Design and construction of beamline-NE1 for circularly polarized synchrotron radiation from the 6-GeV TRISTAN Accumulation Ring

Abstract

The beamline for the circularly polarized synchrotron radiation at the 6-Ge V Accumulation Ring for the TRISTAN project is now under construction. The insertion device of this beamline was designed to produce circularly polarized x rays at the photon energy range of200 e V-I 00 ke V. The beamline is divided into the following three branches: ( 1) High resolution Compton scattering and magnetic Compton scattering experiments; (2) mUltipurpose experiments such as magnetic x-ray scattering and magnetic x-ray absorption; and (3) completely circularly polarized soft x rays.

Bent-crystal monochromators for high-energy synchrotron radiation

“…Both monochromators are designed for a single-crystal arrangement. The 100±150 keV monochromator is doubly bent (Kawata et al, 1989(Kawata et al, , 1998. A symmetric Johann-type Si 400 re¯ection will be used in the ®rst phase and in the future an asymmetrically cut crystal will be used.…”

Compton scattering study of 4fmagnetism inCeFe2

“…13 The flux at the sample was of the order of 10 10 p/s mm 2 and the focal spot was approxi-mately 9 mmϫ2 mm. The choice of the optimal photon energy is guided by a number of considerations.…”

Performance of bent-crystal monochromators for high-energy synchrotron radiation

“…At present the crystal of the 300 keV monochromator has to be moved so that the white beam can pass through when the 100 keV monochromator is used. from the crystals heat up the monochromator components and the vacuum chambers (Kawata et al, 1989). Stability of the monochromators is very important because accumulating the data for Compton scattering experiments takes several hours.…”