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Abstract <p>The front-end is a synchrotron radiation (SR) beamline section designed to fit the vacuum, radiation, and optical conditions of an SR source to those of experimental stations. Thermal operation modes are calculated for the basic elements of front-ends developed for undulator synchrotron radiation beamlines 1–1 and 1–2 of the Siberian Circular Photon Source (SKIF). It is expected that the output power of a SR beam from a linear undulator will attain 7.1 kW. Modeling is carried out by using the finite element method implemented in the COMSOL Multiphysics 6.2 software and the non-uniform power density method. The results for the development of front-end elements and the 3D-modeling of temperature and mechanical stress fields under continuous thermal load and ultrahigh vacuum conditions are reported. Calculation is performed for the following elements: fixed mask, movable photon shutter, adjustable mask, radiation shutter, diamond vacuum windows, thermal filters, and SR beam monitors. The obtained data show that the developed systems of cooling the front-end elements make it possible to withdraw the incoming thermal energy of synchrotron beams to a full extent to provide their normal operation.</p>

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Modeling the Thermal and Mechanical Operation Modes of X-Ray Optical Elements for Ultrabright Synchrotron Radiation Beams from 4+ Generation Sources

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • P. S. Zavyalov,
  • S. N. Makarov,
  • A. P. Belousov,
  • K. V. Zolotarev,
  • A. D. Nikolenko,
  • V. V. Ovsyannik

摘要

Abstract

The front-end is a synchrotron radiation (SR) beamline section designed to fit the vacuum, radiation, and optical conditions of an SR source to those of experimental stations. Thermal operation modes are calculated for the basic elements of front-ends developed for undulator synchrotron radiation beamlines 1–1 and 1–2 of the Siberian Circular Photon Source (SKIF). It is expected that the output power of a SR beam from a linear undulator will attain 7.1 kW. Modeling is carried out by using the finite element method implemented in the COMSOL Multiphysics 6.2 software and the non-uniform power density method. The results for the development of front-end elements and the 3D-modeling of temperature and mechanical stress fields under continuous thermal load and ultrahigh vacuum conditions are reported. Calculation is performed for the following elements: fixed mask, movable photon shutter, adjustable mask, radiation shutter, diamond vacuum windows, thermal filters, and SR beam monitors. The obtained data show that the developed systems of cooling the front-end elements make it possible to withdraw the incoming thermal energy of synchrotron beams to a full extent to provide their normal operation.