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):
- 5524040
- 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}
}