Abstract
Accurate modeling of synchrotron-radiation photon flux inside the vacuum chamber is important for mitigating electron-cloud effects at future accelerators.
Highlights
Calculation of the synchrotron radiation flux within an accelerator vacuum chamber is important for a number of applications
The data for this model was obtained from a Lawrence Berkeley National Laboratory (LBNL) x-ray scattering database [15]
Synrad3D can handle a wide variety of vacuum chamber profiles with varying surface properties
Summary
Calculation of the synchrotron radiation flux within an accelerator vacuum chamber is important for a number of applications. Understanding the evolution of the electron cloud and its effect on the beam requires a detailed understanding of where the photoelectrons are created. This is true since electrons will tend to follow the local magnetic field lines. Areas that do not have any direct radiation shining on them may still see a significant flux due to scattering. To this end, a program called Synrad3D [8] has been developed which simulates synchrotron radiation by tracking photons generated by a charged particle beam from birth through scattering—both specular and diffuse—in multiple wall encounters, to eventual absorption. VI, a detailed discussion of the derivation of the scattering model equations, and how they are used in Synrad3D, is presented in the Appendix
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