Open AccessDesign and construction of multicrystal analyser detectors using Rowland circles: application to MAD26 at ALBA
Author(s) -
Peral Inma,
McKinlay Jonathan,
Knapp Michael,
Ferrer Salvador
Publication year - 2011
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/s0909049511031529
Subject(s) - analyser , detector , synchrotron , energy (signal processing) , diffraction , optics , range (aeronautics) , beam (structure) , physics , process (computing) , computer science , nuclear physics , materials science , quantum mechanics , composite material , operating system
A concept is given for describing multicrystal analyser detectors (MADs), as they are in use for synchrotron powder diffraction, on the basis of the Rowland circle construction. The Rowland circle is typically used to describe focusing geometries and can be adapted for the case of MADs working at a single energy as well as in a limited energy range. With this construction it is also possible to quantify and optimize the walk of the beam along non‐central crystals which is inevitable in certain detector designs. The results of this geometrical inspection are correlated with a real detector design that is implemented at the ALBA synchrotron facility in Spain. An error budget is given to estimate the influence and amount of tolerance of the manufacturing process.