[ Identification | Description | Input parameters | Output 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.
Name Unit Description Default
lambda Angs Wavelength at monochromator 0.7
DM Angs d-spacing of monochromator 1.807
sample str File name for powder description "SiO2_liq.qSq"
RV m Monochromator vertical curvature, 0 for flat, -1 for automatic setting -1
L1 m Source-Monochromator distance 6.4
L2 m Monochromator-Sample distance 2.61
L3 m Sample-Detector distance 1.148
verbose 1 Print DIF configuration. 0 to be quiet 1

Links


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Wed Sep 5 11:20:18 2018