Radiation Protection Dosimetry 82:167-174 (1999)
© 1999 Oxford University Press
Characteristics on Shielding Design Calculation for the SPring-8 Syncrotron Radiation Beamlines
SPring-8, one of the most advanced synchrotron radiation facilities, generates synchrotron radiation with extremely high intensity and high energy by using insertion devices. The high power synchrotron radiation beam brings about new shielding problems, which have usually been neglected in shielding designs for the existing synchrotron radiation facilities. Considerations are focused on several crucial safety-related issues specific to the synchrotron radiation from the SPring-8. They are the issues of gas bremsstrahlung and associated photoneutrons, the gas bremsstrahlung backward scattered by a photon stop, and that of the synchrotron radiation scattered by a concrete floor of the beamline hutch (an enclosure of the beam, optical elements or experimental instruments), so called groundshine.