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

collimators

SwissNeutronics produces a wide range of neutron beam collimators for individual applications:

  • foil collimators

  • solid state collimators

  • lamellar solid state collimators

Features of the collimators are:

  • Soller & radial collimators

  • collimation as small as 3’ (1 mrad)

  • high transmission

  • foils made from Mylar, Kapton, etc.

  • solid state collimators using Si wafers:

    • tWafer ≥ 0.1 mm

    • length: 10 – 30 mm

    • cross-sections: 10 × 10 mm² → 200 × 200 mm²

  • inclusion of magnetic guide fields

divergence profile of collimators - neutron transmission measurement

Transmission of foil and a solid state collimator as a function of the divergence as measured with a neutron wavelength of 5Å

Soller-type lamellar solid state collimator (10') - Kompass @ FRM-II (2016)

  • Collimation
    Collimation:
    Beam area:    		10’
    30.2 mm (w) × 200 mm (h)
    Substrate
    Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Si
    46
    103.1 mm (w) × 202 mm (h)
    0.3 mm
    Gd2O3 printed on both sides
    Frame
    Material:
    Outer cross-section:
    Length:    		Aluminium
    50.2 mm (w) × 221 mm (h)
    106.1 mm

Soller-type lamellar solid state collimator (40') - Kompass @ FRM-II (2016)

  • Collimation
    Collimation:
    Beam area:    		40’
    44.5 mm (w) × 200 mm (h)
    Substrate
    Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Si
    68
    25.8 mm (w) × 202 mm (h)
    0.3 mm
    Gd2O3 printed on both sides
    Frame
    Material:
    Outer cross-section:
    Length:    		Aluminium
    64.5 mm (w) × 221 mm (h)
    28.8 mm

Radial foil collimator -SwissNeutronics AG (2016)

  • Collimation
    Angular range:
    Angular spacing:
    Beam active height:
    Inner radius:
    Outer radius:    		12°
    1.2°
    275 mm
    296mm
    504 mm
    Substrate
    Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Mylar
    9
    200 mm × 275 mm
    0.024 mm
    Gd2O3 printed on both sides
    Frame
    Material:
    Outer cross-section:
     
    Length:    		Aluminium
    135.2 mm (w) × 351 mm (h)
    -> 91.7 mm (w) × 351 mm (h)
    211.2 mm
    Specials
     Each foil is individually tensioned

Soller-type lamellar solid state collimator (30') - Kompass @ FRM-II (2014)

  • Collimation
    Collimation:
    Beam area:    		30’
    100 mm (w) × 214 mm (h)
    Substrate
    Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Si
    358
    34.4 mm × 104 mm
    0.3 mm
    TiGd on both sides
    Frame
    Material:
    Outer cross-section:
    Length:    		Borofloat glass
    122 mm (w) × 236 mm (h)
    60 mm
    Specials
     With magnetic casing for guide field.

Soller-type Solid state collimator (10') - BOA @ PSI (2013)

  • Collimation

     

    		Collimation:
    Beam area:    		10'
    80 mm (w) x 40 mm (h)
    Substrate

     

    		Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Si
    800
    35 mm x 40 mm
    0.1 mm
    TiGd on both sides
    Frame

     

    		Material:
    Outer cross-section:
    Length:    		aluminium
    59 mm (w) x 128 mm (h)
    35 mm

Radial foil collimator - E4 @ HZB (2013)

  • Collimation

     

    		Collimation:
    Beam area:

     

    		2.2°
    82 mm (w) x 160 mm (h)
    -> 90 mm (w) x 160 mm (h)
    Substrate

     

    		Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:     		Mylar
    6
    106 mm x 300 mm
    0.023mm
    Gd2O3 printed on both sides
    Frame

     

    		Material:
    Outer cross-section:

    Length:     		aluminium
    112 mm (w) x 200 mm (h)
    -> 120 mm (w) x 200 mm (h)
    307 mm

Soller-type foil collimator (10') - prototype (2013)

  • Collimation

     

    		Collimation:
    Beam area:    		10'
    40 mm (w) x 120 mm (h)
    Substrate

     

    		Material:
    Number of substrates:
    Format of substrates:
    Thickness of substrates:
    Absorbing coating:    		Mylar
    64
    120 mm x 200 mm
    0.023 mm
    Gd2O3 printed on both sides
    Frame

     

    		Material:
    Outer cross-section:
    Length:    		aluminium
    65 mm (w) x 165 mm (h)
    200 mm