Gamma-Ray Production from Resonant Betatron Oscillations of Accelerated Electrons in a Plasma Wakes

Cipiccia, S. et al. (2015) Gamma-Ray Production from Resonant Betatron Oscillations of Accelerated Electrons in a Plasma Wakes. In: Advances in X-ray Free-Electron Lasers Instrumentation III, Prague, Czech Republic, 13 Apr 2015, 95121A. (doi:10.1117/12.2181566)

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Abstract

The laser-plasma wakefield accelerator is a novel ultra-compact particle accelerator. A very intense laser pulse focused onto plasma can excites plasma density waves. Electrons surfing these waves can be accelerated to very high energies with unprecedented accelerating gradients in excess of 1 GV/cm. While accelerating, electrons undergo transverse betatron oscillations and emit synchrotron-like x-ray radiation into a narrow on-axis cone, which is enhanced when electrons interact with the electromagnetic field of the laser. In this case, the laser can resonantly drive the electron motion, lading to direct laser acceleration. This occurs when the betatron frequency matches the Doppler down-shifted frequency of the laser. As a consequence, the number of photons emitted is strongly enhanced and the critical photon energy is increases to 100’s of keV.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Maneuski, Dr Dzmitry and Hoek, Mr Matthias and Smith, Mr Gordon and Shanks, Dr Richard and O'Shea, Professor Valentine and Montgomery, Dr Rachel and Hamilton, Dr David
Authors: Cipiccia, S., Islam, M.R., Ersfeld, B., Welsh, G.H., Brunetti, E., Vieux, G., Yang, X., Wiggins, S.M., Grant, P., Reboredo Gil, D., Grant, D.W., Shanks, R.P., Issac, R.C., Anania, M.P., Maneuski, D., Montgomery, R., Smith, G., Hoek, M., Hamilton, D., Symes, D., Rajeev, P.P., O'Shea, V., Dias, J.M., Lemos, N.R., and Jaroszynski, D.A.
College/School:College of Science and Engineering > School of Physics and Astronomy
College of Science and Engineering > Scottish Universities Environmental Research Centre
ISSN:0277-786X

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
592571CRITICAL MASS: Collective radiation-beam-plasma interactions at high intensitiesValentine O'SheaEngineering & Physical Sciences Research Council (EPSRC)EP/J018171/1P&A - PHYSICS & ASTRONOMY