IN13 backscattering spectrometer: an instrument in evolution

The use of IN13 backscattering spectrometer at ILL is getting larger and larger, in particular in the biological community. Indeed, it explores a time-space window of a few angstroms for times up to 100 ps, which is well adapted to the motions in biological samples. On the other hand, its major drawback is a quite low neutron flux on the sample, implying long acquisition times which impose limits on experimental data obtainable and important sample mass. A major upgrade of the instrument is now processing, aiming to higher neutron flux and improvement of instrument versatility, thus making of IN13 a very competitive instrument.