Spin flipping a stored polarized proton beam with an rf magnetic field

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Bulletin of the American Physical Society

OSTI ID:374730

Hu, S Q; Blinov, B B; Caussyn, D D ^[1]

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1. and others

The authors studied the spin flipping of a vertically polarized, stored 139 MeV proton beam with an rf solenoid magnetic field. By sweeping the rf frequency through an rf depolarizing resonance, they made the spin flip. The spin flipping was more efficient for slower ramp times, and the spin flip efficiency peaked at some optimum ramp time that is not yet fully understood. Since frequent spin flipping could significantly reduce the systematic errors in scattering experiments using a stored polarized beam, it is very important to minimize the depolarization after each spin flip. In this experiment, with multiple spin flips, the authors found a polarization loss of 0.0000{sup {+-}}0.0005 per spin flip under the best conditions; this loss increased significantly for small changes in the conditions.

• OSTI ID: 374730
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 40; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
POLARIZATION
PROTON BEAMS
RF SYSTEMS
SPIN FLIP
STORAGE RINGS