Abstract
Optical design and technical data of the high-resolution normal incidence monochromator (NIM) beamline U125-2 NIM are presented.
Highlights
Normal incidence monochromators (NIM) are typically used in synchrotron beamlines which are dedicated to experiments operating in an energy range of about 4 to 35 eV only
The design of the beamline’s monochromator is based on the so called o -Rowland circle mounting design (Samson, 1967). This implies that the grating has to be rotated and slightly translated in order to get the highest resolution and a small spot size in the experiment
At this beamline the users care for their own experimental setup which ts to their application
Summary
Normal incidence monochromators (NIM) are typically used in synchrotron beamlines which are dedicated to experiments operating in an energy range of about 4 to 35 eV only. The 10m-NIM beamline (Reichardt et al, 2001) was designed for the quasi-periodic undulator U125-2 (Bahrdt et al, 2001). In this special kind of undulator source the period of the magnets is structured in a way that higher orders are suppressed. The design of the beamline’s monochromator is based on the so called o -Rowland circle mounting design (Samson, 1967). This implies that the grating has to be rotated and slightly translated in order to get the highest resolution and a small spot size in the experiment
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