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Title: Inclined monochromator for high heat-load synchrotron x-ray radiation

A double crystal monochromator is described including two identical, parallel crystals, each of which is cut such that the normal to the diffraction planes of interest makes an angle less than 90 degrees with the surface normal. Diffraction is symmetric, regardless of whether the crystals are symmetrically or asymmetrically cut, enabling operation of the monochromator with a fixed plane of diffraction. As a result of the inclination of the crystal surface, an incident beam has a footprint area which is elongated both vertically and horizontally when compared to that of the conventional monochromator, reducing the heat flux of the incident beam and enabling more efficient surface cooling. Because after inclination of the crystal only a fraction of thermal distortion lies in the diffraction plane, slope errors and the resultant misorientation of the diffracted beam are reduced. 11 figures.
Inventors:
Issue Date:
OSTI Identifier:
5253919
Assignee:
Dept. of Energy, Washington, DC () PTO; EDB-94-065080
Patent Number(s):
US 5287395; A
Application Number:
PPN: US 7-909323
Contract Number:
W-31109-ENG-38
Resource Relation:
Patent File Date: 6 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; MONOCHROMATORS; DESIGN; ACCELERATOR FACILITIES; SYNCHROTRON RADIATION SOURCES; X RADIATION; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; RADIATION SOURCES; RADIATIONS; 430303* - Particle Accelerators- Experimental Facilities & Equipment