A beamline for high-pressure studies at the Advanced Light Source with a superconducting bending magnet as the source.
A new facility for high-pressure diffraction and spectroscopy using diamond anvil high-pressure cells has been built at the Advanced Light Source on beamline 12.2.2. This beamline benefits from the hard X-radiation generated by a 6 T superconducting bending magnet (superbend). Useful X-ray flux is available between 5 keV and 35 keV. The radiation is transferred from the superbend to the experimental enclosure by the brightness-preserving optics of the beamline. These optics are comprised of a plane parabola collimating mirror, followed by a Kohzu monochromator vessel with Si(111) crystals (E/DeltaE approximately equal 7000) and W/B4C multilayers (E/DeltaE approximately equal 100), and then a toroidal focusing mirror with variable focusing distance. The experimental enclosure contains an automated beam-positioning system, a set of slits, ion chambers, the sample positioning goniometry and area detector (CCD or image-plate detector). Future developments aim at the installation of a second endstation dedicated to in situ laser heating and a dedicated high-pressure single-crystal station, applying both monochromatic and polychromatic techniques.
Kunz
Martin
M
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA. mkunz@lbl.gov
MacDowell
Alastair A
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Caldwell
Wendel A
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Cambie
Daniella
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Celestre
Richard S
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Domning
Edward E
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Duarte
Robert M
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Gleason
Arianna E
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Glossinger
James M
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Kelez
Nicholas
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Plate
David W
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Yu
Tony
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Zaug
Joeseph M
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Padmore
Howard A
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Jeanloz
Raymond
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Alivisatos
A Paul
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Clark
Simon M
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