Numerical analysis of shielded coherent radiation and noninertial space-charge force with 3-D particle tracking
A 3-D particle tracking code is developed to estimate emittance growth in bunch-compressors. The simulation code enables one to calculate the electron beam distribution in six-dimensional phase space along a given beam line and estimate emittance growth caused by shielded coherent radiation and noninertial space-charge forces as well as the usual space-charge force and higher-order aberrations. We present some examples of calculations for unshielded and shielded coherent synchrotron radiation, including a comparison with 1-D theoretical prediction. The relation between emittance growth and the complex radiation resistance of conducting walls is also introduced.