Speaker
Description
We present recent progress on a terahertz streaking diagnostic for ultrashort relativistic electron bunches at the UCLA Pegasus Laboratory. Single-cycle, ~50 µJ THz pulses centered at 0.4 THz are coupled into metallic structures to enhance field strengths to several hundred MV/m and shape the boundary conditions for a strong longitudinal streaking gradient. A long initial bunch emitted from the photocathode is compressed to a few femtoseconds using a multi-frequency RF photoinjector system with X-band linearization to flatten the longitudinal phase space curvature introduced by the S-band linac. This enables femtosecond-resolution, single-shot measurements of MeV-scale electron bunches using THz streaking, with applications in advanced beam diagnostics and ultrafast science.
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