Effect of Various Errors on the Spin Tune and Stable Spin Axis

Journal Article · Mon Aug 03 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215756· OSTI ID:21344442

MacKay, W W ^[1]

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1. Brookhaven National Laboratory, Upton, NY 11973 (United States)

Even though RHIC has two full Siberian snakes in each ring, there are various perturbations to the ideal case including orbit errors at the snakes, experiment solenoids, injection bumps, and interlaced horizontal-vertical bumps at the hydrogen jet polarimeter. These errors can cause depolarization by shifting the spin tune and tilting the stable spin direction away from vertical. Tilting of the stable spin axis can enhance horizontal depolarizing resonances. This paper presents preliminary results for some of these error scenarios, as well as their impact on the stable spin directions at STAR and PHENIX.

• OSTI ID: 21344442
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: SPIN 2008: 18. International Spin Physics Symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215756; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BENDING MAGNETS
BEAM MONITORING
BROOKHAVEN RHIC
DEPOLARIZATION
DISTURBANCES
ERRORS
ION SOURCES
JETS
LINEAR ACCELERATORS
MAGNETIC FIELD CONFIGURATIONS
ORBITS
POLARIMETERS
POLARIZATION
POLARIZED BEAMS
RESONANCE
SOLENOIDS
SPIN
ACCELERATORS
ANGULAR MOMENTUM
BEAMS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
HEAVY ION ACCELERATORS
MAGNETS
MONITORING
PARTICLE PROPERTIES
STORAGE RINGS