Technical Notes

HPCAT Technical Totes for the Run-cycle 2017-3

16ID-D: HP X-ray Spectroscopy
 Established HP spectroscopy/scattering techniques at 16ID-D include:
Nuclear Resonant Inelastic X-ray Scattering (NRIXS)
Nuclear Forward Scattering (NFS)
Inelastic X-ray Scattering (IXS) or X-ray Raman Scattering (XRS)
Resonance/X-ray Emission Spectroscopy(R/XES)
(7-element analyzers have been newly commissioned and are available for user’s operation.) 

Energy Range 

 4.5-37 keV

Beam Size and  Focusing Optics 

  4 (V)x 6 (H) μm2 with 320mm-400mm long KB mirrors

On-sample Flux 

 NRS: ~2x109ph/s at 14.4 keV, 2meV DE

Others: ~4x1012ph/s at 10 keV

Detectors 

Vortex, Pilatus-100k, MAR CCD

 More descriptions may be found in http://hpcat.gl.carnegiescience.edu/beamlines/id-d

 

16ID-B: HP Micro-X-ray Diffraction
The station is equipped with two experimental tables:
the laser heating table and the general purpose table

Energy Range 

 14-60 keV

Beam Size and  Focusing Optics 

 ~3x5 um2, 320 mm KB mirrors
~1x2 um2, 100x200 mm2 KB mirrors

On-sample Flux 

 ~1x1012ph/s at 30 keV (3x5 um2)
~2x1011ph/s at 30 keV (1x2 um2)

Established  Techniques 

 Micro XRD angle-dispersive X-ray diffraction (powder
 and single crystal) with double-sided laser heating,
 external heating, room temperature, and cryogenic
 conditions

Detectors 

 Pilatus 1M-F, MAR CCD detectors, MAR-3450

More descriptions may be found in: http://hpcat.gl.carnegiescience.edu/beamlines/id-b

 

16BM-D: HP Micro-X-ray Diffraction and Absorption
Diffraction: micro-diffraction at 12-40 keV; the energy could go up to 60 keV on special request.
X-ray absorption: XANES experiments may be measured inter-changeably together with XRD at each pressure point.

Energy Range

 6-45 keV (normal), up to 60-70 keV (by special request)

Beam Size and  Focusing Optics 

 4 μm x 4 μm FWHM (E@30 keV)
 320 mm Pt-coated KB-type mirrors

Flux at Sample  Position 

 5x10^8 photons/sec at sample (E@30 keV)

Established  Techniques 

 Micro X-ray Diffraction
 X-ray Absorption Spectroscopy
 High-Resolution Powder X-ray Diffraction
 Single Crystal X-ray Diffraction

Detectors 

 MAR345 imaging plate (stationary)
 MARCCD (special request)
 Pilatus 1M-F (special request)
 Perkin-Elmer Detector

More descriptions may be found in: http://hpcat.gl.carnegiescience.edu/beamlines/bm-d

 

16BM-B: White Beam Station
Two experimental setups:
-         Energy dispersive x-ray diffraction and radiography with a Paris-Edinburgh (PE) press
-         White beam Laue technique with DAC

Energy Range 

 White beam

Beam Size and  Focusing Optics 

 2 μm (H) x 1 μm (V) FWHM for focused beam with  a pair of 100x200 mm2 KB mirrors; 
 50x50 μm2 to 1x1 mm2 for
 parallel beam (slit-collimation)

Established  Techniques 

 Multi-Angle Energy Dispersive X-ray Diffraction
 Micro White Beam Laue Diffraction
 White Beam Radiography

Detectors 

 Ge Solid State Detector, PE a-Si detector

More descriptions may be found in:
http://hpcat.gl.carnegiescience.edu/beamlines/bm-b

 

HPCAT Supporting Equipment:
- All stations are equipped with on-line ruby systems
- All stations equipped with gear-boxes and membrane (diaphragm) control systems for remote pressure controls
- Fast compression and decompression with piezo or diaphragm control devices
- One on-line Raman system available with special request
- One cryostat down to 4K, two cryostats (smaller) down to 10K
- Off-line ruby and Raman systems
- A sample preparation lab for DAC operation
- A glove box for loading environment sensitive samples, equipped with micromanipulators
- Special loading equipment for handling Be gasket
- A laser drill system for gasket hole drills and for micro-machining
- A micro-manipulator is available for sample preparation (training required)