Component Manual for the Neutron Ray-Tracing Package McStas, version 3.8.6

14.78  The SANSNanodiscsFast McStas Component

A sample of monodisperse phospholipid bilayer nanodiscs in solution (water).

Identification

Description

A component very similar to EmptyNanodiscs.comp - however, the scattering profile is only computed once, and linear interpolation is the used to simulate the instrument.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

NumberOfQBins

Number of points generated in inital scattering profile.

200

AxisRatio

Axis ratio of the bilayer patch.

1.4

NumberOfLipids

Number of lipids per nanodisc.

130.0

AreaPerLipidHeadgroup

Å\(^{2}\)

Area per lipid headgroup - default is POPC.

65.0

HeightOfMSP

Å

Height of the belt protein - default is MSP1D1.

24.0

VolumeOfOneMSP

Å\(^{3}\)

Volume of one belt protein - default is MSP1D1.

26296.5

VolumeOfHeadgroup

Å\(^{3}\)

Volume of one lipid headgroup - default is POPC.

319.0

VolumeOfCH2Tail

Å\(^{3}\)

Volume of the CH2-chains of one lipid - default is POPC.

818.8

VolumeOfCH3Tail

Å\(^{3}\)

Volume of the CH3-tails of one lipid - default is POPC.

108.6

ScatteringLengthOfOneMSP

cm

Scattering length of one belt protein - default is MSP1D1.

8.8E-10

ScatteringLengthOfHeadgroup

cm

Scattering length of one lipid headgroup - default is POPC.

7.05E-12

ScatteringLengthOfCH2Tail

cm

Scattering length of the CH2-chains of one lipid - default is POPC.

-1.76E-12

ScatteringLengthOfCH3Tail

cm

Scattering length of the CH3-tails of one lipid - default is POPC.

-9.15E-13

Roughness

Factor used to smear the interfaces of the nanodisc.

5.0

Concentration

mM

Concentration of sample.

0.01

RhoSolvent

cm/Å\(^{3}\)

Scattering length density of solvent - default is D2O.

6.4e-14

AbsorptionCrosssection

1/m

Absorption cross section of the sample.

0.0

xwidth

m

Dimension of component in the x-direction.

yheight

m

Dimension of component in the y-direction.

zdepth

m

Dimension of component in the z-direction.

SampleToDetectorDistance

m

Distance from sample to detector (for focusing the scattered neutrons).

DetectorRadius

m

Radius of the detector (for focusing the scattered neutrons).

qMin

Å\(^{-1}\)

Lowest q-value, for which a point is generated in the scattering profile

0.001

qMax

Å\(^{-1}\)

Highest q-value, for which a point is generated in the scattering profile

1.0

Links