Keyword: status
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MOOP01 The SARAF-LINAC Project Status linac, cryomodule, rfq, solenoid 38
 
  • N. Pichoff, B. Gastineau, P. Girardot
    CEA/DSM/IRFU, France
  • N. Bazin, D. Chirpaz-Cerbat, B. Dalena, G. Ferrand, P. Gastinel, F. Gougnaud, M. Jacquemet, C. Madec, P.A.P. Nghiem, D. Uriot
    CEA/IRFU, Gif-sur-Yvette, France
  • P. Bertrand, M. Di Giacomo, R. Ferdinand, J.-M. Lagniel
    GANIL, Caen, France
 
  SNRC and CEA collaborate to the upgrade of the SARAF accelerator to 5 mA CW 40 MeV deuteron and proton beams (Phase 2). CEA is in charge of the design, construction and commissioning of the superconducting linac (SARAF-LINAC Project). This paper presents to the accelerator community the status at August 2016 of the SARAF-LINAC Project.  
slides icon Slides MOOP01 [4.978 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP01  
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MOPLR047 Advanced Vertical Electro-Polishing studies at Cornell with Faraday cavity, SRF, niobium, target 233
 
  • F. Furuta, M. Ge, T. Gruber, G.H. Hoffstaetter, J.J. Kaufman, M. Liepe, J. Sears
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • T.D. Hall, M.E. Inman, S.T. Snyder, E.J. Taylor
    Faraday Technology, Inc., Clayton, Ohio, USA
 
  Cornell's SRF group and Faraday Technology Inc. have started collaborations on two phase-II SBIR projects. Both projects are aiming for the development of advanced Vertical Electro-Polishing (VEP) for Nb SRF cavities, such as HF free or acid free VEP protocols. These could be eco-friendlier alternatives for the standard, HF-based EP electrolyte used, and could bring new breakthrough performance for Nb SRF cavities. Here we give a status update and report first results from these two projects.  
poster icon Poster MOPLR047 [2.852 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR047  
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MOPLR062 European Spallation Source (ESS) Normal Conducting Front End Status Report rfq, proton, plasma, cavity 274
 
  • W. Wittmer, P.O. Gustavsson, F. Hellström, G. Hulla
    ESS, Lund, Sweden
  • I. Bustinduy, P.J. González, G. Harper, S. Varnasseri, C. de la Cruz
    ESS Bilbao, Zamudio, Spain
  • L. Celona, S. Gammino, L. Neri
    INFN/LNS, Catania, Italy
  • A.C. Chauveau, D. Chirpaz-Cerbat
    CEA/IRFU, Gif-sur-Yvette, France
  • F. Grespan, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • P. Mereu
    INFN-Torino, Torino, Italy
  • O. Midttun
    University of Bergen, Bergen, Norway
  • O. Piquet, B. Pottin
    CEA/DSM/IRFU, France
 
  The European Spallation Source (ESS) will deliver first protons on target by mid 2019. Civil construction of the accelerator tunnel has made good progress and will allow starting installation of the normal conducting frond end (NCFE) by end of 2017. To achieve these milestones the design of all major beam line components have been completed and the construction of the subsystems begun. We report on the advancement of the subsystems and the commissioning progress of the microwave discharge Proton Source (PS-ESS).  
poster icon Poster MOPLR062 [1.396 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR062  
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TU2A01 State of the Art, Status and Future of RF Sources for Linacs klystron, linac, operation, collider 353
 
  • E. Jensen
    CERN, Geneva, Switzerland
 
  This talk tries an overview of recent developments in RF sources for linear accelerators of different scales and for various applications, spanning a frequency range from about 100 MHz to X-band, spanning duty factors from about 10-3 to CW, and spanning power levels from a few kW up to hundreds of MW average. Exciting recent trends include new bunching concepts for klystrons promising a significant increase of efficiency and better power combiners paving the way to MW-class solid state power amplifiers.  
slides icon Slides TU2A01 [15.049 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TU2A01  
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TUPLR048 Status and Lesson Learned from Manufacturing of FPC Couplers for the XFEL Program SRF, Windows, cryomodule, factory 572
 
  • S. Sierra, G. Garcin, Ch.L. Lievin, G. Vignette
    TED, Velizy-Villacoublay, France
  • A. Gallas, W. Kaabi
    LAL, Orsay, France
  • M. Knaak, M. Pekeler, L. Zweibaeumer
    RI Research Instruments GmbH, Bergisch Gladbach, Germany
 
