Author: Lv, J.J.
Paper Title Page
THPPR023 Radiation Shielding Design for Dream-Line Beamline at SSRF 4011
  • J.Q. Xu, L.X. Liu, J.J. Lv, Y. Sheng, X. Xia
    SINAP, Shanghai, People's Republic of China
  The dream-line beamline at Shanghai Synchrotron Radiation Facility, SSRF, is an under construction soft X-ray beam line with a wide energy range and super high energy resolution. It is required to allow online operation beside optical components in the experiment hutch at this beamline when synchrotron light is running. This requires more careful radiation shielding design for the beamline. The radiation shielding designs for the beamline are considered to shield gas bremsstrahlung and synchrotron. Ray tracing was carried out according to the beamline structure and optical components layout. The residual gas bremsstrahlung with optical components and the induced dose rate distribution were simulated with the Fluka code. The synchrotron radiation scattering at optical components was calculated with the STAC08 code. With the simulated results, the specifications of shielding collimators, safety shutters, and hutch wall are given for the beamline. The normalized dose rate results by gas bremsstrahlung are consisted with the measurements or calculations results in other facilities in the world very well.
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THPPR024 Upgrade of Radiation Monitoring System at SSRF for Top-up Operation 4014
  • X. Xia, J. Chen, J.J. Lv, W. Shen, T. Wan, W.F. Wu, X.J. Xu, H. Zhao
    SINAP, Shanghai, People's Republic of China
  The radiation monitoring system (RMS) at Shanghai Synchrotron Radiation Facility, SSRF, is required to upgrade to have dose interlock functions for top-up operation as an important safety issue. This paper describes the basic requirements, design criteria, signal network, and functions of the upgraded radiation monitoring system. Both the prompt dose rate and the accumulative dose alarm were archived for the safety issue after the upgrade. The reliability and stability of the upgraded RMS are in testing for getting operation permission from authority for radiation safety issue.