Focusing system of synchrotron radiation with refractive mosaic lenses for the station “extreme state of matter” of the VEPP-4

An X-ray refractive mosaic lens was used to focus the synchrotron radiation. The focusing system allows the SR to be compressed into a small spot. A program for controlling the adjusting device has been developed; calculations and experiments on the absorption and heating of the lens under polychromatic radiation have been carried out. The experiment showed significant heating of the lens (17 ° C / sec); the system is installed and debugged on channel 8 of VEPP-4; experiments on focusing the synchrotron radiation of a monochromatic beam were carried out. Refractive optics showed stable performance.