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A compact, large-diameter adiabatic spinflipper for ultracold neutrons

Abstract : We report the design and test of a compact, large-diameter spinflipper for ultracold neutrons based on the principle of adiabatic spinflip. A solenoid rf coil with a high diameter-to-length ratio (d/l~1.7) is surrounded by up to three short magnet coils (d/l~0.4...1.7) to provide the static gradient field. The device is optimized for low power consumption and operation in high vacuum. The magnetic field conditions necessary for full spinflipper efficiency over the full diameter were evaluated with ultracold neutrons. The measured spinflipper efficiency vs. adiabaticity correlation is in good agreement with a calculation based on an ideally linear gradient.
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http://hal.in2p3.fr/in2p3-00410915
Contributeur : Sandrine Guesnon <>
Soumis le : mardi 25 août 2009 - 11:17:36
Dernière modification le : mardi 19 février 2019 - 10:04:05

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P. Geltenbort, L. Goltl, R. Henneck, K. Kirch, A. Knecht, et al.. A compact, large-diameter adiabatic spinflipper for ultracold neutrons. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2009, 608, pp.132-138. ⟨10.1016/j.nima.2009.06.038⟩. ⟨in2p3-00410915⟩

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