Worldwide First EEHG Signal at a Storage Ring
is the first and presently the only storage ring worldwide at which EEHG has been implemented. In summer 2022, the undulator U250, which consists of alternately poled electromagnets, was rewired to create [...] radiation in the terahertz range [11]. After initial success, extensive repairs were required in 2023. In summer 2024, finally, EEHG radiation pulses were successfully detected at wavelengths 160 nm and 114 nm …
