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High energy wigglers produce extremely high total powers. For example, the insertion device for one beamline of the Basic Energy Sciences Synchrotron Research Center is an elliptical multipole wiggler which can generate circularly polarized X-rays on axis and produces a total power of approximately 8 kW. This insertion device will be used to simultaneously provide x-rays to three branch lines, a branch equipped with a normal double crystal monochromator feeding a scattering and spectroscopy station, and two branches with single-bounce horizontally deflecting monochromators for Compton scattering and High Energy Diffraction. The crystal optics for this type of device require substantially different heat load solutions than those used for undulator beamlines. We will discuss how the beam is split and shared among the beamline branch lines and present the crystal cooling strategies employed for both the double crystal monochromator and horizontally deflecting single-bounce monochromators.

<title>High-heat-load crystal cooling strategies for an APS wiggler beamline</title>