Demonstration of Model-Independent Control of the Longitudinal Phase Space of Electron Beams in the Linac-Coherent Light Source with Femtosecond Resolution

Alexander Scheinker, Auralee Edelen, Dorian Bohler, Claudio Emma, and Alberto Lutman

Phys. Rev. Lett. 121, 044801 – Published 25 July 2018

Abstract

The dynamics of intense electron bunches in free electron lasers and plasma wakefield accelerators are dominated by complex collective effects such as wakefields, space charge, coherent synchrotron radiation, and drift unpredictably with time, making it difficult to control and tune beam properties using model-based approaches. We report on a first of its kind combination of automatic, model-independent feedback with a neural network for control of the longitudinal phase space of relativistic electron beams with femtosecond resolution based only on transverse deflecting cavity measurements.

Received 26 February 2018
Revised 5 June 2018

DOI:https://doi.org/10.1103/PhysRevLett.121.044801

Physics Subject Headings (PhySH)

Beam control High intensity beam dynamics

Accelerators & Beams

Authors & Affiliations

Alexander Scheinker^1,*, Auralee Edelen², Dorian Bohler², Claudio Emma², and Alberto Lutman²

¹Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA
²SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA