Entwicklung externer und interner Magnetfelder für ein EDM Experiment

• Applicant: Professor Dr. Peter Fierlinger
• Subject Area: Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
• Term: from 2010 to 2015
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 174294956

The installation of a new generation of sources for ultracold neutrons (UCN) permits to improve the limits on one of the basic experiments in particle physics, the measurement of the electric dipole moment of the neutron dn [1] (EDM), by two Orders of magnitude to dn < 5 • 10~28 e-, because of increased particle density. Since current experiments are limited not only by statistics but also by systematic errors, new experiments have to be prepared by corresponding studies. It is known [3] that magnetic field based systematic effects play a central role while planning a new experiment. In this project we plan to realize a stable magnetic environment and to accomplish pre-studies that decisively guide the design of a large passive shielding.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1491: Precision Experiments in Particle- and Astrophysics with Cold and Ultracold Neutrons
• Major Instrumentation: External coil system with stable current sources ; Fluxgate based monitoring & control system for external coils
• Instrumentation Group: 0110 Hochstabile Magnete (mit homogenem oder speziellem Feldverlauf) ; 0160 Stromversorgungs- und Steuergeräte für Magnete: Zubehör