P61B is specialized in X-ray diffraction and radiography experiments at elevated pressures and temperatures on solids and liquids using high-energy x-rays.
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I. General specifications
- Beamline technical design report by Dr. Nishiyama & Mr. Sonntag (2015):
TDR2015- Progress and future developments at P61B LVP by Dr. Robert Farla (2017-2019):
Tenure report (2019)- Beamline calculations:
Whitebeam characteristics- Full beamline layout incl. P61A (click for larger view):
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Techniques available
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X-ray diffraction and radiography
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Photon source
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10 wigglers
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Max. source flux
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1012 ph/s/0.1% b.w. (at 50 keV, 100mA, aperture 1 x 1 mm2 at 133 m from source)
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Energy range
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30 - 200 keV
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Filters
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Minimum: 300 micron CVD-diamond + 50 micron Cu
Maximum: 900 micron CVD-diamond + 150 micron Cu |
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Max. flux on SAMPLE
(assuming B-epoxy pressure medium and pre-gaskets, hBN sleeve, graphite furnace, attenuation thru air, and 2 frontend filters: 300 um CVD-dia, 50 um Cu)
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4x1011 ph/s/0.1% b.w. at 50 keV (calculated)
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Spot size ON SAMPLE
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max. 1.5 x 1.5 mm2
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Sample type
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encapsulated solid (powder or pre-sintered sample)
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II. Detectors
2 high purity Ge-detectors with collimator-slit system
Detector configuration
Minimum horizontal range: ±5° (one at min. -5° and one at min. +5°)
Maximum horizontal range: ±10° (one at max. -10° and one at max. +10°)
Vertical angular range: 0° to 27° (only for 1 detector)
Simultaneous horizontal and vertical positioning at > 5° for both detectors
III. Radiography camera
Fast sCMOS camera on a white beam X-ray microscope with 10x and 20x objectives, using LaAG:Ce and GGG:Eu scintillators (20 um thickness).
IV. Large volume press specifications
The LVP
-- 6 independently-controlled rams with laser positioning accuracy of 0.1 micron-- 15 MN maximum load (5 MN per pair of rams)
-- Primary anvils of hardened tool steel (60 mm truncation)
-- 5-axis stage (X, Y1, Z, for translation, phiZ for rotation/oscillation, Y2 for phiZ alignment to the beam)
Different modes of compression
-- 6-8 'Kawai' compression geometry using eight 32 mm or 27 mm cubic WC anvils
-- 6-6 'cubic' compression geometry using six cylindrical WC anvils
High-pressure deformation in 6-6 geometry
-- Axisymmetric triaxial testing
-- 'True' triaxial testing (operating 2 pairs of independently moving rams)
-- Deformation in compression and in tension
Sample environment
-- 300 K - 2400 K (DC-heating with 10 kW power supply)
-- 1 GPa - 24 GPa (development ongoing to reach even higher pressures)
-- Short (0.5-2 h) and long-duration (2-8 h) experiments
