Synchrotron radiation trapezoid vertical focus lens design method by combining gravity bending coordinating and minimum image disk widening

Abstract

The invention discloses a synchrotron radiation trapezoid vertical focus lens design method by combining gravity bending coordinating and the minimum image disk widening. The method comprises the following steps of: establishing a gravity-containing differential equation with which the bending reflection accords according to the beam bending theory of material mechanics; establishing an image disk widening function caused by the lens shape error of the focus lens; and calculating a design parameter which makes the image disk widening function acquire the minimum value. By the method, the gravity surface shape error is eliminated, surface shape slope error and image disk widening are greatly reduced, and the surface shape slope error and the image disk widening of the design of combining gravity bending coordinating and the minimum image disk widening bending are greatly reduced on the basis of the gravity bending coordinating design.

Description

technical field [0001] The invention relates to a focusing mirror design method, in particular to a synchrotron radiation trapezoidal vertical focusing mirror gravity co-bending combined minimum image spread design method which can eliminate self-gravity surface shape errors, and belongs to the technical fields of synchrotron radiation beamline engineering and synchrotron radiation optics. Background technique [0002] One of the advantages of synchrotron radiation is its high brightness. Brightness generally refers to the photon number density in the phase space. The high photon flux of synchrotron radiation and the small volume of the phase space create the characteristics of high brightness. According to Liu Wei's theorem, the brightness cannot be increased without sacrificing the photon flux. When the line width of a beam is compressed, its angular width increases; conversely, when the angular width is compressed so that the beam becomes more collimated, its line width ...

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Problems solved by technology

[0029] The purpose of the present invention is to provide a synchrotron radiation trapezoidal vertical focusing mirror gravity co-bending combined with the minimum image span design method to solve the problem of passive processing of gravity in the prior art, which is difficult to better eliminate the gravity surface error, and does not realize the trapezoidal mirror The problem of minimization of focal spot broadening

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