TY  - CONF
AU  - Lehrach, Andreas
AU  - Lenisa, Paolo
TI  - Optimization of spin-coherence time for electric dipole moment measurements
VL  - SPIN 2023
PB  - Proceedings of Science
M1  - FZJ-2025-00067
T2  - PoS
SP  - 092
PY  - 2023
AB  - Electric dipole moments are very sensitive probes of physics beyond the Standard Model. TheJEDI collaboration is dedicated to the search for the electric dipole moment (EDM) of chargedparticles making use of polarized beams in a storage ring. In order to reach the highest possiblesensitivity, a fundamental parameter to be optimized is the Spin Coherence Time (SCT), i.e., thetime interval within which the particles of the stored beam maintain a net polarization greater than1/e. To identify the working conditions that maximize SCT, accurate spin-dynamics simulationshave been performed using BMAD. In this study, lattices of a "prototype" storage ring, which usescombined electric and magnetic fields for bending, and a "hybrid" storage ring using only electricbending fields with magnets for focusing, are investigated. This paper presents a model of spinbehaviour in frozen-spin lattices that models spin tune with reasonable accuracy in both situations,as well as a technique to optimize the second-order beam optics for maximum SCT at any givenworking point.
T2  - 25th International Spin Symposium
CY  - 24 Sep 2023 - 29 Sep 2023, Durham (NC, USA)
Y2  - 24 Sep 2023 - 29 Sep 2023
M2  - Durham, NC, USA
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
UR  - https://juser.fz-juelich.de/record/1034955
ER  -