Conceptual design of the spin rotator for the SuperKEKB High Energy Ring

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dc.contributor.author Peng, Yuhao
dc.date.accessioned 2022-01-04T23:42:53Z
dc.date.available 2022-01-04T23:42:53Z
dc.date.copyright 2021 en_US
dc.date.issued 2022-01-04
dc.identifier.uri http://hdl.handle.net/1828/13660
dc.description.abstract This project focuses on the conceptual design of the spin rotator for a proposed electron polarization upgrade of the SuperKEKB. The goal is to achieve the longitudinal electron polarization at the interaction point (IP). In this design, four existing dipoles will be replaced with four rotator magnets on both sides of the IP. The rotator magnet structure consists of dipole-solenoid combined function magnets with skew-quadrupoles installed on top to decouple the x-y plane. The advantage of this design is that the original machine geometry is maintained, and the original machine can be recovered by turning off the solenoid-quadrupole in the rotator magnet. With Bmad, a powerful lattice simulation tool applied to perform the optimizations for this design, the longitudinal spin alignment at the IP reaches a significantly high level, greater than 99.99%. Furthermore, the influence of the installation of the spin rotator on the original machine dynamics is minimized to an acceptable level. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject Electron Polarization en_US
dc.subject Spin Rotator en_US
dc.subject SuperKEKB en_US
dc.subject L-Rot en_US
dc.subject R-Rot en_US
dc.title Conceptual design of the spin rotator for the SuperKEKB High Energy Ring en_US
dc.type Thesis en_US
dc.contributor.supervisor Roney, J. Michael
dc.degree.department Department of Physics and Astronomy en_US
dc.degree.level Master of Science M.Sc. en_US
dc.description.scholarlevel Graduate en_US

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