Circularly polarized x-ray beamline at 6.5-GeV accumulation ring

Hiroshi Kawata

doi:10.1117/12.138695

20 January 1993 Circularly polarized x-ray beamline at 6.5-GeV accumulation ring

Hiroshi Kawata

Proceedings Volume 1740, Optics for High-Brightness Synchrotron Radiation Beamlines; (1993) https://doi.org/10.1117/12.138695
Event: San Diego '92, 1992, San Diego, CA, United States

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 10¹² at 60 keV, the energy resolution (Delta) E/E equals 1.4 X 10^-3, and the beam size at the sample position is 3 X 8 mm². 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 mm². The heat load problems at the above monochromators and some experimental results by using this beamline are also presented.

Citation Download Citation

Hiroshi Kawata "Circularly polarized x-ray beamline at 6.5-GeV accumulation ring", Proc. SPIE 1740, Optics for High-Brightness Synchrotron Radiation Beamlines, (20 January 1993); https://doi.org/10.1117/12.138695

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