Author: Szwaj, C.
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TUZZPLS1
 Control of the Micro-Bunching Instability in Storage Rings, Using Control of Chaos Strategy (Theory and Experiment)  
 
  • C. Evain, S. Bielawski, E. Roussel, C. Szwaj
    PhLAM/CERLA, Villeneuve d’Ascq, France
  • J.B. Brubach, N. Hubert, M. Labat, F. Ribeiro, P. Roy, M.-A. Tordeux
    SOLEIL, Gif-sur-Yvette, France
  • M. Le Parquier
    PhLAM/CERCLA, Villeneuve d’Ascq Cedex, France
  
  We present a new method, inspired by chaos control theory, to master the micro-bunching instability in storage rings *. This instability appears when the bunch current exceeds a threshold value, and is characterized by spontaneous (and usually irregular) apparition of micro-structures in the bunch. We show that a regular state (with regular apparition of micro-structures) can pre-exist in the system, but with unstable properties; and we demonstrate the possibility of stabilizing this state thanks to a low power feedback loop. As a consequence of this method, a modification of less than 0.3% in the system parameters permits to decrease by more than 40 dB the THz fluctuations at the synchrotron SOLEIL (while keeping the coherent emission).
* Coherent Terahertz synchrotron radiation mastered by controlling the irregular dynamics of relativistic electron bunches, C. Evain, et. al., arXiv:1810.11805 (2018)
 		 
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WEZPLS1 Control of Laser Plasma Accelerated Electrons: A Route for Compact Free Electron Lasers 2280
 
  • M.-E. Couprie, T. André, F. Blache, F. Bouvet, F. Briquez, Y. Dietrich, J.P. Duval, M. El Ajjouri, A. Ghaith, C. Herbeaux, N. Hubert, C.A. Kitegi, M. Labat, N. Leclercq, A. Lestrade, A. Loulergue, O. Marcouillé, F. Marteau, D. Oumbarek Espinos, P. Rommeluère, M. Sebdaoui, K.T. Tavakoli, M. Valléau
    SOLEIL, Gif-sur-Yvette, France
  • I.A. Andriyash, S. Corde, J. Gautier, J.-P. Goddet, O.S. Kononenko, G. Lambert, K. Ta Phuoc, A. Tafzi, C. Thaury
    LOA, Palaiseau, France
  • S. Bielawski, C. Evain, E. Roussel, C. Szwaj
    PhLAM/CERLA, Villeneuve d’Ascq, France
  • V. Malka
    Weizmann Institute of Science, Physics, Rehovot, Israel
  
  The recent spectacular development of laser plasma ac- celerators that now can deliver GeV electron beams in an extremelyshortdistancemakesthemverypromising. Ap- plications for light sources based on undulator radiation and free electron laser appear as an intermediate step to move from an acceleration concept to an accelerator qual- ification. However, the presently achieved divergence and energy spread require some electron beam manipulations. The COXINEL test line was designed for enabling Free Elec- tron Laser operation with baseline reference parameters. It comprises variable permanent magnet quadrupoles for di- vergence handling, a magnetic chicane for electron energy sorting, a second set of quadrupole for chromatic focusing and an undulator for synchrotron radiation emission and/or free electron laser gain medium. The transport along the line is controlled [1]. The synchrotron radiation emitted by the undulator radiation is studied under different conditions of detection (CCD camera, spectrometer), electron beam manipulation and undulator parameters. These observations pave the way towards Laser Plasma Acceleration based Free Electron Laser.

[1] T. André et al., Control of laser plasma accelerated electrons for light sources, accepted in Nature Comm.
 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEZPLS1  
About • paper received ※ 15 May 2019       paper accepted ※ 22 May 2019       issue date ※ 21 June 2019  
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THPGW026 Status of the Horizon 2020 EuPRAXIA Conceptual Design Study 3638
 
