MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Hereon> Helmholtz-Zentrum Hereon
Forschungszentrum Jülich> Forschungszentrum Jülich

MLZ is a member of:

LENS> LENSERF-AISBL> ERF-AISBL

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MLZ (eng)

Lichtenbergstr.1
85748 Garching

ERWIN

Powder diffractometer using thermal neutrons

ERWIN (Energy Research With Neutrons) is a high efficiency diffractometer especially dedicated for rapid data collection and parametric material analyses. The two-dimensional position-sensitive 3He wire chamber detector covers a scattering angle range of 135° (in 2θ) as well as a vertical angle range of 15° and thus enables the characterization of powder samples, textured bulk samples and single crystals.
The detector concept enables the recording of diffraction patterns without the need to reposition the detector bench, leading to short measurement times. Thus, ERWIN is well suited for a variety of applications ranging from investigations of solid-state reactions, time-resolved measurements, parametric studies and investigations on small samples.
ERWIN utilizes the monochromator angle of 90° at beam position 8b with a vertically focussing Ge511 monochromator, corresponding to a wavelength of 1.54 Å.
At the next upgrade level, ERWIN will be equipped with three different monochromator positions having discrete 42°, 90° and 120° take-off angles with an optimized primary neutron optics, to enable the flexibility in usage of maximum flux or optimized resolution.

Applications
  • Phase transformations and reaction kinetics
  • Parametric studies
  • Structural characterization of small samples
  • Spatially-resolved diffraction and strain analysis
Research fields
  • Energy storage materials and systems: materials for lithium-ion batteries, hydrogen storage materials
  • Functional materials: ferroelectrics, multiferroics etc
  • Magnetically ordered systems
  • Structural chemistry
  • Engineering materials
Technical data

Monochromator:
Ge(511) with a monochromator take-off angle of 90°: 1.54 Å

Detector: 3He wire chamber detector
  • Scattering angle range: 2θ = 135°
  • Effective height: 200 mm
  • Inner radius: 800 mm
  • Radial oscillating collimator

Instrument Scientists

Markus Hölzel
Phone: +49 (0)89 289-14314
E-Mail: markus.hoelzel@frm2.tum.de

ERWIN
Phone: +49 (0)89 289-14827

Operated by

Logo TUM

Funding

Publications

Find the latest publications regarding ERWIN in our publication database iMPULSE:

impulse.mlz-garching.de

Zitierung Instrument

Heinz Maier-Leibnitz Zentrum. (2018). Energy research with neutrons (ErwiN) and installation of a fast neutron powder diffraction option at the MLZ, Germany. https://doi.org/10.1107/S1600576718004223

Zitat bitte stets einschließlich DOI.

Instrument control

Gallery

Experiment area of ERWIN

© Markus Hölzel, FRM II / TUM

Detector of the instrument ERWIN.

© Ilario Defendi, FRM II / TUM.

ERWIN sample table

© Bernhard Ludewig, FRM II / TUM

MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Hereon> Helmholtz-Zentrum Hereon
Forschungszentrum Jülich> Forschungszentrum Jülich

MLZ is a member of:

LENS> LENSERF-AISBL> ERF-AISBL

MLZ on social media: