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XRD1 Specifications
This page is a list of all the important parameters of the beamline and an indication of all the available instrumentation.
In case more details are needed you can contact directly the beamline scientists.
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X-rays at sample
Energy range |
4-21.5 keV |
Photon Flux |
1012-1013 ph/sec |
Beam Size at sample |
0.7 x 0.2 mm2 FWHM (unconstricted; precision slits for beam shaping) |
Angular divergence |
2.3 mrad x 0.3 mrad FWHM |
Source
Type |
Insertion Device: NdBFe Multipole Wiggler (Hybrid linear) |
Section |
5.2 |
Gap |
22 mm |
Poles |
57 |
Period |
140 mm |
N. of periods |
3 x 9.5 |
B0 |
1.607 T |
Ec |
4.27 keV |
K |
21 |
Source Size FWHM |
2.0 x 0.37mm |
Power (9mrad) |
8.2 kW |
Optics
Collimating Mirror
|
Cilindrical Mirror with 50 nm Pt-coating
Radius (calculated) = 14.8 km
Distance from source = 21873 mm
Incidence angle = 3 mrad
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Monochromator
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Fixed exit Double Crystal Si111 with LN2 cloosed loop cooling
Distance from source = 24059 mm
Energy range = 4-21 keV
Energy resolution = 10-4 for routine experiments and MAD experiments
Fine tuning with piezo actuator; feedback from 4-quadrant ion chamber |
Focusing mirror |
Toridal Mirros with 50 nm Pt-coating
Tangential radius = 9.31 km
Sagittal radius = 55.27 mm
Distance from source = 28018 mm
Incidence angle = 3 mrad |
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Main Setup
Gonimeter Type |
Huber Kappa Goniometer |
Circle Axis |
Omega - Kappa - Phi - 2Theta (for detector)
Two rotational stages assembled together in a 60° kappa geometry.
A further circle rotates the Kappa unit around a horizontal axis.
|
Linear Axis |
XYZ-stage on top of Phi for the fine adjustment of the sample |
Sphere of Confusion |
20 µm |
Standard Configurations |
Left (Kappa = 0) for data collection
Top (Kappa = -109.471 Omega = -125.264) for sample mounting
Bottom (Kappa = 109.471 Omega = 54.736) for grazing incidence experiments
Triclinic (Kappa=-30 Omega=54.736) for merging with Left to get completeness on triclinic crystal systems |
Alignment Base |
5 axis Optical Table for alignment of the Goniometer with Beam with feedback from 4-quadrants Beam Position Monitor (Alibava) |
Notes |
XYZ-stage with standard mount according to ACA/IUC for Huber/Hampton standard goniometer heads
Motor and signal currents are transmitted via slip rings enabling unrestricted kappa and phi rotation.
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Accessories
Goniometer Heads |
XYZ Standard; XYZ Short Standard; XYRyRx
Magnetic base or Brass specimen pin |
Additional Stage |
XZTheta additional stage (used in general for High Pressure Cell alignment) |
Temperature Control |
Oxford Cryostrem 700: N2 laminar flow for temperature range 80 – 400 K |
Sample Changer |
Internally developed. |
Dectris Pilatus 2M (Main Detector)
Type |
CMOS hybrid-pixel technology operating in single-photon-counting mode
3 x 8 Modules |
Sensor |
Si 320 µm thick (room temperature; water circuit) |
Pixel Size |
172 x 172 µm2 |
Point-spread function |
1 pixel |
Format |
1475 x 1679 = 2476525 pixels |
Area |
254 x 289 mm2 |
Distance from sample |
82 - 1060 mm |
Intermodule gap |
x: 7 pixels, y: 17 pixels, 8.0% of total area |
Dynamic Range |
20 bits (1:1,048,576) |
Readout time |
3.6 ms (frame rate 30 Hz) |
Adjustable threshold |
range 2- 20 keV (energy resolution 500 eV) |
Energy range |
3 - 30 keV (quantum efficiency: 3 keV 80%; 8 keV 99%; 15 keV 55%) |
Counting rate per pixel |
> 2 x 106 X-ray/s |
Data Formats |
CBF (mosflm, xds); TIF (fit2d, AreaDiffractionMachine) |
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|
MarResearch MarCCD 165 (offline, on 2theta Goniometer arm)
Type |
Single CCD, single fiber-optic sensor |
Sensor |
CCD 61mm x 61mm; 4096 x 4096 15μm pixels (-70°C)
Fiber-optic Taper Demagnification Ratio 2.7:1
|
Pixel Size (image) |
79.1685 μm (2048 x 2048, 2x2 binning) |
Point-spread function |
100 μm FWHM (Phosphor 40μm thick) |
Active Imaging Surface |
Round, 165mm diameter (21,000mm²) |
Distance from sample |
60 - 565 mm, mounted on the 2theta arm of the huber goniometer |
Readout Electronics |
4-channel readout; 16-bit ADCs |
Readout Time |
2.5 s (x2 binning) |
Readout Noise |
13e⁻/pixel @ 2.5 sec readout
|
Dark Current |
<0.01e⁻/pixel/sec @ 2048 x 2048 pixels |
DQE |
Up to 0.8 for 8KeV to 12keV radiation |
Sensitivity (Gain) |
6e⁻/12keV photon |
Full Well Capacity |
400,000e-/pixel = 51,000 12keV photons/pixel @ 2048 x 2048 pixels |
Data Format |
mccd (mosflm, xds, fit2d, AreaDiffractionMachine) |
Amptek X-123 SSD
Type |
Fluorescence |
Sensor |
Silicon Drift Detector (SDD) for X-Ray detection (500 µm) |
Detector size |
25 mm2 |
Electronic Noise (typical) |
73 eV FWHM (8.7 e- rms) |
FWHM 55Fe 5.9 keV peak |
125-140 eV |
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Other Experimental Setup
On-Axis Camera |
Sample visualization: Arinax BZoom system (1 x 1.2 mm2 at x1,down to x7 available). |
Al Attenuators |
150, 250, 800, 2500 μm and combinations |
Beam defining apetures |
Pt/Ir : 200, 100, 50, 20, 5 μm |
Xcell |
Xe pressure cell |
Software for Crystallography
Software |
Version |
ccp4 |
7.0.65 |
XtalView |
4.1 |
expo |
1.14.10 |
fit2d |
18.002 |
hkl2map |
0.4b |
ilmilione |
2.2.0 |
MIFit |
2010.10 |
pymol |
1.7.1.3 |
shelxle |
1.0.664 |
shelx |
2006_3-1 |
xds |
20190315 |
fityk |
1.2.1 |
GIDVis |
2020 |
Last Updated on Monday, 29 May 2023 10:40