High-field high-repetition-rate prototype user facility for the coherent THz control of matter

A new class of accelerator based terahertz user facilities is presented in this paper. The prototype facility operates two superradiant THz sources in parallel providing simultaneously single cycle and multicycle THz pulses with an unprecedented combination of high field and high repetition rate. The THz generation is based on superradiant enhancement of radiation generated by relativistic electron bunches from a compact SRF technology-based MeV level electron accelerator. The currently achieved peak performance yields 2 uJ pulse energy at 100 kHz repetition rate. However, pulse energy and repetition rates are highly scalable and once fully operational the prototype facility will routinely provide up to 100 uJ energies at repetition rates of few 100 kHz.