Construction and performance test of SGM-TRAIN at UVSOR

Area of Science:

• Optics and Spectroscopy
• Synchrotron Radiation Technology

Background:

• The UVSOR facility requires advanced instrumentation for synchrotron radiation research.
• Existing monochromators may have limitations in energy range, resolution, or polarization control.

Purpose of the Study:

• To introduce and describe the design of the new spherical-grating monochromator with translational and rotational assembly (SGM-TRAIN).
• To report on the performance tests of the SGM-TRAIN, highlighting its capabilities and improvements over previous models.

Main Methods:

• Construction of the SGM-TRAIN at BL5A of the UVSOR facility.
• Detailed design description of the SGM-TRAIN, incorporating translational and rotational assembly with a normal-incidence mount.
• Performance testing of the SGM-TRAIN, including evaluation of energy range, resolving power, polarization capabilities, and reduction of second-order light.

Main Results:

• The SGM-TRAIN covers a wide energy range from 5 to 250 eV.
• The instrument demonstrates high resolving power and the capability to utilize both linear and circular polarization.
• Effective reduction of second-order light has been achieved.
• Two computer-controlled driving modes are implemented for enhanced usability.

Conclusions:

• The SGM-TRAIN represents a significant advancement in monochromator technology for synchrotron radiation applications.
• Its enhanced features provide greater flexibility and precision for spectroscopic studies.
• The successful performance tests validate its utility for a broad spectrum of scientific investigations.