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Studies a new and reliable cooling method for diamond crystals in third generation light sources. Mounting method of diamond monochromator for high brilliance synchrotron radiation; Introduction of a diamond platement as an interface to reduce the strain from brazing between the diamond monochromator and its Cu block cooling device; Estimation of mounting strain.

Describes the design and installation of a double crystal monochromator accommodating water or liquid nitrogen cooling device for a first monochromator crystal in the x-ray undulator beamline NE3 of the TRISTAN accumulation ring. Silicon first crystal; Effect of the deformation of the rocking curve profile on the throughput of the monochromatic beam.

Describes a few kinds of x-ray optics together with x-ray sciences developed at the Photon Factory ring and the Tristan accumulation ring. Monolithic monochromator; Water-cooled quasi-doubly bent crystal monochromator; Asymmetric monochromator; Cryogenic cooling double-crystal monochromator; Function of the main ring; Fourth-generation light source.

Describes the design and installation of a scanning wire position monitor for insertion devices in an x-ray undulator beam line. Principle of the monitor and its limitations; Signal level of the monitor; Components.

Presents an abstract of a paper describing the construction of a test undulator beamline BL-BW-TL for use in a feasibility study for synchrotron radiation (SR) experiments using the Tristan Main Ring as a superbrilliant x-ray source in the autumn of 1995. Location of the SR experimental station; Cooling method for the first crystal of the monochromator.