[ Identification | Description | Input parameters | Links ]

The ILL_D4 Instrument

D4 Diffractometer for liquids at the ILL.

Identification

Description

D4 Diffractometer for liquids at the ILL, installed on the hot source.

The dedicated liquid and amorphous instrument D4 is a two-axis diffractometer
equipped with nine 1D position sensitive microstrip detectors. In this model,
a PSD banana detector is also present.

The monochromator take-off angle is 2Theta_M ~ 20-25 deg, variable. The available
monochromators are all vertically focusing, Cu (200) for 0.7 Angs, Cu (220)
for 0.5 Angs.

Cu       002 DM=1.807 AA
Cu       220 DM=1.278 AA

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
lambdaAngsWavelength at monochromator0.7
DMAngsd-spacing of monochromator1.807
samplestrFile name for powder/liquid description LAU/LAZ/qSq/Sqw"SiO2_liq.qSq"
RVmMonochromator vertical curvature, 0 for flat, -1 for automatic setting-1
L1mSource-Monochromator distance6.4
L2mMonochromator-Sample distance2.61
L3mSample-Detector distance1.148
verbose1Print DIF configuration. 0 to be quiet1

Links


[ Identification | Description | Input parameters | Links ]

Generated on 2024-01-03 11:47:43