Unified Data Sheet P02

P02 - Hard X-ray Diffraction Beamline


PETRA III is one of the foremost 3rd generation synchrotron facilities in the world due to its low emittance storage ring that creates a very small and highly brilliant source. Such a source is ideally suited for experiments at extreme conditions since they require hard x-rays with high brilliance and a small focus. Beamline P02 is designed to meet these needs by providing two experimental stations for Hard x-ray diffraction. One station is dedicated to High Resolution Powder Diffraction (HRPD) at ambient pressure and high/low temperatures. The second station, the Extreme Conditions Beamline (ECB), is optimized for micro powder and single crystal diffraction at simultaneous high pressure and high/low temperatures in the Diamond Anvil Cell and the Paris Edinburgh Press. The ability to create extreme conditions is complemented on both beamlines by time resolved diffraction capabilities in order to explore the kinetics of physical processes such as metastabilities during a phase transition.

CONTACT

GENERAL SPECIFICATIONS

techniques available

P02.1 High-Resolution Powder Diffraction Beamline (HRPD)

P02.2 Extreme Conditions Beamline (ECB)

photon source

undulator U23, 2 m long

period

number of periods

max power

23 mm;

source size: 140(H)x5.6(V)µm2, divergence: 7.9(H)x4.1(V) µrad2

1.7 kW

source brilliance 

1019 ph / s / 0.1% bw / mA

polarization available

linear horizontal

energy range 

P02.1 => fixed to 60 keV

P02.2 => 8.6-100 keV, currently fixed to 25.7, 42.9 and 60 keV

beamline energy resolution

P02.1 => DE/E = 2 x 10-4

P02.2 => Si (111) and (311), DE/E = 1 x 10-4/ 5 x 10-5

max flux ON SAMPLE

P02.1 => 5·1010 ph/s at 60 keV

P02.2 => 1·1012 ph/s at 25.6 keV (KB Mirror Focusing)

spot size ON SAMPLE 

P02.1 => 0.6(H) x 0.9(V) mm2 (FWHM)

P02.2 => 7 (H) x 2 (V) µm2 (CRL focusing), 2 (H) x 2 (V) µm2 (KB mirror focusing)

angle of incidence light – sample 

0 to 90

sample type

solid or liquid

 

OPTICS

type

 (mirror, grating (plane, spherical, etc.), crystal monochromator, etc):

grating properties 

P02.1 => double Laue monochromator with diamond (111) and Si (111) crystals, no other focusing at the moment

P02.2 => double crystal monochromator Si (111) and Si (311), KB mirrors and CRL focusing

energy range         

P02.1 => fixed to 60 keV

P02.2 => 8.6-100 keV, currently fixed to 25.7, 42.9, 60 and 77.1 keV

resolving power 

P02.1 => DE/E = 2 x 10-4

P02.2 => Si (111) and (311), DE/E = 1 x 10-4/ 5 x 10-5

 

ENDSTATION(S)

Sample positioning

Diffractometer

P02.1 => 3 circle goniometer

P02.2 => 1 circle goniometer

Manipulator 

P02.1 => 6 degrees of freedom (SamX, SamY, SamZ, Omega, DiffY and DiffZ) at room temperature

P02.2 => 6 degrees of freedom (Cenx, Ceny, Omega, SamX, SamY, SamZ) at room temperature

transfer system (YES for P02.2)

control (computer both stations)

Sample environment 

P02.1 => temperature range: 90-1200 K, pressure range: n.a.

P02.2 => temperature range: 25-5000 K, pressure range: 1 bar -4 Mbar



Sample environment

pressure range

P02.1 => n.a.

P02.2 => 1-4 Mbar in the DAC (user supplied DAC only)

temperature range

P02.1 => 90 - 450 K (liquid N2 cryo streamer, spinning), 300 - 1150 K (hot air blower)

P02.2 => 4-300 K (He flow cryostat), 300-750 K (wire resistive heated DAC, user supplied only), 300-1500 K (graphite resistive heated DAC, user supplied DAC only), 1200-5000 K (double sided Yb-fiber laser and one sided CO2 heated DAC, user supplied DAC only) 

            

humidity range

            n.a.



