The flux at the sample position will be enhanced by building a fast rotating Phase Space Transformation (PST) chopper at the end of a ballistic neutron guide. The PST, together with a new Doppler drive will enable to double the energy transfer range at equivalent energy resolution. The vertical increase of the analyser surface will nearly double the count rate. The background is optimized by placing the analysers and all flight path in vacuum and by using a background chopper.

The list below is inherited from IN16 but IN16B will open new fields of investigation.

• A classical field backscattering is rotational tunneling spectroscopy. New developments in this field have arisen from combining neutron spectroscopy and molecular dynamics simulations. Only recently methyl group tunneling has been found in amorphous systems
• Among other classical fields of application are relaxation processes in glasses, H-diffusion in metals or proton and ionic conductors as well as diffusion processes in matrices
• Of growing interest is the study of complex materials like polymers and biological samples
• An increasing interest can also be observed for magnetic investigations
• Further applications of IN16B arise from the possibility to do backscattering and diffraction simultaneously. This option can for instance be used to study the adsorption of molecules from a solvent on to crystals for diffusion studies near phase transitions or other structural re-arrangements

This 3D drawing shows the status of the project by the end of 2009.