Author: Couprie, M.-E.
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MOPRO051 SOLEIL Operation and On-going Projects 200
 
  • L.S. Nadolski, C. Benabderrahmane, P. Betinelli-Deck, F. Bouvet, P. Brunelle, A. Buteau, L. Cassinari, M.-E. Couprie, X. Delétoille, C. Herbeaux, N. Hubert, M. Labat, J.-F. Lamarre, P. Lebasque, A. Lestrade, A. Loulergue, P. Marchand, O. Marcouillé, J.L. Marlats, A. Nadji, R. Nagaoka, P. Prigent, J.P. Ricaud, M.-A. Tordeux
    SOLEIL, Gif-sur-Yvette, France
 
  The 2.75 GeV synchrotron light source SOLEIL delivers photons to 27 beamlines; 2 new ones are under construction together with the FEMTOSLICING project of which commissioning started in January 2014. Five filling patterns are available for the users in Top-up injection mode. The storage ring is running with an upgraded optics less sensitive to insertion device (ID) configurations and giving both better beam lifetime and injection efficiency. The beam position stability remains excellent with a focus on electron vertical beam-size stability for the new very long beamlines. A gating system during Top-up injection improves significantly the quality of the spectrum on an infrared beamline. Several heavy actions of maintenance and upgrades on crucial subsystem equipment are underway. Others accelerator projects are going on such as the design and construction of new IDs, new Multipole Injection Kicker, radiation damage studies as well as R&D on solid-state amplifiers.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO051  
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MOPRO054 Commissioning progress of the Femto-slicing Project at SOLEIL 206
 
  • M. Labat, H.B. Abualrob, P. Betinelli-Deck, A. Buteau, N. Béchu, L. Cassinari, M.-E. Couprie, F. Dohou, C. Herbeaux, Ph. Hollander, J.-F. Lamarre, C. Laulhé, A. Lestrade, J. Lüning, O. Marcouillé, J.L. Marlats, T. Moreno, P. Morin, A. Nadji, L.S. Nadolski, D. Pédeau, P. Prigent, S. Ravy, J.P. Ricaud, M. Ros, P. Roy, M.G. Silly, F. Sirotti, K. Tavakoli, M.-A. Tordeux, D. Zerbib
    SOLEIL, Gif-sur-Yvette, France
 
  The femtoslicing project at SOLEIL is currently under commissioning. It will enable to serve several beamlines with 100 fs FWHM long pulses of soft and hard X-rays with reasonable flux and with a 1 kHz repetition rate. It is based on the interaction of a femtosecond Ti:Sa laser with electrons circulating in the magnetic field of a modulator wiggler, that provides the electron beam energy modulation on the length scale of the laser pulse. The optimization of the interaction is performed using two dedicated diagnostics stations. The first one, operating in the Infra-Red (IR) is installed in the tunnel and allows the adjustment of the temporal, spectral and spatial overlap between the laser and the electron beam. The second one, located in the IR-THz AILES beamline, measures the intensity of the terahertz (THz) radiation emitted by the local dip structure produced in the core electron beam after interaction. This second setup provides refined optimization of the interaction. This paper describes the layout of these diagnostics and gives first results and characterization of the slicing experiment at SOLEIL.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO054  
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WEPRO027 W164: A Wiggler Dedicated to the PUMA Beamline and the FEMTOSLICING Project at SOLEIL 1998
 
  • O. Marcouillé, H.B. Abualrob, P. Brunelle, L. Chapuis, M.-E. Couprie, T.K. El Ajjouri, M. Labat, J.L. Marlats, F. Marteau, A. Mary, A. Nadji, K. Tavakoli, M.-A. Tordeux, M. Valléau
    SOLEIL, Gif-sur-Yvette, France
 
  The W164 out-vacuum wiggler was designed and built at SOLEIL with the double goal of producing high energy photons for the PUMA beamline (10 keV to 70 keV) and to be used as a modulator for the FEMTOSLICING project. The insertion device requires simultaneously reaching low resonant energy (1.55 eV) and high critical energy of photons (above 10 keV), leading to the choice of high field and large periods. The 3.28 m long wiggler is composed of 20 periods of 164 mm made of NdFeB magnets and vanadium permendur poles. The required effective field for the FEMTOSLICING is 1.53 T and the maximum total field reaches 1.8T at the minimum gap of 14.5 mm. The small transverse size of the poles was optimized to minimize the magnetic forces (8 tons maximum) resulting, together with the large field produced at minimum gap, to a large vertical dynamic field integral (DFI) inside the horizontal physical aperture of the chamber. A dedicated permanent magnet system was designed, constructed and installed at both wiggler ends to cancel the DFI at minimum gap. The construction of the wiggler, the results of the magnetic measurements and the effects on dynamics measured on electron beam are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO027  
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WEPRO051 Commissioning of the Laser Beam Transport for the Femto-slicing Project at the Synchrotron SOLEIL 2059
 
