Figure 3
(a) The experimental setup for Larmor diffraction on the HB-1 polarized triple-axis spectrometer (PTAX) at HFIR, shown in transmission geometry for better clarity. Neutrons travel from right to left. (b) A drawing of the nutator used in panel (a), which can create a magnetic field in any direction in the two-dimensional plane perpendicular to the beam. The space between the exit of the monochromator drum and the entrance of the analyser drum is ∼130 cm and cannot be changed. |