Enhancement of radiative energy extraction in an FEL oscillator by post-saturation beam energy ramping

H. S. Marks, A. Gover, Yu Lurie, E. Dyunin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

We present results of experiments and simulations showing a greater than 50% increase in post-saturation radiation power extraction from a Free Electron Laser oscillator based on an electrostatic accelerator. Electrostatic accelerator free electron laser oscillators have the potential for CW operation. Present day operating oscillators rely on long pulses of electrons, tens of microseconds in duration, they generate correspondingly long radiation pulses, at a single longitudinal mode after a mode competition process. The post-saturation power extraction enhancement process is based on temporal tapering (up-ramping) of the beam energy, enabling a large synchrotron oscillation swing of the trapped electron bunches in passage along the interaction length. We further discuss the theoretical limits of the temporal tapering efficiency enhancement process.

Original languageEnglish
Title of host publicationProceedings of the 38th International Free-Electron Laser Conference, FEL 2017
EditorsKip Bishofberger, Carlsten Bruce, Volker RW Schaa
PublisherJACoW Publishing
Pages244-246
Number of pages3
ISBN (Electronic)9783954501793
DOIs
StatePublished - 2017
Event38th International Free-Electron Laser Conference, FEL 2017 - Santa Fe, United States
Duration: 20 Aug 201725 Aug 2017

Publication series

NameProceedings of the 38th International Free-Electron Laser Conference, FEL 2017

Conference

Conference38th International Free-Electron Laser Conference, FEL 2017
Country/TerritoryUnited States
CitySanta Fe
Period20/08/1725/08/17

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