  • M.K. Weikum, A. Aschikhin, R.W. Aßmann, R. Brinkmann, U. Dorda, A. Ferran Pousa, T. Heinemann, F. Jafarinia, A. Knetsch, C. Lechner, W. Leemans, B. Marchetti, A. Martinez de la Ossa, P. Niknejadi, J. Osterhoff, K. Poder, R. Rossmanith, L. Schaper, E.N. Svystun, G.E. Tauscher, P.A. Walker, J. Zhu
    DESY, Hamburg, Germany
  • T. Akhter, S. De Nicola
    INFN-Napoli, Napoli, Italy
  • D. Alesini, M.P. Anania, F.G. Bisesto, E. Chiadroni, M. Croia, A. Del Dotto, M. Ferrario, F. Filippi, A. Gallo, A. Giribono, R. Pompili, S. Romeo, J. Scifo, C. Vaccarezza, F. Villa
    INFN/LNF, Frascati, Italy
  • A.S. Alexandrova, R. Torres, C.P. Welsch, J. Wolfenden
    The University of Liverpool, Liverpool, United Kingdom
  • A.S. Alexandrova, A. Beaton, J.A. Clarke, A.F. Habib, T. Heinemann, B. Hidding, P. Scherkl, N. Thompson, R. Torres, D. Ullmann, C.P. Welsch, S.M. Wiggins, J. Wolfenden, G.X. Xia
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • N.E. Andreev, D. Pugacheva
    JIHT RAS, Moscow, Russia
  • N.E. Andreev, D. Pugacheva
    MIPT, Dolgoprudniy, Moscow Region, Russia
  • I.A. Andriyash, M.-E. Couprie, A. Ghaith, D. Oumbarek Espinos
    SOLEIL, Gif-sur-Yvette, France
  • T. Audet, B. Cros, G. Maynard
    CNRS LPGP Univ Paris Sud, Orsay, France
  • A. Bacci, D. Giove, V. Petrillo, A.R. Rossi, L. Serafini
    INFN-Milano, Milano, Italy
  • I.F. Barna, M.A. Pocsai
    Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Budapest, Hungary
  • A. Beaton, A.F. Habib, T. Heinemann, B. Hidding, D.A. Jaroszynski, G.G. Manahan, P. Scherkl, Z.M. Sheng, D. Ullmann, S.M. Wiggins
    USTRAT/SUPA, Glasgow, United Kingdom
  • A. Beck, F. Massimo, A. Specka
    LLR, Palaiseau, France
  • A. Beluze, F. Mathieu, D.N. Papadopoulos
    LULI, Palaiseau, France
  • A. Bernhard, E. Bründermann, A.-S. Müller
    KIT, Karlsruhe, Germany
  • S. Bielawski, E. Roussel, C. Szwaj
    PhLAM/CERLA, Villeneuve d’Ascq, France
  • F. Brandi, G. Bussolino, L.A. Gizzi, P. Koester, L. Labate, B. Patrizi, G. Toci, P. Tomassini, M. Vannini
    INO-CNR, Pisa, Italy
  • M.H. Bussmann, A. Irman, U. Schramm
    HZDR, Dresden, Germany
  • M. Büscher, A. Lehrach
    FZJ, Jülich, Germany
  • A. Chancé, P.A.P. Nghiem, C. Simon
    CEA-IRFU, Gif-sur-Yvette, France
  • M. Chen, Z.M. Sheng
    Shanghai Jiao Tong University, Shanghai, People’s Republic of China
  • A. Cianchi
    Università di Roma II Tor Vergata, Roma, Italy
  • A. Cianchi
    INFN-Roma II, Roma, Italy
  • J.A. Clarke, N. Thompson
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • J. Cole, S.M. Hooker, M.J.V. Streeter, R. Walczak
    JAI, Oxford, United Kingdom
  • P.A. Crump, M. Huebner
    FBH, Berlin, Germany
  • G. Dattoli, F. Nguyen
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • N. Delerue, K. Wang
    LAL, Orsay, France
  • J.M. Dias, R.A. Fonseca, J.L. Martins, L.O. Silva, T. Silva, U. Sinha, J.M. Vieira
    IPFN, Lisbon, Portugal
  • R. Fedele, G. Fiore, D. Terzani
    UniNa, Napoli, Italy
  • A. Ferran Pousa, T. Heinemann, V. Libov
    University of Hamburg, Hamburg, Germany
  • M. Galimberti, P.D. Mason, R. Pattathil, D. Symes
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • L.A. Gizzi, L. Labate
    INFN-Pisa, Pisa, Italy
  • F.J. Grüner, A.R. Maier
    CFEL, Hamburg, Germany
  • F.J. Grüner, O.S. Karger, A.R. Maier
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • C. Haefner, C. Siders
    LLNL, Livermore, California, USA
  • B.J. Holzer
    CERN, Geneva, Switzerland
  • S.M. Hooker
    University of Oxford, Oxford, United Kingdom
  • T. Hosokai
    ISIR, Osaka, Japan
  • C. Joshi
    UCLA, Los Angeles, California, USA
  • M. Kaluza
    IOQ, Jena, Germany
  • M. Kaluza
    HIJ, Jena, Germany
  • M. Kando
    JAEA/Kansai, Kyoto, Japan
  • S. Karsch
    LMU, Garching, Germany
  • E. Khazanov, I. Kostyukov
    IAP/RAS, Nizhny Novgorod, Russia
  • D. Khikhlukha, D. Kocon, G. Korn, K.O. Kruchinin, A.Y. Molodozhentsev, L. Pribyl
    ELI-BEAMS, Prague, Czech Republic
  • O.S. Kononenko, A. Lifschitz
    LOA, Palaiseau, France
  • C. Le Blanc, Z. Mazzotta
    Ecole Polytechnique, Palaiseau, France
  • X. Li
    DESY Zeuthen, Zeuthen, Germany
  • 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
  • O. Lundh
    Lund University, Lund, Sweden
  • V. Malka
    Weizmann Institute of Science, Physics, Rehovot, Israel
  • S.P.D. Mangles, Z. Najmudin, A.A. Sahai
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • A. Mostacci
    INFN-Roma, Roma, Italy
  • A. Mostacci
    Sapienza University of Rome, Rome, Italy
  • C.D. Murphy
    York University, Heslington, York, United Kingdom
  • V. Petrillo
    Universita’ degli Studi di Milano, Milano, Italy
  • M. Rossetti Conti
    Universita’ degli Studi di Milano & INFN, Milano, Italy
  • G. Sarri
    Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
  • C.B. Schroeder
    LBNL, Berkeley, California, USA
  • 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
    RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
  • A. Zigler
    The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem, Israel
  
  Funding: This work was supported by the European Union’s Horizon 2020 Research and Innovation programme under grant agreement No. 653782.
The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accelerated using plasmas. EuPRAXIA will be set up as a distributed Open Innovation platform with two construction sites, one with a focus on beam-driven plasma acceleration (PWFA) and another site with a focus on laser-driven plasma acceleration (LWFA). User areas at both sites will provide access to FEL pilot experiments, positron generation and acceleration, compact radiation sources, and test beams for HEP detector development. Support centres in four different countries will complement the pan-European implementation of this infrastructure. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-THPGW026  
About • paper received ※ 26 April 2019       paper accepted ※ 20 May 2019       issue date ※ 21 June 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)