BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Geoff Krafft \, JLAB\, Accelerator Division\n\n
Compton famo usly studied frequency shifts in the scattering of electromagnetic radiati on in his Noble-prizewinning work. The so-called Compton effect p rovided one of the earliest experimental verifications of the existence of separate\, individual photons in beams of electromagnetic radiation. Rece ntly\, prodded by the desire to construct intense narrowband sources of x- rays or gamma rays\, photon sources based on the scattering of laser radia tion from relativistic electron beams have been built and operated. Most p resent devices operate in regimes where linear (first order QED) calculati ons of the spectrum of the scattered radiation apply. In the future\, howe ver\, when more intense lasers are available\, non-linear Compton scatteri ng obtains. A group at Old Dominion University has developed new methods a llowing this more general case to be calculated precisely. After reviewing spectrum calculations in the context of some existing and contemplated Co mpton Sources\, several new predictions involving non-linear Compton scatt ering will be presented. In particular\, we have demonstrated through calc ulation that proposed performance enhancements in Compton sources by frequ ency chirping extend to the highest harmonics emitted from the source and are remarkably insensitive to being degraded by electron beam thermal effe cts.
\n DTSTART:20211012T193000Z LOCATION:Online\, Room via Zoom SUMMARY:Scattered Spectra from Non-linear Compton Effect END:VEVENT END:VCALENDAR