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AMOR -

the apparatus for multi option reflectometry



Instrument responsibles:
Dr. Thomas Gutberlet, phone +41 (0)56 310-4374
Dr. Jochen Stahn, phone +41 (0)56 310-2518

AMOR instrument cabin, phone +41 (0)56 310-3593
AMOR instrument floor, phone +41 (0)56 310-4605

AMOR is designed as a multi purpose reflectometer adaptable to the experimental demands of surface and interface studies in different fields of research. Phenomena to be challenged may relate to
  • growth
  • wetting
  • absorption
  • adhesion
  • growth
  • (inter-)diffusion
  • corrosion
  • nanocrystals
  • surface magnetism
  • magnetic excitation
  • thin film superconductivity

Measurements with polarized or unpolarized neutrons in the white beam time-of-flight mode and optionally in the θ-2θ mode can be performed. Most of the components are riding on an 8m optical bench so that the chopper - detector distance can be varied in order to give an optimal sample illumination and resolution. The scattering plane is oriented vertically. The inclination angle and thereby the accessible q-range is adjusted by tilting a deflection mirror and/or the sample.



General descriptions on the instrument and its performance can be found in the following papers:

Technical details:



neutron guide




  • cold source (liq. D2)
 λ peak = 0.4 nm


  • mean flux (Au activation)
 1.38 x 108 n s-1 cm-2 mA-1
  • coating Ni-Ti-supermirrors
 m=2



  • cross section
 50 mm x 50 mm

  • λc from simulation
 0.1 nm

chopper



  • disks
 2, side by side, phase coupled

  • gating frequency
 20 ... 100 Hz


frame overlap mirrors




  • cut off wavelength
 ~ 1.3 nm


deflecting mirrors/polarizers




  • supermirrors and multilayer monochromators, double HOPG mono, exchangeable
  • full polarized mode from summer 2003




analyzer




  • FeCo/Si or FeCoV/Ti:N-supermirrors




collimation slits




  • slit dimensions
 (0.05 ... 20 mm) * (5 ... 55 mm)

sample manipulation table




  • rotations
 2 circles (ω: ± 10deg, χ: ± 7deg)

  • translations
 2 directions


maximum sample size




  • 150 mm * 500 mm




alignment aids




  • laser, (electronical inclinometer)




detectors




  • 3He x-y (EMBL wire)

 172 mm * 190 mm, < 2mm resolution,
available summer 2003

  • 3He single detectors
 2


total length chopper - detector L

  • 3.5 ... 10 m
resolution
  • dq/q = 1.0% ... 10%

sample environment
  • electromagnet

Bmax = 1.5 T
room temp.



  • Langmuir trough (summer 2003)
  • liquid-solid sample cell (summer 2003)

operational since July 2000

Last revision : February 6, 2003 by Thomas Gutberlet