A novel double-multilayer monochromator has been designed for the Advanced Photon Source x-ray undulator beamline at Argonne National Laboratory. The monochromator consists of two ultrahigh-vacuum compatible modular vessels, each with a sine-bar driving structure and a water-cooled multilayer holder. A high precision Y–Z stage is used to provide compensating motion for the second multilayer from outside the vacuum chamber so that the monochromator can fix the output monochromatic beam direction and angle during the energy scan in a narrow range. The design details for this monochromator are presented in this paper.
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Shu et al. (1995) studied this question.
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