학술논문
Effect of various errors on the Spin Tune and Stable Spin Axis
Document Type
Conference
Author
Source
Conference: SPIN 2008 - The 18th International Symposium on Spin Physics; Charlottesville, Virginia; 20081006 through 20081011
Subject
Language
English
Abstract
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.