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RIS citation export for MOPTS011: Spin Motion Perturbation Effect on the EDM Statistic in the Frequency Domain Method

AU  - Aksentyev, A.E.
AU  - Senichev, V.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Spin Motion Perturbation Effect on the EDM Statistic in the Frequency Domain Method
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The spin precession axis of a particle involved in betatron motion precesses about the invariant spin axis defined on the closed orbit (CO). This precession can be observed in polarization data as a rapid, small-amplitude oscillation on top of the major effect oscillation caused by the precession of spin about the CO axis. The frequency of this latter oscillation is used in the Frequency Domain (FD) methodology as the EDM observable. [*] It is estimated by fitting polarimetry data by a sine function; the rapid oscillations, therefore, constitute a model specification error. This model error might introduce a bias into the frequency estimate. In the present work we investigate the effect of the spin precession axis motion on measurement data and fit quality, and conclude that it is not only insignificant (with regard to data perturbation) compared to spin tune variation, but is also controllable via the application of a Spin Wheel.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 861
EP  - 863
KW  - betatron
KW  - polarization
KW  - dipole
KW  - storage-ring
KW  - lattice
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPTS011
UR  - http://jacow.org/ipac2019/papers/mopts011.pdf
ER  -