SwissNeutronics AG - Bruehlstrasse 28 - CH-5313 Klingnau - Switzerland - phone: +4156 245 02 02 - tech@swissneutronics.ch

polarizing reflectors

The polarizing Fe/Si supermirror have a very high polarization (>99%) thus a single reflection is already sufficient to obtain a beam with excellent polarization. Scince the reflection angles are small (a few degrees) only rather narrow beams can be typically handled. However, using parallel arrangements a larger beam width can be covered.

Particular features are:

  • high polarization of Fe/Si supermirror

  • simple integration into beam line

 

Downloads: Flyer polarizing devices

Reflection polarizer - OFFSPEC @ ISIS (2008)

  • Reflector design
     Type:
    Length:
    Width:
    Substrate:
    Coating:    		single reflection
    500 mm
    60 mm
    Borofloat
    FeCoVTi/Ni m = 3.0

Super-flat polarizer - BL04 magnetism reflectometer - SNS (2010)

  • Reflector design
     Type:
    Length:
    Width:
    Substrate:
    Coating:    		single reflection
    400 mm
    60 mm
    super-polished Borkro glass
    FeSi m = 4.0

Reflection polarizer - SuperAdam @ ILL (2014)

  • Reflector design
     Type:
    Length:
    Heigth:
    Width:
    Substrate:
    Coating:    		double reflection (periscope)
    500 mm
    150 mm
    5 mm
    Borofloat
    FeSi, 3.7 ≤ m ≤ 4.3
    Specials
    Integrated knife-edges for exact definition of beam shape

Kink polarizer - NSE @ SNS (2015)

  • Reflector design
     Type:
    Length:
    Heigth:
    Width:
    Substrate:
    Coating:    		2-channel kink design
    792 mm
    80 mm
    40 mm
    super-polished Borkron glass
    FeSi, m = 5; NiTi, m = 1.4
    Specials
    The guide element deflects the beam by 3.5°. All neutrons undergo at least one reflection, thus a wide spectrum of wavelengths are polarized.