Author: Lechner, C.
Paper Title Page
TUOBB3 HORIZON 2020 EuPRAXIA Design Study 1265
 
  • P.A. Walker, R.W. Aßmann, J. Bödewadt, R. Brinkmann, J. Dale, U. Dorda, A. Ferran Pousa, A.F. Habib, T. Heinemann, O. S. Kononenko, C. Lechner, B. Marchetti, A. Martinez de la Ossa, T.J. Mehrling, P. Niknejadi, J. Osterhoff, K. Poder, E.N. Svystun, G.E. Tauscher, M.K. Weikum, J. Zhu
    DESY, Hamburg, Germany
  • D. Alesini, M.P. Anania, F.G. Bisesto, E. Chiadroni, M. Croia, M. Ferrario, F. Filippi, A. Gallo, A. Mostacci, R. Pompili, S. Romeo, J. Scifo, C. Vaccarezza, F. Villa
    INFN/LNF, Frascati (Roma), Italy
  • A.S. Alexandrova, R.B. Fiorito, C.P. Welsch, J. Wolfenden
    The University of Liverpool, Liverpool, United Kingdom
  • A.S. Alexandrova, R.B. Fiorito, C.P. Welsch, J. Wolfenden
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • N.E. Andreev, D. Pugacheva
    JIHT RAS, Moscow, Russia
  • T. Audet, B. Cros, G. Maynard
    CNRS LPGP Univ Paris Sud, Orsay, France
  • A. Bacci, D. Giove, V. Petrillo, A.R. Rossi, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • I.F. Barna, M.A. Pocsai
    Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Budapest, Hungary
  • A. Beaton, P. Delinikolas, B. Hidding, D.A. Jaroszynski, F.Y. Li, G.G. Manahan, P. Scherkl, Z.M. Sheng, M.K. Weikum
    USTRAT/SUPA, Glasgow, United Kingdom
  • A. Beck, A. Specka
    LLR, Palaiseau, France
  • A. Beluze, M. Mathieu, D.N. Papadopoulos
    LULI, Palaiseau, France
  • A. Bernhard, E. Bründermann, A.-S. Müller
    KIT, Karlsruhe, Germany
  • S. Bielawski
    PhLAM/CERLA, Villeneuve d'Ascq, France
  • F. Brandi, G. Bussolino, L.A. Gizzi, P. Koester, B. Patrizi, G. Toci, M. Vannini
    INO-CNR, Pisa, Italy
  • O. Bringer, A. Chancé, O. Delferrière, J. Fils, D. Garzella, P. Gastinel, X. Li, A. Mosnier, P.A.P. Nghiem, J. Schwindling, C. Simon
    CEA/IRFU, Gif-sur-Yvette, France
  • M. Büscher, A. Lehrach
    FZJ, Jülich, Germany
  • M. Chen, L. Yu
    Shanghai Jiao Tong University, Shanghai, People's Republic of China
  • A. Cianchi
    Università di Roma II Tor Vergata, Roma, Italy
  • J.A. Clarke, N. Thompson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • M.-E. Couprie
    SOLEIL, Gif-sur-Yvette, France
  • G. Dattoli, F. Nguyen
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • N. Delerue
    LAL, Orsay, France
  • J.M. Dias, R.A. Fonseca, J.L. Martins, L.O. Silva, U. Sinha, J. Vieira
    IPFN, Lisbon, Portugal
  • K. Ertel, M. Galimberti, R. Pattathil, D. Symes
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • J. Fils
    GSI, Darmstadt, Germany
  • A. Giribono
    INFN-Roma, Roma, Italy
  • L.A. Gizzi
    INFN-Pisa, Pisa, Italy
  • F.J. Grüner, A.R. Maier
    CFEL, Hamburg, Germany
  • F.J. Grüner, T. Heinemann, B. Hidding, O.S. Karger, A. Knetsch, A.R. Maier
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • C. Haefner
    LLNL, Livermore, California, USA
  • B.J. Holzer
    CERN, Geneva, Switzerland
  • S.M. Hooker
    University of Oxford, Clarendon Laboratory, Oxford, United Kingdom
  • S.M. Hooker, R. Walczak
    JAI, Oxford, United Kingdom
  • T. Hosokai
    Osaka University, Graduate School of Engineering, Osaka, Japan
  • C. Joshi
    UCLA, Los Angeles, California, USA
  • M. Kaluza
    HIJ, Jena, Germany
  • S. Karsch
    LMU, Garching, Germany
  • E. Khazanov, I. Kostyukov
    IAP/RAS, Nizhny Novgorod, Russia
  • D. Khikhlukha, D. Kocon, G. Korn, A.Y. Molodozhentsev, L. Pribyl
    ELI-BEAMS, Prague, Czech Republic
  • L. Labate, P. Tomassini
    CNR/IPP, Pisa, Italy
  • W. Leemans, C.B. Schroeder
    LBNL, Berkeley, California, USA
  • A. Lifschitz, V. Malka, F. Massimo
    LOA, Palaiseau, France
  • V. Litvinenko
    BNL, Upton, Long Island, New York, USA
  • V. Litvinenko
    Stony Brook University, Stony Brook, USA
  • W. Lu
    TUB, Beijing, People's Republic of China
  • V. Malka
    Ecole Polytechnique, Palaiseau, France
  • S. P. D. Mangles, Z. Najmudin, A. A. Sahai
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • A. Marocchino, A. Mostacci
    University of Rome La Sapienza, Rome, Italy
  • K. Masaki, Y. Sano
    JAEA/Kansai, Kyoto, Japan
  • U. Schramm
    HZDR, Dresden, Germany
  • M.J.V. Streeter, A.G.R. Thomas
    Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
  • C. Szwaj
    PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
  • C.-G. Wahlstrom
    Lund Institute of Technology (LTH), Lund University, Lund, Sweden
  • R. Walczak
    Oxford University, Physics Department, Oxford, Oxon, United Kingdom
  • G.X. Xia
    UMAN, Manchester, United Kingdom
  • M. Yabashi
    JASRI/SPring-8, Hyogo, Japan
  • A. Zigler
    The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem, Israel
 
