First Lasing
Paper Title Page
MOA02 First Lasing of a Free Electron Laser in the Soft X-Ray Spectral Range with Echo Enabled Harmonic Generation 7
 
  • E. Allaria, A. Abrami, L. Badano, M. Bossi, N. Bruchon, F. Capotondi, D. Castronovo, M. Cautero, P. Cinquegrana, M. Coreno, I. Cudin, M.B. Danailov, G. De Ninno, A.A. Demidovich, S. Di Mitri, B. Diviacco, W.M. Fawley, M. Ferianis, L. Foglia, G. Gaio, F. Giacuzzo, L. Giannessi, S. Grulja, F. Iazzourene, G. Kurdi, M. Lonza, N. Mahne, M. Malvestuto, M. Manfredda, C. Masciovecchio, N.S. Mirian, I. Nikolov, G. Penco, E. Principi, L. Raimondi, P. Rebernik Ribič, R. Sauro, C. Scafuri, P. Sigalotti, S. Spampinati, C. Spezzani, L. Sturari, M. Svandrlik, M. Trovò, M. Veronese, D. Vivoda, M. Zaccaria, D. Zangrando, M. Zangrando
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • H.-H. Braun, E. Ferrari, E. Prat, S. Reiche
    PSI, Villigen PSI, Switzerland
  • N. Bruchon
    University of Trieste, Trieste, Italy
  • M. Coreno
    CNR-ISM, Trieste, Italy
  • M.-E. Couprie, A. Ghaith
    SOLEIL, Gif-sur-Yvette, France
  • G. De Ninno
    University of Nova Gorica, Nova Gorica, Slovenia
  • C. Feng
    SARI-CAS, Pudong, Shanghai, People’s Republic of China
  • F. Frassetto, L.P. Poletto
    LUXOR, Padova, Italy
  • D. Garzella
    CEA, Gif-sur-Yvette, France
  • V. Grattoni
    DESY, Hamburg, Germany
  • E. Hemsing
    SLAC, Menlo Park, California, USA
  • P. Miotti
    CNR-IFN, Padova, Italy
  • G. Penn
    LBNL, Berkeley, California, USA
  • M.A. Pop
    MAX IV Laboratory, Lund University, Lund, Sweden
  • E. Roussel
    PhLAM/CERCLA, Villeneuve d’Ascq Cedex, France
  • T. Tanikawa
    EuXFEL, Schenefeld, Germany
  • D. Xiang
    Shanghai Jiao Tong University, Shanghai, People’s Republic of China
 
  We report on the successful operation of a Free Electron Laser (FEL) in the Echo Enabled Harmonic Generation (EEHG) scheme at the FERMI facility at Sincrotrone Trieste. The experiment required a modification of the FEL-2 undulator line which, in normal operation, uses two stages of high-gain harmonic generation separated by a delay line. In addition to a new seed laser, the dispersion in the delay-line was increased, the second stage modulator changed and a new manipulator installed in the delay-line chicane hosting additional diagnostic components. With this modified setup we have demonstrated the first evidence of strong exponential gain in a free electron laser operated in EEHG mode at wavelengths as short as 5 nm.  
slides icon Slides MOA02 [5.133 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2019-MOA02  
About • paper received ※ 21 August 2019       paper accepted ※ 28 August 2019       issue date ※ 05 November 2019  
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MOA03 First Lasing at the CAEP THz FEL Facility 11
 
  • P. Li, T.H. He, M. Li, J. Liu, X. Luo, Q. Pan, L.J. Shan, X. Shen, H. Wang, J. Wang, D. Wu, D.X. Xiao, Y. Xu, L.G. Yan, P. Zhang, K. Zhou
    CAEP/IAE, Mianyang, Sichuan, People’s Republic of China
  • Y. Liu
    CAEP/IFP, Mainyang, Sichuan, People’s Republic of China
 
  China Academy of Engineering Physics terahertz free electron laser (CAEP THz FEL, CTFEL) is the first THz FEL user facility in China, which was an oscillator type FEL. This THz FEL facility consists of a GaAs photocathode high-voltage DC gun, a superconducting RF linac, a planar undulator and a quasi-concentric optical resonator. The terahertz laser’s frequency is continuous adjustable from 0.7 THz to 4.2 THz. The average power is more than 10 W and the micro-pulse power is more than 0.3 MW. In this paper, the specific parameters and operation status of CTFEL are presented. Finally, some user experiments are introduced briefly.  
slides icon Slides MOA03 [3.771 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2019-MOA03  
About • paper received ※ 20 August 2019       paper accepted ※ 18 September 2019       issue date ※ 05 November 2019  
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MOA04
First Lasing at the SASE2 and SASE3 FELs of European XFEL  
 
  • M. Scholz
    DESY, Hamburg, Germany
 
  The European XFEL includes three Free Electron Lasers. We report on the first lasing at the soft X-ray SASE FEL SASE3 in February 2018 and at the second hard X-Ray SASE FEL SASE2 in May 2018.  
slides icon Slides MOA04 [7.499 MB]  
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MOA05
First Lasing at SXFEL  
 
  • Z.T. Zhao, M. Gu, Q. Gu, Y.B. Leng
    SSRF, Shanghai, People’s Republic of China
  • H.X. Deng, B. Liu, D. Wang
    SARI-CAS, Pudong, Shanghai, People’s Republic of China
  • G.P. Fang, L. Yin, M. Zhang
    SINAP, Shanghai, People’s Republic of China
 
  Shanghai soft X-ray free-electron laser (SXFEL) started its construction in December of 2014. After years of effort, first lasing at 8.8 nm with designed cascading mode is finally achieved in 2019. The commissioning progress and recent results will be reported.  
slides icon Slides MOA05 [9.952 MB]  
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MOA06
Commissioning of CW FEL Amplifier for Coherent Electron Cooler  
 
  • V. Litvinenko
    BNL, Upton, New York, USA
 
  V.N.Litvinenko for CeC team An FEL-based Coherent electron Cooling (CeC) has a potential to significantly boosting luminosity of high-energy, high-intensity hadron-hadron and electron-hadron colliders. In a CeC system, a hadron beam interaction with a cooling electron beam is amplified using a high gain FEL. In contrast with the typical FEL applications, the CeC needs a linear amplifier, e.g. the FEL has to be operating in a linear regime without saturation. The CeC FEL is comprised of three helical wigglers and is driven by 14.5 MeV electron beam from CW SRF accelerator. In this talk we present results of successful commissioning of such FEL amplifier.  
slides icon Slides MOA06 [7.129 MB]  
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MOA07 Commissioning and First Lasing of the FELiChEM: A New IR and THz FEL Oscillator in China 15
 
  • H.T. Li, Q.K. Jia
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
 
  A new infrared FEL named FELiChEM aiming at the energy chemistry has been constructed and commissioned at NSRL in Hefei. It consists of two FEL oscillators driven by one normal-conducting S-Band linac with maximum beam energy of 60 MeV. The two oscillators generate the midinfrared and far-infrared lasers covering the spectral range of 2.5-50 µm and 40-200 µm, respectively. First lasing was achieved at a wavelength of 15 µm with an electron energy of 35 MeV. Till now, we have observed the FEL signal from 3.5 µm to 30 µm and achieved the maximum micropulse energy up to 27 µJ at 15 µm.  
slides icon Slides MOA07 [2.434 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2019-MOA07  
About • paper received ※ 20 August 2019       paper accepted ※ 28 August 2019       issue date ※ 05 November 2019  
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