THz radiation as a bunch diagnostic forlaser-wakefield-accelerated electron bunches [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Experimental results are reported from two measurement techniques (semiconductor switching and electro-optic sampling) that allow temporal characterization of electron bunches produced by a laser-driven plasma-based accelerator. As femtosecond electron bunches exit the plasma-vacuum interface, coherent transition radiation (at THzfrequencies) is emitted. Measuring the properties of this radiation allows characterization of the electron bunches. Theoretical work on the emission mechanism is represented, including a model that calculates theTHz waveform from a given bunch profile. It is found that the spectrum of the THz pulse is coherent up to the 200 mu m thick crystal (ZnTe) detection limit of 4 THz, which corresponds to the production of sub-50fs (root-mean-square) electron bunch structure. The measurements demonstrate both the shot-to-shot stability of bunch parameters that are critical to THz emission (such as total charge and bunch length), as well as femtosecond synchrotron between bunch, THz pulse, and laser beam.
- Report Numbers:
- E 1.99:lbnl--60017
- Other Subject(s):
- Published through SciTech Connect.
Physics of Plasmas 13 (5) 13 5 ISSN 1070-664X; PHPAEN FT
Schroeder, C.B.; Geddes,C.G.R.; Esarey, E.; Leemans, W.P.; Filip, C.V.; Fubiani, G.; van Tilborg, J.; Toth, Cs.
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Funding Information:
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