Open AccessTunable side‐bounce monochromator
Author(s) -
Hong Hawoong,
Tischler Jonathan,
Shi Xianbo,
Highland Matthew
Publication year - 2021
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577520014940
Subject(s) - monochromator , optics , ray tracing (physics) , polarization (electrochemistry) , rotation (mathematics) , offset (computer science) , physics , computer science , geometry , chemistry , mathematics , wavelength , programming language
Side‐bounce beamlines with fixed‐exit angles have been intended to operate with only one selected energy. However, a tunable monochromator in a new geometry is presented here that will make side‐bounce beamlines energy tunable. It requires the addition of two more rotations. Analytic solutions for the values of these two rotation angles are provided. The validity of the new concept was checked by ray tracing and two‐dimensional searches in the additional angles. Operational details on the new scheme, including the exit offset and steering of the beams, were determined. In addition to tunability, the new monochromator will reduce the loss from the polarization factor at low energies.