Physics – Condensed Matter
Scientific paper
Mar 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phyb..276..166a&link_type=abstract
Physica B: Physics of Condensed Matter, Volume 276, p. 166-167.
Physics
Condensed Matter
1
Scientific paper
Very recently, MARS entered the realization stage as the first second generation instrument at SINQ, Villigen, Switzerland. Its fundamental design (distance from source, pulse repetition rate and analyzer material) is very similar to that of IRIS (ISIS, UK), but there are some distinct differences mainly to increase the intensity and to adapt it to SINQ: The whole guide will be supermirror coated (/m=2) and five choppers will provide a very clean beam at the sample. In addition, all analyzer banks will be covered with mica crystals pointing to single 3He-detectors (a total of 12 banks and detectors). This arrangement enables a very flexible adaptation of the secondary to the primary energy resolution - which is depending on the incident energy - by adjusting the analyzer's 2Θ-angle. A by-product of this discrete number of analyzer banks (in contrast to IRIS' continuous bank) is the possibility to place additional diffraction detectors at various angles between the analyzer banks and hence cover a wider /d-range. MARS is planned to become operational in 2001.
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