18-22 October 2021
Matsue, Shimane Prefecture, Japan
Asia/Tokyo timezone

Orbit Response Matrix Analysis for COSY - Model Optimization using LOCO

18 Oct 2021, 21:20
Room 305-306 (Kunibiki Messe)

Room 305-306

Kunibiki Messe

Poster Presentation Acceleration, Storage and Polarimetry of polarized Beams Acceleration, Storage and Polarimetry of polarized Beams


Max Vitz (RWTH Aachen, Forschungszentrum Jülich)


The matter-antimatter asymmetry might be understood by investigating the EDM (Electric Dipole Moment) of elementary particles. A permanent EDM of a subatomic particle violates time reversal and parity symmetry at the same time and a discovery of a non-zero EDM would be a strong indication for physics beyond the Standard Model.

The JEDI-Collaboration (Jülich Electric Dipole moment Investigations) in Jülich has performed a direct EDM measurement for deuterons with the so called precurser experiments at the storage ring COSY (COoler SYnchrotron).

In order to understand the measured data and to disentangle an EDM signal from systematic effects, spin tracking simulations in an accurate simulation model of COSY are needed. Such an accurate model can be achieved by measuring the ORM (Orbit Response Matrix) of COSY and fitting the model ORM against the measured ORM using the LOCO (Linear Optics from Closed Orbit) technique. Therefore, the LOCO algorithm as well as a simulation model of COSY with all knowledge of COSY available has been implemented into the software library Bmad. First results
of the lattice optimization and the spin tracking simulations will be discussed.

Primary author

Max Vitz (RWTH Aachen, Forschungszentrum Jülich)

Presentation Materials