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@INPROCEEDINGS{Vitz:1034954,
author = {Vitz, Maximilian and Lehrach, Andreas and Pretz, Jörg},
title = {{D}etermination of the {I}nvariant {S}pin {A}xis in a
{COSY} model using {B}mad},
volume = {2687},
number = {5},
issn = {1742-6588},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2025-00066},
series = {Journal of physics / Conference Series},
pages = {052024 -},
year = {2024},
abstract = {The matter-antimatter asymmetry might be understood by
investigating the EDM (ElectricDipole Moment) of elementary
particles. A permanent EDM of a subatomic particle
violatestime reversal and parity symmetry at the same time
and would be, with the currently achievableexperimental
accuracy, an indication for further CP violation than
established in the SM(Standard Model of Particle Physics).
The JEDI-Collaboration (J¨ulich Electric Dipole
momentInvestigations) in J¨ulich has performed a direct EDM
measurement for deuterons with the so-called precursor
experiments at the storage ring COSY (COoler SYnchrotron) by
measuringthe orientation of the ISA (Invariant Spin Axis).
In order to interpret the measured data andto disentangle a
potential EDM signal from systematic effects, spin tracking
simulations in anaccurate simulation model of COSY are
needed. Therefore a model of COSY was implementedusing the
software library Bmad. Systematic effects were considered by
including elementmisalignments, effective dipole shortening,
longitudinal fields and steerer kicks. These effectsrotate
the ISA in addition to the EDM and have to be analyzed and
understood. The mostrecent spin tracking results as well as
the methods to find the ISA are presented in this paper.},
month = {May},
date = {2023-05-07},
organization = {14th International Particle
Accelerator Conference, Venice (Italy),
7 May 2023 - 12 May 2023},
cin = {IKP-4 / IKP-2},
ddc = {530},
cid = {I:(DE-Juel1)IKP-4-20111104 / I:(DE-Juel1)IKP-2-20111104},
pnm = {621 - Accelerator Research and Development (POF4-621)},
pid = {G:(DE-HGF)POF4-621},
experiment = {EXP:(DE-MLZ)EDM-20140101},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
UT = {WOS:001250460600118},
doi = {10.1088/1742-6596/2687/5/052024},
url = {https://juser.fz-juelich.de/record/1034954},
}