W0038

Advances in Instrumentation for Medium Flux Neutron Sources. D. Clemens^a, J. Schefer^a, P. Böni^a, P. Fischer^a, W. Wagner^b, and A. Furrer^a, ^aLaboratory for Neutron Scattering, ETH Zuerich & PSI, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland, ^bPaul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

Today, medium scale neutron sources do not need to accept that their instrumentation must always be inferior to what is realized at high flux centers as the ILL. At the recently inaugurated continuous spallation source SINQ the opportunity has been taken to realize some possibilities not only to improve the data collection and flexibility of standard instruments but to optimize the neutron transport of cold neutrons to the spectrometers, as well. The liquid D2 source feeds a guide system that is for the first time totally coated with supermirrors (except for SANS guide). Flux gains up to a factor 3 in respect to conventional Ni guides have been confirmed. The means to amend thermal neutron diffractometers are focusing Ge composite monochromators and the installation of large multi-channel detectors. The 4-circle diffractometer can access large areas in reciprocal space as it is equipped with three microstrip area detectors each having a lifting mechanism. Here, the storage of all measured frames accesses additional peaks in the data reduction procedure. The SANS and the reflectometer AMOR are designed to a high degree of flexibility and will equally profit from area detectors. Focusing anti trumpet neutron guides provide higher fluxes at the sample position. This spin off development of the PSI supermirror production has already been installed at several other centres and benefits from the fact that coatings reflecting to 3 theta-c(Ni) are now state of the art. Recent success in the development of mirrors that effectively polarize in low external field gives benefit to the polarized neutron instruments.