Book/Proceedings

FZJ-2023-04359

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimization of spin-coherence time for electric dipole moment measurements

Shankar, R. (Corresponding author) ; Lenisa, P. ; Lehrach, A.FZJ*

2023
Sissa Medialab Trieste, Italy

This record in other databases:

Please use a persistent id in citations: doi:10.22323/1.433.0024  doi:10.34734/FZJ-2023-04359

Abstract: The JEDI experiment is dedicated to the search for the electric dipole moment (EDM) of charged particles using storage rings, which can be a very sensitive probe of physics beyond the Standard Model. In order to reach the highest possible sensitivity, a fundamental parameter to be optimized is the Spin Coherence Time (SCT), i.e., the time interval within which the particles of the stored beam maintain a net polarization greater than 1/e. To identify the working conditions that maximize SCT, accurate spin-dynamics simulations with the code BMAD have been performed on the lattice of a "prototype" storage ring which uses a combination of electric and magnetic fields for bending. This contribution will present an analysis of the mechanisms behind the decoherence, some techniques to maximize SCT through the optimization of second-order focusing parameters, and the exclusive beam and spin dynamics effects of the electric component of bending fields.

Keyword(s): Basic research (1st) ; Particle Physics (2nd)

---

Contributing Institute(s):

1. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

1. Jülich Electric Dipole moment Investigations

Appears in the scientific report 2023

---

Database coverage:
;

---