Below are details of the calibration standards used on ID13. This information can be used to determine beam centre, sample-to-film distance and detector tilt/rotation correction.

Wide-angle scattering standards

Sample

a/b/c

a/b/g

SRM standard

Al2O3

4.75893 4.75893 12.9917

90 90 120

No167 R3c

Si

5.43094 5.43094 5.43094

90 90 90

No 227 Fd3m

Small-angle scattering standards

Sample

first order

source

Ag-behenate

5.837 nm1

powder rings

Collagen

65 nm

meridional arcs

1Blanton et al., Powder Diffraction, 10,2,91-95 (1995)