  • P. Prigent, M.-E. Couprie, Ph. Hollander, M. Labat, C. Laulhé, A. Lestrade, J. Lüning, J.L. Marlats, P. Morin, A. Nadji, S. Ravy, J.P. Ricaud, M.G. Silly, F. Sirotti, M.-A. Tordeux, D. Zerbib
    SOLEIL, Gif-sur-Yvette, France
 
  The aim of the Femto-Slicing project at SOLEIL is to generate 100 fs X-rays pulses on two beamlines, CRISTAL and TEMPO in a first step, for pump-probe experiments in the hard and soft X-rays regions and possibly on two other beamlines in the future. Two fs lasers are currently in operation on TEMPO and CRISTAL for pump-probe experiments on the ps time scale enabling time resolved photoemission and photodiffraction studies. The Femto-Slicing project is based on the fs laser of the CRISTAL beamline, which can be adjusted to deliver 5 to 3 mJ pulses of 30 fs duration at 1 to 2.5 kHz respectively. The laser beam is separated in three branches: one delivering about 2 mJ to the modulator Wiggler and the other ones delivering the remaining energy to the TEMPO and CRISTAL experiments. This layout will yield natural synchronization between IR laser pump and X-ray probe pulses, only affected by drift associated with beam transport. In this paper, we present the current status of the Femto-Slicing project at SOLEIL, with particular emphasis on the characterization of the laser beam transport to the wiggler, to the CRISTAL beamline, and with the first results that will be obtained.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO051  
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WEPRO052 The ThomX Project Status 2062
 
  • A. Variola, D. Auguste, A. Blin, J. Bonis, S. Bouaziz, C. Bruni, K. Cassou, I. Chaikovska, S. Chancé, V. Chaumat, R. Chiche, P. Cornebise, O. Dalifard, N. Delerue, T. Demma, I.V. Drebot, K. Dupraz, N. El Kamchi, M. El Khaldi, P. Gauron, A. Gonnin, E. Guerard, J. Haissinski, M. Jacquet, D. Jehanno, M. Jouvin, E. Jules, F. Labaye, M. Lacroix, M. Langlet, D. Le Guidec, P. Lepercq, R. Marie, J.C. Marrucho, A. Martens, B. Mercier, E. Mistretta, H. Monard, Y. Peinaud, A. Pérus, B. Pieyre, E. Plaige, C. Prevost, T. Roulet, R. Roux, V. Soskov, A. Stocchi, C. Vallerand, A. Vermes, F. Wicek, Y. Yan, J.F. Zhang, Z.F. Zomer
    LAL, Orsay, France
  • P. Alexandre, C. Benabderrahmane, F. Bouvet, L. Cassinari, M.-E. Couprie, P. Deblay, Y. Dietrich, M. Diop, M.E. El Ajjouri, M.P. Gacoin, C. Herbeaux, N. Hubert, M. Labat, P. Lebasque, A. Lestrade, R. Lopes, A. Loulergue, P. Marchand, F. Marteau, D. Muller, A. Nadji, R. Nagaoka, J.-P. Pollina, F. Ribeiro, M. Ros, R. Sreedharan
    SOLEIL, Gif-sur-Yvette, France
  • A. Bravin, G. Le Duc, J. Susini
    ESRF, Grenoble, France
  • C. Bruyère, A. Cobessi, W. Del Net, J.L. Hazemann, J.L. Hodeau, P. Jeantet, J. Lacipière, O. Proux
    Institut NEEL, Grenoble, France
  • E. Cormier, J. Lhermite
    CELIA, Talence, France
  • L. De Viguerie, H. Rousselière, P. Walter
    LAMS, Universite Pierre et Marie Curie, Ivry Sur Seine, France
  • H. Elleaume, F. Esteve
    INSERM, Grenoble Institut des Neurosciences, La Tronche, France
  • J.M. Horodinsky, N. Pauwels, P. Robert
    CNRS (IRSD), Orsay, France
  • S. Sierra
    TED, Velizy, France
 
  Funding: Work supported by the French Agence Nationale de la Recherche as part of the program EQUIPEX under reference ANR-10-EQPX-51, the Ile de France region, CNRS-IN2P3 and Université Paris Sud XI
A collaboration of seven research institutes and an industry has been set up for the ThomX project, a compact Compton Backscattering Source (CBS) based in Orsay – France. After a period of study and definition of the machine performances a complete description of all the systems has been provided. The infrastructures work is started and the main systems are in the call for tender phase. In this paper we will illustrate the definitive machine parameters and components characteristics. We will also update the results of the different ongoing R&D on optical resonators, fast power supplies for the injection kickers and on the electron gun.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO052  
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THOBA01 A New Scheme for Electro-optic Sampling at Record Repetition Rates : Principle and Application to the First (turn-by-turn) Recordings of THz CSR Bursts at SOLEIL 2794
 
  • E. Roussel, S. Bielawski, C. Evain, M. Le Parquier, C. Szwaj
    PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
  • J.B. Brubach, L. Cassinari, M.-E. Couprie, M. Labat, L. Manceron, J.P. Ricaud, P. Roy, M.-A. Tordeux
    SOLEIL, Gif-sur-Yvette, France
 
  The microbunching instability is an ubiquitous problem in storage rings at high current density. However, the involved fast time-scales hampered the possibility to make direct real-time recordings of theses structures. When the structures occur at a cm scale, recent works at UVSOR*, revealed that direct recording of the CSR electric field with ultra-high speed electronics (17 ps) provides extremely precious informations on the microbunching dynamics. However, when CSR occurs at THz frequencies (and is thus out of reach of electronics), the problem remained largely open. Here we present a new opto-electronic strategy that enabled to record series of successive electric field pulses shapes with picosecond resolution (including carrier and envelope), every 12 ns, over a total duration of several milliseconds. We also present the first experimental results obtained with this method at Synchrotron SOLEIL, above the microbunching instability threshold, and we present direct tests of Vlasov-Fokker-Planck and macroparticle models. The method can be applied to the detection of ps electric fields in other situations where high repetition rate is also an issue.
* First Direct, Real Time, Recording of the CSR Pulses Emitted During the
Microbunching Instability, using Thin Film YBCO Detectors at UVSOR-III, IPAC2014
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THOBA01  
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THPRO003 Progress of the LUNEX5 demonstator Project 2856
 
  • M.-E. Couprie, C. Benabderrahmane, P. Berteaud, C. Bourassin-Bouchet, F. Bouvet, L. Cassinari, L. Chapuis, J. Daillant, M. Diop, M.E. El Ajjouri, C. Evain, C. Herbeaux, N. Hubert, M. Labat, P. Lebasque, A. Lestrade, A. Loulergue, P. Marchand, O. Marcouillé, J.L. Marlats, C. Miron, P. Morin, A. Nadji, F. Polack, F. Ribeiro, J.P. Ricaud, P. Roy, K. Tavakoli, M. Valléau, D. Zerbib
    SOLEIL, Gif-sur-Yvette, France
  • S. Bielawski, E. Roussel, C. Szwaj
    PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
  • B. Carré, D. Garzella
    CEA/DSM/DRECAM/SPAM, Gif-sur-Yvette, France
  • X. Davoine
    CEA/DAM/DIF, Arpajon, France
  • N. Delerue
    LAL, Orsay, France
  • G. Devanz
    CEA/DSM/IRFU, France
  • A. Dubois, J. Lüning
    CCPMR, Paris, France
  • G. Lambert, R. Lehé, V. Malka, A. Rousse, C. Thaury
    LOA, Palaiseau, France
  • C. Madec, A. Mosnier
    CEA/IRFU, Gif-sur-Yvette, France
 
  LUNEX5 (free electron Laser Using a New accelerator for the Exploitation of X-ray radiation of 5th generation) aims at investigating the production of short, intense, coherent pulses in the 40-4 nm spectral range [1]. It comprises two types of accelerators connected to a single Free Electron Laser (FEL) for advanced seeding configurations (seeding with High order Harmonic in Gas, echo). A 400 MeV superconducting Linear Accelerator, adapted for studies of advanced FEL schemes, will enable future upgrade towards high repetition rate and multi-user operation by splitting part of the macropulse to different FEL lines. A 0.4 - 1 GeV Laser Wake Field Accelerator (LWFA) [2] will also be qualified by the FEL application. After the Conceptual Design Report, R&D has been launched on different sub components. Following transport theoretical studies of longitudinal and transverse manipulation of a LWFA electron beam enabling to provide theoretical amplification, a test experiment is under preparation.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO003  
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