JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@unpublished{henstridge:fls2023-we2a3,
author = {M. Henstridge and A.S. Fisher and M.C. Hoffmann and Z. Huang},
title = {{A Wiggler-based THz Source at LCLS-II and Studies for a 150-m THz Transport Line for Pump-probe Experiments}},
% booktitle = {Proc. FLS'23},
booktitle = {Proc. ICFA Adv. Beam Dyn. Workshop (FLS'23)},
eventdate = {2023-08-27/2023-09-01},
language = {english},
intype = {presented at the},
series = {ICFA Advanced Beam Dynamics Workshop},
number = {67},
venue = {Luzern, Switzerland},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {01},
year = {2024},
note = {presented at FLS'23 in Luzern, Switzerland, unpublished},
abstract = {{Ultrafast THz pulses with energies of several µJ drive exotic non-equilibrium phenomena in complex materials, yet many of the underlying microscopic mechanisms remain unknown. Current strong-field THz sources rely mostly on difference-frequency mixing of near-infrared laser pulses in crystals at few-kHz repetition rates, but the extension of such sources to higher repetition rates suffers from reduced pulse energies and crystal damage. Here, we present a wiggler-based THz scheme capable of delivering 3-30 THz pulses with energies of 100 µJ at the 100 kHz rate supported by LCLS-II. Two time-delayed electron bunches independently drive the wiggler and x-ray undulator to generate precisely synchronized and optimized x-ray and THz pulses for pump-probe experiments. We built a model transport line to address the significant challenge of transporting the THz emission over the minimum 150-m distance necessary to reach the experimental halls. This concept, scaled to 12-m, has been tested with the 28 THz output of a CO₂ laser. Results indicate that the THz emission can be transported over 150-m with an efficiency near 90\%. Further testing is underway at 3.5 THz with a quantum-cascade laser.}},
}