title: Neutron resonance spin flippers: static coils manufactured by electrical discharge machining.
abstract: Radiofrequency spin flippers (RFSF) are key elements of Neutron Resonance Spin Echo (NRSE) spectrometers, which allow performing controlled manipulations of the beam polarization. We report on the design and test of a new type of RFSF which originality lies in the new manufacturing technique for the static coil. The largely automated procedure ensures reproducible construction as well as an excellent homogeneity of the neutron magnetic resonance condition over the coil volume. Two salient features of this concept are the large neutron window and the closure of the coil by a μ-metal yoke which prevents field leakage outside of the coil volume. These properties are essential for working with large beams and enable new applications with coils tilted with respect to the beam axis such as neutron Larmor diffraction or the study of dispersive excitations by inelastic NRSE.
authors.affiliation: Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Martin
authors.affiliation: Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
authors.forename: J N
authors.initials: JN
authors.lastname: Wagner
authors.affiliation: Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Dogu
authors.affiliation: Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Fuchs
authors.affiliation: Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Kredler
authors.affiliation: Physik-Department E21, Technische Universität München, 85748 Garching, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Böni
authors.affiliation: Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Häußler