Abstract
Abstract The photon shutter is one of the critical elements on the front end of the beamlines at the Advanced Photon Source (APS) now under construction at Argonne National Laboratory (ANL). The conceptual design of the photon shutter uses an enhanced heat transfer tube developed at ANL. Due to large thermal loads on the shutter, inclined geometry is used in the design to spread the footprint of the X-ray beam. Even then, thermal loads are very critical. To address the thermal and thermomechanical issues, analytical studies have been applied to a simplified model of the shutter tube. Both closed-form solutions and ANSYS finite element analysis are conducted using both a uniform and a Gaussian heat flux. Results for maximum deflections and stresses are obtained and compared with the available stress/fatigue data for the materials proposed for the shutter design.
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