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Technical Notes

 

HPCAT Technical Notes for the run of 2013-02

Canted undulator operation in 16ID
-  The spectroscopy 16ID-D has flexibility in selecting desired energies
    (4.5-35 keV) and/or in scanning incident beam energies;   
-   The diffraction 16ID-B has improved flux at sample position and a large
    energy range (14-42 keV).

16ID-D: HP X-ray Spectroscopy
Established HP spectroscopy 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)
- Partial Fluorescence Yield X-ray Absorption Spectroscopy (PFY-XAS)

EnergyRange 

 4.5-35 keV

Beam Size and  Focusing Optics 

 25 (V)x 50 (H) μm with 1 meter long KB mirrors
 5 (V)x 5 (H) μm with 200mm long KB mirrors
 or any combination above

Flux at Sample  Position 

 NRS: ~2x109ph/s at 14.4 keV, 2meV energy solution
 Others: ~4x1012ph/s at 10 keV
 flux based on using 1 meter long KB mirrors

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

16ID-B: HP Micro-X-ray Diffraction
This station is equipped with two experimental tables: laser heating table and general purpose table. The on-line laser heating table experiments will be in the first half of the run cycle; the general purpose table (e.g., using cryostat, resistive heating) will be in the second half. 

Energy Range 

 14-42 keV

Beam Size and  Focusing Optics 

 ~4x5 um2, 200 mm KB mirrors

Flux at Sample  Position 

 ~1011ph/s at 30 keV

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 

 MAR imaging plate, MAR CCD detectors, Pilatus 1M

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

16BM-D: HP Micro-X-ray Diffraction and absorption
Diffraction: Beamsize of 5(h)x12(v) microns at 7-40 keV for HP XRD; the energy could go up to 60 keV with special request.

X-ray absorption: XANES experiments may be measured inter-changeably together with XRD at each pressure point.

EnergyRange

 6-40 keV (normal), up to 60-70 keV (special request)

Beam Size and  Focusing Optics 

 5 μm (H) x 12 μm (V) FWHM
 200 mm Rh-coated Si KB-type mirror for horizontal
 focusing
 1 m Rh-coated multi-layer Si KB-type mirror for
 vertical focusing

Flux at Sample  Position 

 ~109photons/sec at 30keV

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 (APS detector pool)
 Pilatus 1M

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

16BM-B: White beam station
EDXD and radiography with a Paris-Edinburgh (PE) cell
White beam Laue technique with DAC
Beamsize can be 5x5 microns (focused) or 100-1000 microns (unfocused)

EnergyRange 

 White beam

Beam Size and  Focusing Optics 

 5 μm (H) x 5 μm (V) FWHM for focused beam with  
 200 mm Rh-coated Si KB-type mirror; 
 10 μm x 10 μm (slit-limited) to 1 mm x 1 mm for
 parallel beam (slit-limited)

Established  Techniques 

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

Detectors 

 MarCCD; Ge Solid State 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 for remote pressure controls,
  and membrane control systems
- 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 is newly available for loading environment sensitive samples