Abstract
Laser-Compton scattering (LCS) experiments were carried out at the Idaho Accelerator Center using the 5 ns (FWHM) and 22 MeV electron beam. The electron beam was brought to an approximate head-on collision with a 29 MW, 7 ns (FWHM), 10 Hz Nd:YAG laser. Clear and narrow x-ray peaks resulting from the interaction of relativistic electrons with the Nd:YAG laser second harmonic line at 532 nm were observed. We have developed a relatively new method of using LCS as a nonintercepting electron beam monitor. Our method focused on the variation of the shape of the LCS spectrum rather than the LCS intensity as a function of the observation angle in order to extract the electron beam parameters at the interaction region. The electron beam parameters were determined by making simultaneous fits to spectra taken across the LCS x-ray cone. This scan method allowed us also to determine the variation of LCS x-ray peak energies and spectral widths as a function of the detector angles. Experimental data show that in addition to being viewed as a potential bright, tunable, and quasimonochromatic x-ray source, LCS can provide important information on the electron beam pulse length, direction, energy, angular and energy spread. Since the quality of LCS x-ray peaks, such as degree of monochromaticity, peak energy and flux, depends strongly on the electron beam parameters, LCS can therefore be viewed as an important nondestructive tool for electron beam diagnostics.
Highlights
Laser-Compton scattering (LCS) x rays are generated when a high-energy electron beam interacts with laser photons; the electrons scatter the low energy photons to higher energy at the expense of the electrons kinetic energy
Since the quality of LCS x-ray peaks, such as degree of monochromaticity, peak energy and flux, depends strongly on the electron beam parameters, LCS can be viewed as an important nondestructive tool for electron beam diagnostics
Though LCS has been proven to be a useful x-ray source for medical imaging [5], the properties LCS x rays are strongly dependent on the electron beam parameters, and LCS can be viewed as a nonintercepting electron beam monitor [6,7]
Summary
Laser-Compton scattering (LCS) x rays are generated when a high-energy electron beam interacts with laser photons; the electrons scatter the low energy photons to higher energy at the expense of the electrons kinetic energy. Though LCS has been proven to be a useful x-ray source for medical imaging [5], the properties LCS x rays are strongly dependent on the electron beam parameters, and LCS can be viewed as a nonintercepting electron beam monitor [6,7]. The goal of this experiment described in this paper is to use LCS as a nondestructive electron beam diagnostic tool in order determine several electron beam parameters such as the electron beam energy, energy spread, beam divergence, and electron beam direction.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physical Review Special Topics - Accelerators and Beams
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
