期刊
PHYSICS OF PLASMAS
卷 16, 期 9, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3216549
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资金
- Deutsche Forschungsgemeinschaft [TR18]
- EU [RII3-CT-2003-506350]
- Research Councils UK
- EU EuroLEAP NEST [028514]
- Engineering and Physical Sciences Research Council [EP/E001815/1] Funding Source: researchfish
- EPSRC [EP/E001815/1] Funding Source: UKRI
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. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3216549]
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