[ Identification | Description | Input parameters | Links ]
ILL_Lagrange InstrumentIN1-Lagrange hot neutrons spectrometer for liquids at the ILL. The dedicated liquid and amorphous instrument Lagrange is a spectrometer with constant final neutron energy, and variable incoming neutron energy. The analyser is a focusing barrel covered with PG analyser, all focusing to the detector. The flux is thus very high, and the resolution is that given buy the PG crystal mocaicity. 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 PG 002 DM=3.355 AA --------------------------
| Name | Unit | Description | Default |
| lambda | Angs | Wavelength at monochromator | 0.897 |
| DM | Angs | d-spacing of monochromator | 1.807 |
| RV | m | Monochromator vertical curvature, 0=flat, -1=automatic | -1 |
| coh | str | File name for sample coherent scattering contribution | "Rb_liq_coh.sqw" |
| inc | str | File name for sample incoherent scattering contribution | "Rb_liq_inc.sqw" |
| L1 | m | Source-Monochromator distance | 6.35 |
| L2 | m | Monochromator-Sample distance | 2.55 |
| L3 | m | Sample-Detector distance | 0.901 |
| verbose | 1 | Print spectrometer configuration. 0 to be quiet | 1 |
ILL_Lagrange.instr.
[ Identification | Description | Input parameters | Links ]
Generated on 2024-01-03 11:47:43