Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 53: Instrumentation XIV

HK 53.2: Group Report

Thursday, March 17, 2016, 14:30–15:00, S1/01 A4

Developement of Closed Orbit Diagnostics towards EDM Measurements at COSY in Jülich — •Fabian Hinder for the JEDI collaboration — Forschungszentrum Jülich, Institut für Kernphysik IV — RWTH Aachen University, III. Physikalisches Institut B

Electric Dipole Moments (EDMs) violate parity and time reversal symmetries. Assuming the CPT-theorem, this leads to CP violation, which is needed to explain the matter over antimatter dominance in the Universe. Thus, a non-zero EDM is a hint to new physics beyond the Standard Model. The JEDI collaboration (Jülich Electric Dipole moment Investigations) has started investigations of a direct EDM measurement of protons and deuterons at a storage ring. To measure a tiny EDM signal with high precision, systematic effects have to be controlled to the same level. One major source of systematic uncertainties is a distortion of the closed orbit. To control and measure this effect, the orbit measurement system, including the readout electronics, the orbit correction system and the beam position monitor pick-ups are improved. All the mentioned developments are ongoing at the Cooler Synchrotron (COSY) at Jülich. The achievements in the mentioned fields will be presented at the conference.