DOE OSTI · 2575490
First high peak and average power single-pass THz free-electron laser in operation
Abstract
We report on the operation of the first high peak and average power single-pass terahertz free-electron laser (THz FEL) based on a high-brightness photoinjector for developing a THz source for pump-probe experiments at advanced x-ray FELs (XFELs). Electron beams with 17 MeV/c momentum and charge up to 2.4 nC were used to generate narrow-band 3 THz radiation with pulse energies of more than 0.1 mJ. The novelty of the realized method is that the undulator radiation by electron beams is much longer than the radiation wavelength, with FEL starting from coherent beam contribution rather than shot noise. This proved to be not a simple scaling of the XFEL mechanism due to the significant role of the bunching factor in the considered case.
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Krasilnikov, Mikhail [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)] (ORCID:0000000212784426), Aboulbanine, Zakaria [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Adhikari, Gowri [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Aftab, Namra [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Asoyan, Aida [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); CANDLE Synchrotron Research Institute (Armenia)], Boonpornprasert, Prach [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Davtyan, Hakob [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); CANDLE Synchrotron Research Institute (Armenia)], Georgiev, Georgi [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Good, James [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Grebinyk, Anna [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Gross, Matthias [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Hoffmann, Andreas [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Kongmon, Ekkachai [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Chiang Mai University (Thailand)], Li, Xiangkun [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Lueangaramwong, Anusorn [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Diamond Light Source Ltd (United Kingdom)], Melkumyan, David [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Mohanty, Sandeep [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Niemczyk, Raffael [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Helmholtz-Zentrum Dresden Rossendorf (Germany)], Oppelt, Anne [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Qian, Houjun [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Zhangjiang Lab (China)], Richard, Christopher [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Stephan, Frank [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Vashchenko, Grygorii [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Weilbach, Tobias [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Paul Scherrer Institute (Switzerland)], Zhang, Xiaoyang [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Tsinghua University (China)], Tischer, Markus [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Schneidmiller, Evgeny [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Vagin, Pavel [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Yurkov, Mikhail [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Zapolnova, Ekaterina [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)], Hillert, Wolfgang [University of Hamburg (Germany)], Rossbach, Jörg [University of Hamburg (Germany)], Brachmann, Axel [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Holtkamp, Norbert [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)], Nuhn, Heinz-Dieter [SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)]. 2025-03-12. First high peak and average power single-pass THz free-electron laser in operation. https://doi.org/10.1103/physrevaccelbeams.28.030701
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