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Title: Neutron resonance spin flippers: Static coils manufactured by electrical discharge machining

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:
; ;  [1] ;  [2] ;  [3] ; ;  [1] ;  [4]
  1. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching (Germany)
  2. (Germany)
  3. Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
  4. Physik-Department E21, Technische Universität München, 85748 Garching (Germany)
Publication Date:
OSTI Identifier:
22308830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DIFFRACTION; ELECTRIC DISCHARGES; EXCITATION; MACHINING; MAGNET COILS; MAGNETIC RESONANCE; NEUTRONS; POLARIZATION; RADIOWAVE RADIATION; SPECTROMETERS; SPIN ECHO