Technical Details

ID27 is built up of three optics hutches (OH1, OH2, OH3), one experimental hutch (EH), a control cabin, a laser heating high pressure laboratory and a workshop.

Hutches

OH1 houses the double multilayer mirror (DMM) and attenuators for the incoming synchrotron beam. The DMM is used to clean the beam after the undulator(s) and produces a ‘pink’ beam. The DMM is at a distance of 30 m.

OH2 houses the double crystal monochromator (DCM) at a distance of 40 m.

OH3 is more or less empty and houses the absorber and beam shutter at the end of the optics hutches before the long tube to the experimental hutch.

The experimental hutch is located at 110 metres (KB-systems) from the X-ray source.

Monochromatic and pink beam

The double-multilayer mirror (DMM) is always in the white beam of the undulator. The DMM is used to suppress harmonics of the undulator. It produces a ‘pink’ beam which can be further monochromatised by the monochromator. The pink beam of the DMM can be used for time-resolved XRD, XRF and XRI down to the microsecond time scale.

The fixed-exit double crystal monochromator (DCM) accommodates two silicon crystals (Si(111)), scatters in the horizontal plane and is used for high resolution nano- and micro-XRD applications.

Focussing options

The Kirkpatrick-Baez KB systems for fucussing offer a large working distance to accommodate complex sample environments. The KB3 is the 'default' focussing device.

Kirkpatrick-Baez mirror systems
  KB1 (super-nano) KB2 (nano) KB3 (micro)
energy range [keV] 15 - 25 33 30 - 60
focus (H × V) [nm] 270 × 220 350 × 500

2000 × 2000

working distance [mm] 180 430 470
  no bending no bending bending

flux [photons/s]
monochromatic beam, ray tracing
15 keV
ΔE/E = 1.5 × 10 -4

7 × 1012 1.1 × 1013

2.2 × 1012

flux [photons/s]
pink beam, ray tracing
15 keV
ΔE/E = 2 %

5 × 1014 7 × 1014

1 × 1014

  nano- and micro-LH-stage for DAC

nano- and micro-LH-stage for DAC

heavy duty stage

micro-LH-stage for DAC

heavy duty stage

 

Sample stages

  • Nano-stage for DAC,  including three translations and one rotation for nano-diffraction and nano-fluorescence experiments in diamond anvil cells (DAC)
  • Micro-stage for Laser-heating stage double-sided YAG and CO2, modified version of the ‘up to-2019’ ID27 laser-heating setup with Schwarzschild-objectives for temperature measurements
  • Heavy duty stage for Paris-Edinburgh press, resistively heated DAC or helium-flow cryostat

Auxiliary devices

  • pressure by ruby luminescence (PRL) and sample visualisation system
  • Vortex detector for X-ray fluorescence measurements with polycapillaries optimised for higher (> 20 keV) or lower (> 10 keV) energies
  • Soller slits system (also called multi-channel collimator MCC) for DAC and PE to reduce Compton scattering of complex sample environments
  • micro-Raman system

Detectors

  • EIGER2 X CdTe 9M for X-ray diffraction XRD
    • 75 × 75 µm2 pixel size
    • 233.2 × 245.2 mm (H × V) sensitive area
    • 3110 × 3269 pixels
    • 238 Hz maximum full frame rate
    • 12 bit counter depth
    • 16 or 32 image bit depth
    • 450 µm sensor thickness
    • ESRF-specific HDF5 data format
  • Vortex detector for X-ray fluorescence XRF
    • with poly capillaries for > 10 and > 20 keV
  • PCO DIMAX fast for X-ray Imaging XRI
    • high-magnification phase-contrast X-ray transmission microscopy
    • hard coherent X-rays
    • using Be parabolic lenses as objective and
    • high resolution CCD camera as detector
    • 7 kHz

Software

Standard software for data analysis is Dioptas and CrysAlisPro.

Special software:

  • to combine the BLISS environment and EIGER2 detector for shutterless data acquisition
  • for powder XRD data acquisition using oscillating Soller slits