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you can calculate the normalization and attenuation factors from a direct beam measurement (called 'Direct beam') and reflected beam measurments (called 'D2O'), where the first angle should have some total ... clicking 'Transfer factors' button. You can do the same transfer with the direct beam numbers and the Sample theta values. Beam ...

direct beam measurment. There are several subroutines available. The simplest one just divides the 2D image by a direct beam spectrum by interpolating the direct beam wavelengths to the reflected beam measurement: ... is the reflected beam measurement, 370340 is the direct beam run number and 370341 is the background measurment. slitwit slitwit is ...

very small beam divergence ~0.1°. Clearly, beam polarisation is only of high quality for wavelengths longer than ~10 Å where the measured flipping ratio exceeds FR > 10. Since beam the beam divergence ... polariser and RF spin flipper to provide a polarised incident beam. More recent developments to implement spin-analysis of the scattered beam ...

ILL is electro-mechanical. The key allowing to switch the beam on is kept prisoner in the beam shutter box while the beam is on. When the beam is off, the two electro-magnetic locks at the sample zone ... D22cupboards D22_PF1_procedure svergun 2. Beam Shutter Control The Beam Shutter Control box (CCO D22) is situated left of the main sample zone ...

front of the neutron guide crossing the "casemate" wall, and after the beam monitor and attenuator, there is a remotely controlled beam-defining aperture. The control box for this unit is in the instrument ... the mirror. Their direction can be made co-axial to the incoming neutron beam, thus faciltitating the setup of the sample in the beam. 7. ...

again (type mad [cr] as /users/d22). 10. Low flux Main reasons for a lower flux than expected are Beam closed Attenuator in place Selector failure Closed entrance aperture (it is controlled from the module ... to do this. Is it really worth to risk to sacrifice the whole detector just for a few hours/days of beam? OK, you still want to do so ? Find ...

BSY meaning detector distance detector translation lateral detector rotation sample distance along beam direction sample table angle (counterclockwise seen from top) sample changer translation lateral sample

38 39 40 41 42 43 44 45 46 47 48 49 50 further parameters stored with the data 51 beam centre address X0 [cell#] x 52 beam centre address Y0 [cell#] x 53 wavelength [] x 54 relative wavelength resolution

display values for estimations of the minimal and maximal distance (radius) of the scattered beam from the beam centre the corresponding values for the momentum transfer Q the corresponding values of the ... Complete the setting information by choosing the collimation, the beamstop position Bx and By, the beam centre values X0 and Y0 (in pixels) ...

a 20° angle to increase the solid angle. The smallest sample to detector distance (D = 1.4 m) with beam centered can be used without shadow on the detector. A standard Hellma cell (1mm path, 200 ml volume) ... aperture is used before the cell to have the maximal flux. Thus, the age of the sample viewed by the beam is not homogenous. The time ...