Structure Improvement and Stability Research of Double Crystal Monochromator

The double crystal diffraction structure based on Bragg diffraction is the core component of the monochromator commonly used in synchrotron radiation beamlines and monochromatic X-ray radiation devices. The stability of the monochromatic X-ray generated by the T-structure double crystal monochromator was investigated. In addition, inspired by the Channel-cut monochromator structure, a new double crystal monochromator structure was designed, and stability of the diffraction-generated monochromatic X-ray was tested. The experimental results show that the stability of the monochromatic X-ray flux generated by the T-structure double crystal monochromator is poor due to its structural defects, while the stability of the monochromatic X-ray flux generated by the new double crystal monochromator structure is better than 1.0%, and the energy range and dose rate of the monochromatic X-ray are significantly improved.