The completely renewed and upgraded neutron reflectometer at the TU Delft Reactor Institute
Lars J. Bannenberg (TU Delft - RID/TS/Instrumenten groep)
Raymon Bresser (TU Delft - EMSD AS-south Project technicians)
Piet van der Ende (TU Delft - RID/TS/Technici Pool)
Martin van Exter (TU Delft - EMSD AS-south Project technicians)
William van Goozen (TU Delft - EMSD AS-south Project technicians)
Fred Naastepad (TU Delft - RID/TS/Technici Pool)
Michel A. Thijs (TU Delft - RID/TS/Technici Pool)
Malte N. Verleg (TU Delft - EMSD AS-south Project engineers)
Kees de Vroege (TU Delft - RST/Technici Pool, TU Delft - RID/TS/Technici Pool)
Rien Waaijer (TU Delft - EMSD AS-south Project technicians)
Ad A. van Well (TU Delft - RID/TS/Instrumenten groep)
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Abstract
The horizontal time-of-flight neutron reflectometer at the reactor of the Delft University of Technology, The Netherlands, has been completely renewed, relocated, and upgraded and allows for the study of air/liquid, solid/liquid, and solid/air interfaces. Innovations in the redesign include (i) a completely flexible double disk chopper system allowing to choose the optimal wavelength resolution with exchangeable neutron guide sections between the chopper disks to increase intensity, (ii) a movable second diaphragm just before the sample position to better control the beam footprint on the sample and effectively decrease counting times, and (iii) guides along the entire flight path of the neutron reflectometer. The performance of the renewed reflectometer is illustrated with measurements of hydrogen sensing materials.
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