Component Manual for the Neutron Ray-Tracing Package McStas, version 3.9

14.105  The SANSQMonitor McStas Component

A circular detector measuring the radial average of intensity as a function of the momentum transform in the sample.

Identification

Description

A simple component simulating the scattering from a box-shaped, thin solution of monodisperse, spherical particles.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

NumberOfBins

Number of bins in the r (and q).

100

RFilename

File used for storing I(r).

"RDetector"

qFilename

File used for storing I(q).

"QDetector"

RadiusDetector

m

Radius of the detector (in the xy-plane).

DistanceFromSample

m

Distance from the sample to this component.

LambdaMin

Å

Max sensitivity in lambda - used to compute the highest possible value of momentum transfer, q.

1.0

Lambda0

Å

If lambda is given, the momentum transfers of all rays are computed from this value. Otherwise, instrumental effects are neglected.

0.0

restore_neutron

If set to 1, the component restores the original neutron.

0

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