IN16B, a sub-micro-eV energy resolution backscattering spectrometer with a very high count rate and wide dynamic range
The flux at the sample position is enhanced by a new 'quasi-ballistic' neutron guide and its focusing to a fast rotating Phase Space Transformation (PST) chopper at the end-of-guide position. The PST, together with a linear motor Doppler drive enables to double the energy transfer range at sub-microeV energy resolution. The vertical increase of the analyser surface together with a new vertically position sensitive multi-tube-detector will nearly double the count rate for the large angles. The background is optimized by placing the analysers and all flight path in vacuum and by using a background chopper.
The following yet incomplete list will with time be completed with new examples from IN16B.
This 3D drawing shows the status of the project by the end of 2009.