A terahertz pump mega-electron-volt ultrafast electron diffraction probe apparatus at the SLAC Accelerator Structure Test Area facility

We describe a new experimental setup capable of measuring structural dynamics following intense terahertz excitation. This system, developed at the SLAC Accelerator Structure Test Area facility, uses a high-energy ultrafast laser to produce intense terahertz pulses and femtosecond electron bunches t...

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Bibliographic Details
Published in:Journal of instrumentation 2018-06, Vol.13 (6), p.P06014-P06014
Main Authors: Ofori-Okai, B.K., Hoffmann, M.C., Reid, A.H., Edstrom, S., Jobe, R.K., Li, R.K., Mannebach, E.M., Park, S.J., Polzin, W., Shen, X., Weathersby, S.P., Yang, J., Zheng, Q., Zajac, M., Lindenberg, A.M., Glenzer, S.H., Wang, X.J.
Format: Article
Language:English
Subjects:
Accelerator applications
Electric fields
Electron diffraction
Electrons
ENGINEERING
Imaging spectroscopy
Optics
PARTICLE ACCELERATORS
Ultrafast lasers
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Summary:We describe a new experimental setup capable of measuring structural dynamics following intense terahertz excitation. This system, developed at the SLAC Accelerator Structure Test Area facility, uses a high-energy ultrafast laser to produce intense terahertz pulses and femtosecond electron bunches that are accelerated to mega-electron-volt kinetic energies. The focused terahertz pulses have electric fields in excess of 600 kV/cm, and the resulting structural dynamics can be followed by electron diffraction. We also present some examples demonstrating its implementation where interactions between the THz pulses and the electron bunch are used to characterize the spatial and temporal characteristics of the THz field.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/13/06/P06014