A method of determining narrow energy spread electron beams from a laser plasma wakefield accelerator using undulator radiation
- Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow G4 0NG (United Kingdom)
- Institut fuer Optik und Quantenelektronik, Friedrich-Schiller-Universitaet, 07743 Jena (Germany)
- Germany
- Laser Research Institute, University of Stellenbosch, 7602 Matieland (South Africa)
In this paper a new method of determining the energy spread of a relativistic electron beam from a laser-driven plasma wakefield accelerator by measuring radiation from an undulator is presented. This could be used to determine the beam characteristics of multi-GeV accelerators where conventional spectrometers are very large and cumbersome. Simultaneous measurement of the energy spectra of electrons from the wakefield accelerator in the 55-70 MeV range and the radiation spectra in the wavelength range of 700-900 nm of synchrotron radiation emitted from a 50 period undulator confirm a narrow energy spread for electrons accelerated over the dephasing distance where beam loading leads to energy compression. Measured energy spreads of less than 1% indicates the potential of using a wakefield accelerator as a driver of future compact and brilliant ultrashort pulse synchrotron sources and free-electron lasers that require high peak brightness beams.
- OSTI ID:
- 21282115
- Journal Information:
- Physics of Plasmas, Vol. 16, Issue 9; Other Information: DOI: 10.1063/1.3216549; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
High flux femtosecond x-ray emission from the electron-hose instability in laser wakefield accelerators
Measurement of the Betatron Radiation Spectrum Coming From a Laser Wakefield Accelerator