Abstract
A circularly polarized X-ray (CPX) beamline has been constructed at 6.5 GeV Accumulation ring. The insertion device is an elliptical multipole wiggler. The CPX from this device is used by the following two branch lines. One is for magnetic Compton scattering and/or high resolution Compton scattering experiments. The monochromator of this branch line is a quasi- doubly bent crystal monochromator that comprises an array of twenty pieces of water-cooled singly-bent crystals. The obtained performance is as follows; the energy range is 40 - 70 keV, the flux is 6 X 10<SUP>12</SUP> at 60 keV, the energy resolution (Delta) E/E equals 1.4 X 10<SUP>-3</SUP>, and the beam size at the sample position is 3 X 8 mm<SUP>2</SUP>. Another is for magnetic X-ray Absorption Near Edge Structure (XANES) and magnetic Bragg scattering experiments. The optics of this branch line is a combination of a saggital focusing double crystal monochromator and a bent plane mirror. In a moment, the monochromatized X- ray from 6 to 28 keV is available and the focused beam size is about 0.4 X 3 mm<SUP>2</SUP>. The heat load problems at the above monochromators and some experimental results by using this beamline are also presented.
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