학술논문
Acceleration of Polarized Protons in the AGS With Two Helical Partial Snakes
Document Type
Conference
Author
Source
Proceedings of the 2005 Particle Accelerator Conference Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the. :1404-1406 2005
Subject
Language
ISSN
1944-4680
2152-9582
2152-9582
Abstract
The RHIC spin program requires 2×10 11 proton/bunch with 70% polarization. As the injector to RHIC, AGS is the bottleneck for preserving polarization: there is no space for a full snake to overcome numerous depolarizing resonances. An ac dipole and a partial snake have been used to preserve beam polarization in the past few years. Two helical snakes have been built and installed in the AGS. With careful setup of optics at injection and along the ramp, this combination can eliminate all depolarizing resonances encountered during acceleration. This paper presents the setup and preliminary results.