Gas bremsstrahlung and associated photon-neutron shielding calculations for electron storage rings.
The EGS4 electron-photon Monte Carlo code has been used to study the characteristics of the bremsstrahlung x rays generated from the interaction of circulating electrons with the residual gas in accelerator storage rings. Gas bremsstrahlung dose rates are given for various opening angles as a function of the electron beam energy ranging from 0.5-10 GeV. Photon and neutron dose rates, generated from various devices struck by gas bremsstrahlung in a synchrotron radiation beamline, are also presented along with the photon spectral and transmission results. The EGS4-predicted results are found to be in basic agreement with the measurements made at the Stanford Synchrotron Radiation Laboratory. Figures, equations, and a simple method useful for the photon-neutron shielding design for beamlines are provided.
Liu
J C
JC
Stanford Linear Accelerator Center (SLAC), CA 94309.
Nelson
W R
WR
Kase
K R
KR
D009502:Neutrons; D010315:Particle Accelerators; D017785:Photons; D011834:Radiation Monitoring; D011835:Radiation Protection; D011874:Radiometry; D012542:Scattering, Radiation