Author/Authors :
Geltenbort، نويسنده , , P. and G?ltl، نويسنده , , L. and Henneck، نويسنده , , R. and Kirch، نويسنده , , K. and Knecht، نويسنده , , A. and Kuzniak، نويسنده , , M. and Lauss، نويسنده , , B. and Lefort، نويسنده , , T. and Mtchedlishvili، نويسنده , , A. and Meier، نويسنده , , M. and Negrazus، نويسنده , , M. and Petzoldt، نويسنده , , G. and Ruettimann، نويسنده , , P. and Vrankovic، نويسنده , , V. and Zsigmond، نويسنده , , G.، نويسنده ,
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.