  For the XFEL accelerator, Thales, RI research Instrument and LAL are working on the manufacturing, assembly and conditioning of Fundamental power couplers. 670 couplers has been manufactured. The main characteristics of these couplers are remained at 1.3 GHz. The paper describes the full production activity from the starting of the program We describe the lesson learned from a mass production of FPC coupler and different steps necessaries for obtaining a rate up to 10 couplers a week. we propose also some other way to be optimized for a future possible mass production of such components. With comparison of processes and adaptation which could benefit to an increase rate, if needed, including some of them which could be studies from the coupler definition to the manufacturing process in order to obtain a stable and possible increased rate or lower cost of production by decreasing the risks on programs. The status of the production curve during the program is also given  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR048  
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TUP106006 Vertical Test Results on ESS Medium Beta Elliptical Cavity Prototype cavity, linac, cryomodule, SRF 631
 
  • E. Cenni
    CEA/IRFU, Gif-sur-Yvette, France
  • S. Berry, P. Bosland, F. Éozénou, L. Maurice, J. Plouin, C. Servouin
    CEA/DSM/IRFU, France
  • G. Costanza
    Lund University, Lund, Sweden
  • C. Darve
    ESS, Lund, Sweden
  • G. Devanz, X. Hanus, F. Peauger, D. Roudier
    CEA/DRF/IRFU, Gif-sur-Yvette, France
 
  The ESS elliptical superconducting Linac consists of two types of 704.42 MHz cavities, medium and high beta, to accelerate the beam from 216 MeV (spoke cavity Linac) up to the final energy at 2 GeV. The last Linac optimization, called Optimus+ [1], has been carried out taking into account the limitations of SRF cavity performance (field emission). The medium and high-beta parts of the Linac are composed of 36 and 84 elliptical cavities, with geometrical beta values of 0.67 and 0.86 respectively. This work presents the latest vertical test results on ESS medium beta elliptical cavity prototypes. We describe the cavity preparation procedure from buffer chemical polishing to vertical test. Finally magnetic probes (Fluxgate) were installed on the cavity to determine magnetic field background during vertical test. The latest vertical test results showed that our cavity design performance are beyond requirements.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUP106006  
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THPRC008 Status of the Development and Manufacturing of LCLS-II Fundamental Power Couplers SRF, Windows, cryomodule, factory 782
 
  • S. Sierra, G. Garcin, Ch.L. Lievin, C. Ribaud, G. Vignette
    TED, Velizy-Villacoublay, France
  • M. Knaak, A. Navitski, M. Pekeler, L. Zweibaeumer
    RI Research Instruments GmbH, Bergisch Gladbach, Germany
 
  For the LCLS-II project, Thales and RI research Instrument are working on the manufacturing and assembly of the Fundamental Power Couplers. The paper describes the production of the Fundamental Power Couplers for the LCLS-II project. The main characteristics of these couplers are remained at 1.3 GHz. It describes the main challenges to be overcome principally on the Warm Internal conductor, with a thickness of copper of 150μm. The results obtained on this coating We describe the results obtained on the prototype phase and the status of the serial production on the date of the paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC008  
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THPRC016 Assembling Experience of the First Two HIE-ISOLDE Cryomodules cavity, vacuum, linac, ion 805
 
  • M. Therasse, G. Barlow, S. Bizzaglia, O. Capatina, A. Chrul, P. Demarest, J-B. Deschamps, J. Gayde, M. Gourragne, A. Harrison, G. Kautzmann, Y. Leclercq, D. Mergelkuhl, T. Mikkola, A. Miyazaki, V. Parma, J.A.F. Somoza, M. Struik, S. Teixeira L'pez, W. Venturini Delsolaro, L.R. Williams, P. Zhang
    CERN, Geneva, Switzerland
  • J. Dequaire
    Intitek, Lyon, France
 