  The Horizon 2020 Project EuPRAXIA ('European Plasma Research Accelerator with eXcellence In Applications') aims at producing a design report of a highly compact and cost-effective European facility with multi-GeV electron beams using plasma as the acceleration medium. The accelerator facility will be based on a laser and/or a beam driven plasma acceleration approach and will be used for photon science, high-energy physics (HEP) detector tests, and other applications such as compact X-ray sources for medical imaging or material processing. EuPRAXIA started in November 2015 and will deliver the design report in October 2019. EuPRAXIA aims to be included on the ESFRI roadmap in 2020.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUOBB3  
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WEPAB015 Parameter Optimization for Operation of sFLASH With Echo-Enabled Harmonic Generation 2592
 
  • J. Bödewadt, R.W. Aßmann, C. Lechner
    DESY, Hamburg, Germany
  • W. Hillert, T. Plath, J. Roßbach
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • S. Khan, N.M. Lockmann
    DELTA, Dortmund, Germany
 
  The free-electron laser facility FLASH has a dedicated experimental setup for external FEL seeding applications for the XUV and soft x-ray spectral range. Recently the setup is operated as high-gain harmonic generation FEL. Furthermore, it also allows the operation of echo-enabled harmonic generation (EEHG). A versatile laser injection system allows operation with seed wavelength in the infra-red, visible, and ultra-violet. Here, we present the parameter optimization for operating the seeding setup with EEHG. First experimental tests are planned in the first half of 2017.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB015  
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WEPAB016 Experience in Operating sFLASH With High-Gain Harmonic Generation 2596
 
  • J. Bödewadt, R.W. Aßmann, N. Ekanayake, B. Faatz, I. Hartl, T. Laarmann, C. Lechner, M.M. Mohammad Kazemi, A. Przystawik
    DESY, Hamburg, Germany
  • Ph. Amstutz, A. Azima, M. Drescher, W. Hillert, L.L. Lazzarino, Th. Maltezopoulos, V. Miltchev, T. Plath, J. Roßbach
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • K.E. Hacker, S. Khan, N.M. Lockmann, R. Molo
    DELTA, Dortmund, Germany
 
  sFLASH, the experimental setup for external seeding of free-electron lasers (FEL) at FLASH, has been operated in the high-gain harmonic generation (HGHG) mode. A detailed characterization of the laser-induced energy modulation, as well as the temporal characterization of the seeded FEL pulses is possible by using a transverse deflecting structure and an electron spectrometer. FEL saturation was reached for the 7th harmonic of the 266 nm seed laser. In this contribution, we present the latest experimental results.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB016  
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WEPAB019 Concept for a Seeded FEL at FLASH2 2607
 
  • C. Lechner, R.W. Aßmann, J. Bödewadt, M. Dohlus, N. Ekanayake, B. Faatz, G. Feng, I. Hartl, T. Laarmann, T. Lang, L. Winkelmann, I. Zagorodnov
    DESY, Hamburg, Germany
  • A. Azima, M. Drescher, Th. Maltezopoulos, T. Plath, J. Roßbach, W. Wurth
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • S. Khan
    DELTA, Dortmund, Germany
 
  The free-electron laser (FEL) FLASH is a user facility delivering photon pulses down to 4 nm wavelength. Recently, the second FEL undulator beamline 'FLASH2' was added to the facility. Operating in self-amplified spontaneous emission (SASE) mode, the exponential amplification process is initiated by shot noise of the electron bunch, resulting in photon pulses of limited temporal coherence. In seeded FELs, the FEL process is initiated by coherent seed radiation, improving the longitudinal coherence of the generated photon pulses. The conceptual design of a possible seeding option for the FLASH2 beamline foresees the installation of the hardware needed for high-gain harmonic generation (HGHG) seeding upstream of the already existing undulator system. In this contribution, we present the beamline design and numerical simulations of the seeded FEL.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB019  
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WEPVA006 A Concept for Phase-Synchronous Acceleration of Microbunch Trains in DLA Structures at SINBAD 3260
 
  • F. Mayet, R.W. Aßmann, J. Bödewadt, R. Brinkmann, U. Dorda, W. Kuropka, C. Lechner, B. Marchetti, J. Zhu
    DESY, Hamburg, Germany
  • W. Kuropka, F. Mayet
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • J. Zhu
    University of Hamburg, Hamburg, Germany
 
  Funding: GBMF - Gordon and Betty Moore Foundation
The concept of dielectric laser accelerators (DLA) has gained increasing attention in accelerator research, because of the high achievable acceleration gradients (~GeV/m). This is due to the high damage threshold of dielectrics at optical frequencies. In the context of the Accelerator on a Chip International Program (ACHIP) we plan to inject electron bunches into a laser-illuminated dielectric grating structure. At a laser wavelength of 2 micro-meter the accelerating bucket is <1.5 fs. This requires both ultra-short bunches and highly stable laser to electron phase. We propose a scheme with intrinsic laser to electron synchronization and describe a possible implementation at the SINBAD facility (DESY). Prior to injection, the electron bunch is conditioned by interaction with an external laser field in an undulator. This generates a sinusoidal energy modulation that is transformed into periodic microbunches in a subsequent chicane. The phase synchronization is achieved by driving both the modulation process and the DLA with the same laser pulse. This allows scanning the electron bunch to laser phase and will show the dependence of the acceleration process on this delay.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA006  
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