Nondipolarity of axial channeling radiation at GeV beam energies

• Main Authors: W. Wagner, A. A. Savchenko, B. Azadegan, M. Shafiee
• Format: Article
• Language: English
• Published: American Physical Society 2019-05-01
• Series: Physical Review Accelerators and Beams
• Online Access: http://doi.org/10.1103/PhysRevAccelBeams.22.054502

We consider the nondipolarity of axial channeling radiation generated in a tungsten single crystal at electron-beam energies of several GeV. The calculations are based on the realistic axial continuous potential. It could be shown that, compared to the dipole approximation, the nondipole approximation results in a considerable variation of the channeling radiation spectrum. In a simulation of positron production via conversion of γ radiation into e^{+}e^{−} pairs, the observed effect may play an important role.