The generation and use of THz radiation for electron acceleration and manipulation of electron bunches has progressedover the last decade to a level where practical devices for THz guns, acceleration and a wide range of beam manipulationshave become possible. Here, we present our progress on generation of single-cycle THz pulses at the two-hundred micro-Joule level to drive advanced acceleration and beam manipulation devices. Specifically, we use pulses centered at 0.3 THzto power a segmented terahertz electron accelerator and manipulator (STEAM) capable of performing multiple high-fieldoperations on the 6D-phase-space of ultrashort electron bunches. Using this STEAM device, we demonstrate record THzaccelerationof >60 keV, streaking with <10 fs resolution, focusing with >2 kT/m strength, compression to ～100 fs as wellas real-time switching between these modes of operation. The STEAM device demonstrates the feasibility of THz-basedelectron accelerators, manipulators and diagnostic tools enabling science beyond current resolution frontiers withtransformative impact.
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