Dependence on laser intensity of the number-weighted angular distribution of Compton-scattered photon beams
Abstract
Inverse Compton scattering of an ultra-relativistic electron in the field of a high-intensity laser produces photon beams with angular and spectral distributions that are strongly dependent on the laser intensity. Here, we show that the laser intensity at the interaction point can be accurately inferred from the measurement of the angular number-density distribution of Compton-scattered photon beams. The theory, corroborated by numerical simulations, is accurate to within 10\% in a wide range of laser intensities (dimensionless intensity ) and electron energies (250 MeV 15 GeV), and accounts for experimental features such as the finite transverse size of the electron beam, low-energy cut-offs in the photon detector, and the possibility of a transverse misalignment between the electron beam and the laser focus.
Keywords
Cite
@article{arxiv.2402.03454,
title = {Dependence on laser intensity of the number-weighted angular distribution of Compton-scattered photon beams},
author = {K. Fleck and T. Blackburn and E. Gerstmayr and M. Bruschi and P. Grutta and M. Morandin and G. Sarri},
journal= {arXiv preprint arXiv:2402.03454},
year = {2024}
}
Comments
21 pages, 6 figures Updated: 26 pages, 7 figures Comment: Fixed typos and minor text corrections Comment: Improved discussion in section 4, results unchanged Comment: Included discussion of pair-production in section 4 with new figure, results unchanged Comment: Minor improvements to figures, results unchanged