| Paper | Title | Page |
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WEPPP018 |
Water-cooled Tungsten Bremsstrahlung Collimator with Adjustable Height for Adapting the Offset of Beamline | |
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| Bremsstrahlung collimator is a device located in HPES(High Energy Photon Source) beamline station. It is used to completely block the possible line of sight of the radiation and to properly collimate the bremsstrahlung radiation so that it has a defined opening angle at collimator exit. Because of the application in vacuum and with the aid of bremsstrahlung ray tracing a tungsten block with transverse dimension 200 millimeters is used as the bremsstrahlung stop. In order to adapt the vertically beam offset caused by monochromator, a lifting mechanism which uses stepper motor as driving part is designed to accomplish the up and down movement of the tungsten block. To meet the white light mode with high power density of the light beam, which might result in a high-heat-load on the tungsten block surface after the interaction between synchrotron radiation and block, a water-cooled structure made of oxygen-free copper rod with inlet and outlet water-cooling channels is assembled in front of the tungsten block. Thus, contributing to heat dissipation of the whole structure. | ||
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