in the presence of a nearly-full Siberian snake. After optimizing the frequency ramp parameters, we used multiple spin-flips to measure a spin-flip efficiency of 86.5±0.5%. The spin-flip efficiency was apparently limited by the rf-dipole's field strength. This result indicates that an efficient spin-flipping a stored polarized beam should be possible in high energy rings such as RHIC and HERA where Siberian snakes are certainly needed and only dipole rf-flipper-magnets are practical. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLARIZED beams (Nuclear physics)
PROTON beams
Subjects
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 549
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 5663759