MOC —  New Lasing & Status of Projects I   (21-Aug-17   11:10—12:10)
Chair: B.E. Carlsten, LANL, Los Alamos, New Mexico, USA
Paper Title Page
0.1-nm FEL Lasing of PAL-XFEL  
  • H.-S. Kang, H. Heo, C. Kim, G. Kim, C.-K. Min, H. Yang
    PAL, Pohang, Kyungbuk, Republic of Korea
  The hard X-ray free electron laser at Pohang Accelerator Laboratory (PAL-XFEL) achieved saturation of a 0.144-nm free electron laser (FEL) beam on November 27, 2016, making it the third hard X-ray FEL in the world, following LCLS in 2009 and SACLA in 2011. On February 2, 2017, a saturated 1.52-nm FEL beam was also achieved in the soft X-ray FEL line with an electron beam energy of 3.0 GeV. Finally, saturation of a 0.104-nm FEL beam was achieved on March 16, 2017 using an electron beam energy of 9.47 GeV and K = 1.87. In this paper we present the commissioning result of PAL-XFEL as well as the beamline commissioning results.  
slides icon Slides MOC01 [7.016 MB]  
First Lasing and Commissioning Status of SwissFEL  
  • S. Reiche
    PSI, Villigen PSI, Switzerland
  The Swiss FEL commissioning has started in 2016 to achieve lasing in the hard X-ray beamline Aramis with an electron beam energy up to 5.8 GeV. This talk gives a brief status of SwissFEL, first lasing results and the upcoming commissioning tasks in the future, including the second, soft X-ray beamline Athos in 2021.  
MOC03 Commissioning and First Lasing of the European XFEL 1
  • H. Weise, W. Decking
    DESY, Hamburg, Germany
  Funding: Work supported by the respective funding agencies of the contributing institutes; for details please see
The European X-ray Free-Electron Laser (XFEL) in Hamburg, Northern Germany, aims at producing X-rays in the range from 260 eV to 24 keV out of three undulators that can be operated simultaneously with up to 27,000 pulses per second. The XFEL is driven by a 17.5 GeV superconducting linac. This linac is the worldwide largest installation based on superconducting radio-frequency acceleration. The design is using the so-called TESLA technology which was developed for the superconducting version of an international electron positron linear collider. After eight years of construction the facility is now brought into operation. First lasing was demonstrated in May 2017. Experience with the super-conducting accelerator as well as beam commissioning results will be presented. The path to the first user experiments will be laid down.
Status of Dalian Coherent Light Source  
  • W.Q. Zhang, D.X. Dai, G.L. Wang, G.R. Wu, X.M. Yang
    DICP, Dalian, People's Republic of China
  • S. Chen, C. Feng, D. Wang, M. Zhang, Z.T. Zhao
    SINAP, Shanghai, People's Republic of China
  Funding: DCLS is a joint project of Dalian Institute of Chemical Physics (DICP) and Shanghai Institute of Applied Physics (SINAP), CAS. It is supported by National Natural Science Foundation of China (21127902)
A Free Electron Laser with high brightness, ultrafast laser pulses in the vacuum ultraviolet (VUV) wavelength region is an ideal light source for excitation of valence electrons and ionization of molecular systems with very high efficiency. it is quite helpful for studies of important dynamic processes in physical, chemical and biological systems. Dalian Coherent Light Source (DCLS) plans to deliver optical beam from 50-150nm in picoseconds or 100 femtoseconds for such research. High gain harmonic generation is the perfect choice in VUV FEL for narrow bandwidth, stable power and low cost due to fewer undulators. After eight months of installation and machine commissioning, a 300-MeV electron beam was achieved with peak current of more than 300A, and the emittance was less than 1.5 mm.mrad. The FEL power for individual pulse at 133nm approached more than 200uJ with 266nm seed laser on Jan. 2017. The gain curve and spectrum of HGHG & SASE FEL was measured, and tapering undulator helps increase the power by almost 100% when the FEL output saturated. The user experiment will start on June 2017. It is open for good proposals from the whole world.