The high-resolution neutron spin-echo spectrometer for the SNS with tau >= 1 mu s

In the near future, the SNS will be the most powerful spallation neutron sources worldwide. The neutron instruments at these sources are being planned and many of them are currently under construction. To cover the domain of ultrahigh-resolution spectroscopy a neutron spin-echo (NSE) spectrometer is foreseen. Here, we present the layout of the planned instrument with a Fourier time range that covers tau = I ps... I mus and high effective neutron flux. A huge field of application will be the investigation of soft condensed matter and complex fluids. However, easily accessible optional modes for a ferromagnetic and intensity modulated NSE, respectively, offers access also to magnetic samples. (C) 2004 Elsevier B.V. All rights reserved