SASdetector

parent:

SASinstrument

The SASdetector element

Name	Type	Occurrence	Description	Attributes
name	string	[1..1]	Identifies the name of this detector.
SDD	float	[0..1]	Distance between sample and detector.	unit={unit} [1]
offset	container	[0..1]	Offset of this detector position in X, Y, (and Z if necessary).
orientation	container	[0..1]	Orientation (rotation) of this detector in roll, pitch, and yaw.
beam_center	container	[0..1]	Center of the beam on the detector in X, Y, (and Z if necessary).
pixel_size	container	[0..1]	Size of detector pixels in X, Y, (and Z if necessary).
slit_length	float	[0..1]	Slit length of the instrument for this detector, expressed in the same units as \(Q\). (See Rules)	unit={unit} [1]

geometry

See the figures in Definition of the coordinate axes.

offset

Name	Type	Occurrence	Description	Attributes
\(x\)	float	[0..1]	Offset of the detector position in X.	unit={unit} [1]
\(y\)	float	[0..1]	Offset of the detector position in Y.	unit={unit} [1]
\(z\)	float	[0..1]	Offset of the detector position in Z.	unit={unit} [1] [2]

orientation

Note

The orientation element is intended to describe simple rotations about a single axis rather than a full set of rotations as in a crystallographic context.

Name	Type	Occurrence	Description	Attributes
roll	float	[0..1]	Rotation about the Z axis (roll).	unit={unit} [1]
pitch	float	[0..1]	Rotation about the X axis (pitch).	unit={unit} [1]
yaw	float	[0..1]	Rotation about the Y axis (yaw).	unit={unit} [1]

beam_center

Position of the beam center on the detector

Name	Type	Occurrence	Description	Attributes
\(x\)	float	[0..1]	Position of the beam center on the detector in X.	unit={unit} [1]
\(y\)	float	[0..1]	Position of the beam center on the detector in Y.	unit={unit} [1]
\(z\)	float	[0..1]	Position of the beam center on the detector in Z.	unit={unit} [1] [2]

pixel_size

Name	Type	Occurrence	Description	Attributes
\(x\)	float	[0..1]	Size of a detector pixel in X.	unit={unit} [1]
\(y\)	float	[0..1]	Size of a detector pixel in Y.	unit={unit} [1]
\(z\)	float	[0..1]	Size of a detector pixel in Z.	unit={unit} [1] [2]

---

Table Notes

[1]	(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) The unit attribute is required. See Rules for acceptable values.

[2]	(1, 2, 3) While \(z\) is allowed by the standard (provided by use of a standard size element in the XML Schema), it does not make sense to use it for small-angle scattering in some situations as noted. Use of \(z\) in such situations may be ignored by processing software.