Rotax technical information
14 Aug 2009



Technical information




​Technical Summary


  • Broad coverage of d-spacings
  • High resolution in back scattering
  • Variable resolution and d-range
  • Ample sample space
  • Short data collection times

Application spectrum

  • Crystal and magnetic structure analysis from powder diffraction data
  • Non-destructive phase analysis of archaeological objects
  • Texture analysis

Instrument Parameters

d-spacing range0.3 to 50 Å
resolution Δd/d0.0035
neutron flight path14.5 to 17.0 m
incident wavelength0.6 to 5.2 Å
2Q-scattering angles10 to 170°


BeamlineN2, beam sharing with PRISMA
Moderator95 K methane
Incident flight path14 - 16 m (variable)
Scattered flight path0.5 - 1.6 m (variable)
Total flight path14.5 - 17.6
Beam size20 x 40 mm (width x height) (variable)
Flux at sample position> 106 n/cm2 /sec (depending on the PRISMA set-up)
Wavelength band0.6 - 5.2 Å
Time window1 - 20 ms
Scattering angle10- 170 deg
d-spacing range0.2 -50 Å
Max. instrument resolution Δd/d0.35 %


Detectors2 linear position-sensitive JULIOS units (standard)
1 linear position-sensitive JULIOS unit (large size)
Scintillator6-Li glass
Scintillator depth1.0 mm
Effective detector area680 x 25 mm (length x height)
940 x 75 mm

Detector resolution

  1. Position
  2. Time

2.3 mm (standard size)
3.3 mm (large size)