Speaker
Description
We present recent progress on a terahertz streaking diagnostic for ultrashort relativistic electron bunches at the UCLA Pegasus Laboratory. Single-cycle (~30 µJ) THz pulses centered at 0.5 THz are coupled into metallic structures, where field strengths are enhanced to several hundred MV/m and boundary conditions are tailored to produce a strong longitudinal streaking gradient. An initially long electron bunch emitted from the photocathode of an RF photoinjector is compressed in an S-band linac, generating femtosecond-scale current spikes within the longitudinal beam profile that are resolved using THz streaking. This approach enables single-shot measurements of MeV-scale electron bunches with femtosecond temporal resolution, with applications in advanced beam diagnostics and ultrafast science.
| Working group | WG5 |
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