Open AccessThe role of single element errors in planar parabolic compound refractive lenses
Author(s) -
Andrejczuk Andrzej,
Krzywiński Jacek,
Sakurai Yoshiharu,
Itou Masayoshi
Publication year - 2010
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/s0909049510022454
Subject(s) - optics , lens (geology) , physics , planar , monte carlo method , transverse plane , x ray optics , resolution (logic) , gradient index optics , photon , materials science , refractive index , x ray , mathematics , statistics , computer graphics (images) , structural engineering , artificial intelligence , computer science , engineering
The propagation of X‐rays through a compound refractive lens (CRL) with imperfect CRL elements is investigated. The trajectories of random rays within the geometrical optics regime are calculated in one plane using Monte Carlo methods. Three different lenses were simulated: Be, Al and Ni lenses designed for photon energies of 20 keV, 60 keV and 175 keV, respectively. The results show that while transverse displacements of single elements in a CRL do not influence imaging resolution, rotational errors can be important. Systematic calculations of aberrations owing to the deviation of the element's surface from a perfect parabolic shape are also presented.