  The assembly of the first two cryomodules (CM1 and CM2) of the new superconducting linear accelerator HIE-ISOLDE (High Intensity and Energy ISOLDE), located downstream of the REX-ISOLDE normal conducting accelerator, started one year and half ago. After a delicate assembly phase in the cleanroom which lasted nine months, the first cryomodule was transported to the ISOLDE hall on 2 May 2015 and coupled to the existing REX-ISOLDE accelerator, increasing the energy of the radioactive ion beams from 2.8 to 4.3 MeV per nucleon. The superconducting linac supplied the CERN-ISOLDE Facility, with radioactive zinc ions until the end of the proton run in November 2015. At the beginning of 2016, the second cryomodule was installed in the machine, increasing the energy to 5.5 MeV per nucleon. During commissioning of the first cryomodule in summer 2015, it was found that the performance of the RF superconductive cavities was limited by the over-heating of their RF couplers. The decision was taken to refurbish CM1 and reinstall it at the end of April. In this paper, we present the challenges faced and the experience gained with the cleanroom assembly of the first two cryomodules, especially the construction of the SC RF cavities and their RF ancillaries.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC016  
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THPLR020 Status and Progress of FRIB High Level Controls controls, database, linac, ion 885
 
  • G. Shen, E.T. Berryman, D. Chabot, M.A. Davidsaver, K. Fukushima, Z.Q. He, M. Ikegami, M.G. Konrad, D. Liu, D.G. Maxwell, V. Vuppala
    FRIB, East Lansing, USA
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
FRIB, which is a new heavy ion accelerator facility to provide intense beams of rare isotopes, is currently under construction at Michigan State University. Its driver linac accelerates all stable ions up to uranium, and targets to provides a CW beam with the energy of 200 MeV/u and the beam power of 400 kW. The beam commissioning of the its Front-End has been planned to start from Middle of 2016. The high level controls for incoming commissioning is under active development and deployment. The latest status progress will be presented in this paper.
 
poster icon Poster THPLR020 [2.291 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR020  
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THPLR043 EPICS IOC Prototype of FRIB Machine Protection System interface, FPGA, controls, hardware 949
 
  • L. Wang, M. Ikegami, Z. Li, G. Shen, S. Zhao
    FRIB, East Lansing, USA
  • M.A. Davis
    NSCL, East Lansing, Michigan, USA
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
The FRIB Machine Protection System (MPS) is designed to protect accelerator components from damage by the beam in case of operating failure. MPS includes master and slave nodes, which are controlled by MPS IOC. In this paper, we present design of MPS IOC and status of its prototyping.
 
poster icon Poster THPLR043 [0.500 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR043  
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THPLR046 FRIB Fast Machine Protection System: Engineering for Distributed Fault Monitoring System and Light Speed Response network, FPGA, timing, linac 959
 
  • Z. Li, L.R. Dalesio, M. Ikegami, S.M. Lidia, L. Wang, S. Zhao
    FRIB, East Lansing, USA
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
The Facility for Rare Isotope Beams (FRIB), a high-power, heavy ion facility, can accelerate beam up to 400 kW power with kinetic energy ≥ 200 MeV/u. Its fast protection system is required to detect failure and remove beam within 35 μs to prevent damage to equipment. The fast protection system collects OK/NOK inputs from hundreds of devices, such as low level RF controllers, beam loss monitors, and beam current monitors, which are distributed over 200 m. The engineering challenge here is to design a distributed control system to collect status from these devices and send out the mitigation signals within 10 μS timing budget and also rearm for the next pulse for 100 Hz beam (10 mS). This paper describes an engineering solution with a master-slave structure adopted in FRIB. Details will be covered from system architecture to FPGA hardware platform design and from communication protocols to physical interface definition. The response time of ~9.6μS from OK/NOK inputs to mitigation outputs is reached when query method is used to poll the status. A new approach is outlined to use bi-direction loop structure for the slave chain and use streaming mode for data collection from slave to master, ~3μS response time are expected from this engineering optimization.
 
poster icon Poster THPLR046 [1.872 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR046  
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THPLR067 Series Production of the RF Power Distribution for the European XFEL cavity, klystron, coupling, cryogenics 1008
 
  • S. Choroba, V.V. Katalev
    DESY, Hamburg, Germany
  • E.M. Apostolov
    Technical University of Sofia, Sofia, Bulgaria
 
  The RF power distribution for the European XFEL allows for individual RF power for the 808 superconducting cavities of the European XFEL. It consists of a number of elements, not only waveguide components, but also girders, cables or cooling systems. The production of the RF distribution consists of several tasks. In order to deal with the schedule of the entire project a detailed planning, organization and monitoring of the series production of the RF power distribution was required. This paper describes the RF power distribution layout and the series production process.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR067  
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