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Title: High energy resolution, high angular acceptance crystal monochromator

Abstract

A 4-bounce dispersive crystal monochromator reduces the bandpass of synchrotron radiation to a 10-50 meV range without sacrificing angular acceptance. The monochromator includes the combination of an asymmetrical channel-cut single crystal of lower order reflection and a symmetrical channel-cut single crystal of higher order reflection in a nested geometric configuration. In the disclosed embodiment, a highly asymmetrically cut ({alpha}=20) outer silicon crystal (4 2 2) with low order reflection is combined with a symmetrically cut inner silicon crystal (10 6 4) with high order reflection to condition a hard x-ray component (5--30 keV) of synchrotron radiation down to the {micro}eV-neV level. Each of the crystals is coupled to the combination of a positioning inchworm and angle encoder via a respective rotation stage for accurate relative positioning of the crystals and precise energy tuning of the monochromator. 7 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
OSTI Identifier:
242592
Patent Number(s):
5,524,040
Application Number:
PAN: 8-169,656; TRN: 96:013091
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 4 Jun 1996
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; MONOCHROMATORS; DESIGN; SYNCHROTRON RADIATION SOURCES; ACCELERATOR FACILITIES; MONOCRYSTALS

Citation Formats

Alp, E E, Mooney, T M, and Toellner, T. High energy resolution, high angular acceptance crystal monochromator. United States: N. p., 1996. Web.
Alp, E E, Mooney, T M, & Toellner, T. High energy resolution, high angular acceptance crystal monochromator. United States.
Alp, E E, Mooney, T M, and Toellner, T. Tue . "High energy resolution, high angular acceptance crystal monochromator". United States.
@article{osti_242592,
title = {High energy resolution, high angular acceptance crystal monochromator},
author = {Alp, E E and Mooney, T M and Toellner, T},
abstractNote = {A 4-bounce dispersive crystal monochromator reduces the bandpass of synchrotron radiation to a 10-50 meV range without sacrificing angular acceptance. The monochromator includes the combination of an asymmetrical channel-cut single crystal of lower order reflection and a symmetrical channel-cut single crystal of higher order reflection in a nested geometric configuration. In the disclosed embodiment, a highly asymmetrically cut ({alpha}=20) outer silicon crystal (4 2 2) with low order reflection is combined with a symmetrically cut inner silicon crystal (10 6 4) with high order reflection to condition a hard x-ray component (5--30 keV) of synchrotron radiation down to the {micro}eV-neV level. Each of the crystals is coupled to the combination of a positioning inchworm and angle encoder via a respective rotation stage for accurate relative positioning of the crystals and precise energy tuning of the monochromator. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {6}
}