Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 117: Beschleunigerphysik IV (Polarisation)
T 117.5: Vortrag
Montag, 4. März 2013, 17:45–18:00, WIL-C203
Simulation of spin dynamics to measure Electric Dipole Moments in storage rings — •Marcel Rosenthal and Andreas Lehrach — Institut für Kernphysik, Forschungszentrum Jülich, Germany
CP violation in the baryon sector, which is predicted by the Standard Model of Particle Physics, is too small to explain the matter and antimatter asymmetry in our universe. Permanent Electric Dipole Moments (EDMs) violate both P and T symmetries and are therefore, through the CPT theorem, also CP violating. No direct EDM measurements for protons, deuterons and light nuclei have been performed up to now.
The JEDI collaboration at Forschungszentrum Jülich (FZJ) and the BNL-EDM collaboration at Brookhaven National Laboratory (BNL) pursue the goal to measure the EDMs of these particles in dedicated storage rings. Therefore different approaches are studied to reach an ultimate sensitivity of 10−29 e·cm. A first direct measurement of the proton and deuteron EDM at a sensitivity level of 10−24 e·cm will be performed in the existing conventional storage ring at FZJ, the Cooler Synchrotron COSY.
Particle tracking simulations to explore the motion-correlated spin dynamics are a crucial part of feasibility studies of the planned storage ring EDM experiments. In a first step, a benchmarking of simulation codes with measurements at the Cooler Synchrotron COSY is performed.