WASP - High-intensity spin-echo spectrometer

High-intensity spin-echo spectrometer

WASP is a spin-echo spectrometer optimised for high signal and high momentum transfer measurements. It replaced the ILL spectrometer IN11. The instrument has received substantial financial support from Forschungszentrum Jülich.

The new magnetic coil layout gives the instrument its name: wide angle spin-echo (WASP).

Instrument layout - This artist view of the project shows the main characteristics of the new instrument. Note the small arrows which represent the neutron spin orientation.

More details on the instrument. This cut of the 3D layout shows the main parts of the instrument as they appear in the final project.

Applications

WASP is optimised for studying diffusion of atoms and spin excitations on atomic and molecular length scales of 0.1-10 nm. With regards to the data rate, WASP is 10-100 better than existing spin-echo spectrometers. Typical applications for WASP are:

Study of the motion of biological functional groups
Diffusive dynamics in incoherent scatterers
Dynamics in molecular magnets
Dynamics of 1d and 2d confined molecules
Development of new models for systems near the glass transition
Small samples (magnetic or other)