Author: Xu, J.Q.
Paper Title Page
THPPR022 Radiation Dose Simulation and Measurement plan for SSRF Beam Lines by Using ATOM Phantoms 4008
  • Y. Sheng, L.X. Liu, X. Xia, J.Q. Xu
    SINAP, Shanghai, People's Republic of China
  Radiation dose assessment in advanced synchrotron radiation facility is challenging due to the complexity and uncertainties of radiation source terms induced by high energy particle accelerator. Shanghai Synchrotron Radiation Facility, SSRF, is the first third-generation synchrotron facility in China, which was completed in 2009. Radiation dose assessment for workers at SSRF Beam lines is highly concerned. This study presents the dose simulation with Monte Carlo method. The dose simulation was performed with a hybrid phantom coupled into MCNPX code. The hybrid phantom was constructed by combining the ATOM phantom and the Voxel-based Chinese Reference female Phantom, VCRP-woman, originally developed by using the high resolution color photographs. The organs absorbed dose calculated for photon and neutron were compared. An Experiment of measuring the organs dose by using the ATOM phantom will be performed in the near future.  
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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