Detection modes

Transmission 

P02.1 => Perkin Elmer XRD1621 (CsI bonded amorphous silicon detector)

P02.2 => Perkin Elmer XRD 1621 (CsI bonded amorphous silicon detector), 2 x 2.2 MPix GaAs Lambda , Pilatus 300 k and 1 M (Pilatus only on demand for pump and probe experiments from the detector pool)

Reflection   

P02.1 => Multi analyzer detector bank with scintillation counters

P02.2 => n.a.

Fluorescence           

P02.1 => CdTe fluorescence detector

P02.2 => silicon drift detector

Total electron yield

            n.a.

Grazing incidence angle    

P02.1 => 0.05 degrees

P02.2 => n.a.




Detectors

Type 

PerkinElmer XRD 1621

energy resolution 

 none

count rate 

 max. 63000 counts/sec

spatial resolution 

  point spread function of 1.1 pixels

angular resolution  

 

2theta range  

P02.1 => max Q = 25 Angstrom-1 at SDD of 200 mm

P02.2 => max Q = 18 Angstrom-1 at SDD of 350 mm and 60 keV

read-out time 

  max. 15 Hz read-out frequency

pixel size         

200 x 200 µm2

array size 

 2048 x 2048 pixels, 400 x 400 mm2

field of view  

n. a.

 degrees of freedom / translation stages

4 (parallel to beam, horizontal to beam, tilt and rotation)

cradles

rotation = +/- 30 degrees, tilt = +/- 2 degrees

  typical collection time

depending on sample 0.067-360 sec, maximum 1 s exposure time per frame (longer collection times through accumulation)




Type 

2D 2.3 Mpix GaAs Lambda

energy resolution 

 none

count rate 

 max. 200000 counts/pixel/s

spatial resolution 

  point spread function of 1 pixels

angular resolution  

 

2theta range  

P02.2 => max Q = 12 Angstrom-1 at SDD of 150 mm and 42.7 keV (off centre)

read-out time 

  max. 2 kHz read-out frequency (4 kHz when triggering both detectors 0.0025 s apart)

pixel size         

55 x 55 µm2

array size 

  1536 x 1536 pixels, 84 x 84 mm2

field of view  

n. a.

 degrees of freedom / translation stages

2 (parallel to beam, horizontal to beam)

cradles

n.a.

  typical collection time

depending on sample 0.005 - 360 sec, depending on sample



spectrometer(s) / microscope(s)

Imaging mode  

P02.1 => n.a.

P02.2 => reflection and transmission

type

P02.1 => n.a.

P02.2 => online microscope

energy resolution

  n. a.

lateral resolution

2 µm

field of view

0.2-1 mm (max only on general purpose experiment)

 

other facilities available: LEED, control atmosphere, mass analyzer, in-situ devices etc.

 

CONTROL/DATA ANALYSIS

Software type

Python (Perl)

Data output type

tiff, fio (data arranged in columns)

Data output

tiff, ascii, hkl

Software(s) for quantitative analysis

P02.1

2d data: In House based on Python

integrated / 1d data: common Rietveld programs

P02.2

2d data: DIOPTAS, FIT2d

integrated / 1d data: CrysAlis(Pro), TOPAZ, ...

 

SUPPORT LAB

P02.1 Lab => Chemistry laboratory equipped with glove box (with microscope), ball mill, capillary filler, capillaries, muffle furnace (max. 1200°C), micro scale, fume hood

P02.2 Lab => microscopes, EDM, mechanical micro drilling (for ceramics only)

Shared with Sample Enviorment Group: Offline Ruby/Aligment, Offline Raman, Offline Laser Heating, Offline laser drilling, Gas Loader; FIB (partial access)