Conference Paper

Dynamic aperture evaluation at the current working point for RHIC polarized proton operation

Brookhaven Nat. Lab., Upton
DOI: 10.1109/PAC.2007.4440104 Conference: Particle Accelerator Conference, 2007. PAC. IEEE
Source: IEEE Xplore

ABSTRACT With the updated multipole magnet field errors in the interaction regions (IRs), detailed dynamic aperture studies are carried out around the current RHIC polarized proton (pp) working point. The beam parameters and beta*s are similar to those proposed for the next pp run. The effects on the dynamic apertures from nonlinear corrections, such as multipole field error correction in the IRs, second order chromaticity correction and horizontal third order resonance correction are evaluated. The sextupole components in the arc dipoles and the observed tune ripples are also considered.

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