LaDiff (under construction)

This instrument is focussed on cold neutrons. Therefore, please carefully check the “Technical data WITHOUT cold source” section. Deviating parameters are in bold. The instrument team is happy to answer any further questions!

Instrumentscheme LaDiff

LaDiff is a cold three axes spectrometer with a wavelength range of 2 Å < λ < 6 Å (1.05 Å^-1 < k_i < 3.15 Å^-1). Energy transfers ∆E < 10 meV can be achieved.

It is an upgrade of the FLEXX instrument formerly at (BER 2/ Helmholtz-Zentrum Berlin), which is being prepared for operation after the move to Garching. In multi-analyser mode, with the MultiFLEXX detector (also from Berlin), 31 angles and five energy channels each can be simultaneously measured.

• Three axes set-up for inelastic measurements in extreme environments such as temperature, magnetic field and pressure
• Lamor diffraction mode with high-resolution ∆d/d ≈ 10^-7
• Diffraction with suppressed background, using the analyser
• XYZ Polarisation and 3D polarisation

Polarised neutrons are optional for all experimental set-ups at LaDiff. Vertical magnetic fields up to 12 T and horizontal magnetic fields up to 2.2 T are also available. Finally, temperatures from 50 mK to 1500 K can be applied using the standard MLZ sample environment.

Xu, J. et al., NIM-A 1031, 166526 (2022).
Grünauer, F. et al., NIM-A 1047, 167854 (2023).
Grünauer, F. et al., JINST 19, P07001 (2024).