A long cylindrical mirror bent into a toroidal shape in a special mechanism is usually used to focus the synchrotron radiations in both horizontal and vertical directions of X-ray beamline. The imaging principle and structural parameters of a XRDX beamline toroidal focusing mirror for NSRL use are discussed
the effect of aberrations and slope errors on the imaging quality is analyzed
the variation of curvature in meridional direction due to mirror bending
the error for theoretical value
and the thermal distortion resulting from the incident beam are discussed in detail. The actual measurements made with Marcam CCD camera showed that the theoretical calculations are in very good agreement with the actual measurements.
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references
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