Technical Notes

HPCAT Technical Notes for the Run-cycle 2018-1

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)

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: ~1x109ph/s at 14.4 keV, 2meV DE

   Others: ~2x1012ph/s at 10 keV

Detectors 

  AmpTek, Avalanche Photo Diode (APD) Pilatus-100k, MAR CCD

 More information may be found at 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 

  18 -60 keV

Beam Size and  Focusing Optics 

  ~3x6 um2, 320x320 mm KB mirror assembly
  ~1x2 um2, 200x100 mm KB mirror assembly

On-sample Flux 

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

Established  Techniques 

  Angle-dispersive micro x-ray diffraction (powder
  and single crystal) with double-sided laser heating,
  external heating, ambient temperature, and cryogenic cooling in  
  static and time-resolved modes

Detectors 

  Pilatus 1M-F, MAR CCD (MAR-345, PE and others, by request)

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

 

16BM-D: HP Micro-X-ray Diffraction, Absorption and Tomography
Diffraction: micro-diffraction at 6-45 keV; the energy could go up to 70 keV on special request.
X-ray absorption: XAS experiments may be measured inter-changeably together with XRD at each pressure point.
X-ray Tomography: E = 20 – 30 keV, Field of view < 0.5 mm x 0.5 mm, Image resolution: 1.3 – 2.0 µm.
                                     The sample must be loaded in a DAC with Be gasket in radial transmission geometry.
                                     No high-temperature , no cryogenic application yet

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
X-ray Transmission Computed Tomography

Detectors 

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

More information may be found at: 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
 For Laue: 7-100 keV for focused beam
 For PEC: 20-65 keV for focused beam; 20-120 keV for parallel Beam

Beam Size and  Focusing Optics 

For Laue: 2.3 µm (H) x 2.3 µm (V) FWHM with 100+200 mm KB mirror
For PEC: 10 µm (H) x 10 µm (V) FWHM with 200+200 mm KB mirror
50 µm x 50 µm to 1.5 mm x 1.5 mm for parallel beam (slit)

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,
 Amptek CdTe Energy dispersive detector (on request)

More information may be found at: 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 single- and double-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)