The new neutron powder diffractometer ErwiN

The need for rapid data collection and studies of small sample volumes in the range of mm³ are the main driving force for the concept of a high-throughput monochromatic diffraction instrument at the Heinz Maier-Leibnitz Zentrum (MLZ). A large section of reciprocal space will be addressed with sufficient dynamic range and µs time-resolution while allowing for a variety of complementary sample environments. The medium-resolution neutron powder diffraction (NPD) option for “Energy research with Neutrons” (ErwiN) at the research reactor Munich is foreseen to meet future demand. ErwiN will especially be suited for addressing structural studies and its uniformity of energy-related systems and materials by using simultaneous bulk/spatially resolved NPD. A set of useful experimental options will be implemented enabling time-resolved studies, rapid parametric measurements as a function of external parameters or studies of small samples using an adapted radial collimator.

1)    Monochromatic beam exit
2)    Secondary flight path:
i.    Fast shutter
ii.    Horizontal Soller collimator
iii.    PG-filter
iv.    Specially designed slit system
v.    Neutron monitor
3)    Stock of vanadium sample containers
4)    Six-axis robotic arm (Stäubli TX2-60 CS9)

5)    Sample table (x, y, z, w, q1, q2, q3)
6)    Large curved 2D multidetector (r=800 mm,
h=200 mm, 2q coverage: 135°)
7)    Radial oscillating collimator
8)    30° 2D neutron detector (2x15°) for spatially resolved powder diffraction studies
9)    Radial oscillating collimator (FOV 2 mm)
10)    Fast mechanical remounting plugs

Co-working scientists:

M. Heere (KIT, MLZ)

M. Knapp (KIT)

H. Ehrenberg (KIT)

D.R. Sørensen (MLZ, University of Southern Denmark)

B. Pedersen (MLZ)

A. Senyshyn (MLZ)

E-Paper

FRM 2