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@unpublished{luo:medsi2023-weppp020,
author = {P. Luo and Y.X. Ma and H. Shi and H.Y. Wang},
title = {{A Photon Shutter with a Translational Switching Mechanism at HEPS}},
% booktitle = {Proc. MEDSI'23},
booktitle = {Proc. Int. Conf. Mech. Eng. Design Synchrotron Radiat. Equip. Instrum. (MEDSI'23)},
eventdate = {2023-11-06/2023-11-10},
language = {english},
intype = {presented at the},
series = {International Conference on Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation},
number = {12},
venue = {Beijing, China},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {07},
year = {2024},
note = {presented at MEDSI'23 in Beijing, China, unpublished},
abstract = {{Currently under construction on High Energy Photon Source (HEPS) is a 6GeV at 200mA¿4th Generation Synchrotron Light Source in Beijing. In order to meet all experimental light requirements for the three types of insertion devices of the hard X-ray imaging beamline at HEPS, a photon shutter that considers both large optical aperture and high heat load has been designed for the beamline Front-End. By designing a segmented surface with different grazing incidence angles, the power density of the incident surface irradiation is effectively reduced, while the length of the absorber is effectively shortened. The photon shutter can switch between open and closed states with a translational switching mechanism through a cylinder and a horizontal slide. And it can receive a maximum bam size of 25.2×22.7mm2 with handling a maximum total thermal power of up to 17.2kW and a peak power density of up to 652W/mm2. The structure of the photon shutter was introduced. Finally, the thermal analyses on the absorber of the photon shutter under various insertion operating modes was completed to verify its safety performance.}},
}