Keyword: rfq
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MOP1WB03 Experimental Study of Beam Dynamics in the PIP-II MEBT Prototype cavity, optics, emittance, simulation 54
 
  • A.V. Shemyakin, J.-P. Carneiro, B.M. Hanna, V.A. Lebedev, L.R. Prost, A. Saini, V.E. Scarpine
    Fermilab, Batavia, Illinois, USA
  • C.J. Richard
    NSCL, East Lansing, Michigan, USA
  • V.L. Sista
    BARC, Mumbai, India
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics
The Proton Improvement Plan, Stage Two (PIP-II) is a program of upgrades proposed for the Fermilab injection complex, which central part is an 800-MeV, 2-mA CW SRF linac. A prototype of the PIP-II linac front end called PIP-II Injector Test (PIP2IT) is being built at Fermilab. As of now, a 15-mA DC, 30-keV H ion source, a 2 m-long Low Energy Beam Transport (LEBT), a 2.1-MeV CW RFQ, followed by a 10-m Medium Energy Beam Transport (MEBT) have been assembled and commissioned. The MEBT bunch-by-bunch chopping system and the requirement of a low uncontrolled beam loss put stringent limitations on the beam envelope and its variation. Measurements of transverse and longitudinal beam dynamics in the MEBT were performed in the range of 1-10 mA of the RFQ beam current. Almost all measurements are made with 10 μs beam pulses in order to avoid damage to the beam line. This report presents measurements of the transverse optics with differential trajectories, reconstruction of the beam envelope with scrapers and an Allison emittance scanner, as well as bunch length measurements with a Fast Faraday Cup.
 
slides icon Slides MOP1WB03 [3.750 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-MOP1WB03  
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MOP2WB01 60 mA Beam Study in J-PARC Linac DTL, linac, lattice, simulation 60
 
  • Y. Liu
    KEK/JAEA, Ibaraki-Ken, Japan
  • A. Miura
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
  • T. Miyao
    KEK, Ibaraki, Japan
  • M. Otani, T. Shibata
    J-PARC, KEK & JAEA, Ibaraki-ken, Japan
 
  Upgrade of Linac peak current from 50 mA to 60 mA is one of the keys to the next power upgrade in J-PARC. Beam studies with 60 mA were carried out in July and December, 2017, for the challenging issues such as investigation of beam property from the ion source, halo behavior throughout the LEBT, RFQ and MEBT1, emittance/Twiss measurement at MEBT1, beam emittance control, etc. Expected/unexpected problems, intermediate results and preparation for the next trials were introduced in this paper.  
slides icon Slides MOP2WB01 [12.952 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-MOP2WB01  
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MOP2WB02 Simulation and Measurement Campaigns for Characterization and Performance Improvement of the CERN Heavy Ion Linac3 linac, simulation, extraction, emittance 64
 
  • G. Bellodi, S. Benedetti, D. Küchler, F.J.C. Wenander
    CERN, Geneva, Switzerland
  • V. Toivanen
    GANIL, Caen, France
 
  In the framework of the LHC Injector Upgrade programme (LIU), several activities have been carried out to improve the GTS-LHC ion source and Linac3 performance (Linac3 providing the charged heavy ion beams for CERN exper-iments). A restudy of the beam dynamics and transport through the linac was initiated, through a campaign of systematic machine measurements and parallel beam simulations, generalising techniques developed for beam characterization during Linac4 commissioning. The work here presented will review the most relevant findings and lessons learnt in the process.  
slides icon Slides MOP2WB02 [17.512 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-MOP2WB02  
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TUA1WC01 Installation and Commissioning of the Upgraded SARAF 4-rods RFQ operation, proton, linac, emittance 75
 
  • L. Weissman, D. Berkovits, B. Kaizer, J. Luner, D. Nusbaum, A. Perry, J. Rodnizki, A. Shor, I. Silverman
    Soreq NRC, Yavne, Israel
  • A. Bechtold
    NTG Neue Technologien GmbH & Co KG, Gelnhausen, Germany
 
  Acceleration of a 1mA Continuous Wave (CW) deuteron (A/Q=2) beam at SARAF has been accomplished for the first time. A 5.3 mA pulsed deuteron beam has been accelerated as well. These achievements cap a series of major modifications to the Radio Frequency Quadrupole (RFQ) 4-rods structure which included the incorporation of a new end flange, introduction of an additional RF power coupler and, most recently, installation of a new set of rod electrodes. The new rod modulation has been designed to enable deuteron beam acceleration at a lower inter-electrode voltage, to a slightly reduced final energy of 1.27 MeV/u and with stringent constraints on the extant of beam tails in the longitudinal phase space. This report will focus primarily on the installation and testing of the new rods. The successful conditioning campaign to 200 kW, ~10% above than the working point for deuteron operation, will be described. Beam commissioning with proton and deuteron beams will also be detailed. Results of beam measurements will be presented, including the characterization of the output beam in the transverse and longitudinal phase space. Finally, future possible improvements are discussed.  
slides icon Slides TUA1WC01 [12.606 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUA1WC01  
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TUA2WC02 Status of R&D on New Superconducting Injector Linac for Nuclotron-NICA cavity, linac, SRF, proton 83
 
  • S.M. Polozov, M. Gusarova, T. Kulevoy, M.V. Lalayan, T.A. Lozeeva, S.V. Matsievskiy, R.E. Nemchenko, A.V. Samoshin, V.L. Shatokhin, N.P. Sobenin, D.V. Surkov, K.V. Taletskiy, V. Zvyagintsev
    MEPhI, Moscow, Russia
  • A.A. Bakinowskaya, V.S. Petrakovsky, I.L. Pobol, A.I. Pokrovsky, D.A. Shparla, A. Shvedau, S.V. Yurevich, V.G. Zaleski
    Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Belarus
  • M.A. Baturitski, S.A. Maksimenko
    INP BSU, Minsk, Belarus
  • A.V. Butenko, N. Emelianov, A.O. Sidorin, E. Syresin, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  • S.E. Demyanov
    Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus, Minsk, Belarus
  • V.A. Karpovich
    BSU, Minsk, Belarus
  • T. Kulevoy
    ITEP, Moscow, Russia
  • V.N. Rodionova
    Belarussian State University, Scientific Research Institute of Nuclear Problems, Minsk, Belarus
  • V. Zvyagintsev
    TRIUMF, Vancouver, Canada
 
  The progress in R&D of QWR and HWR superconducting cavities will be discussed. These cavities are designed for the new injection linac constructed for Nuclotron-NICA complex at JINR. The goal of new linac is to accelerate protons up to 25 MeV (and up to 50 MeV at the second stage) and light ions to ~7.5 MeV/u for Nuclotron-NICA injection. Current results of beam dynamics simulations, SC cavities design and SRF technology development will be presented in this report.  
slides icon Slides TUA2WC02 [3.782 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUA2WC02  
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TUA1WD01 ESS Commissioning Plans MMI, linac, DTL, ion-source 127
 
  • N. Milas, R. De Prisco, M. Eshraqi, Y. Levinsen, R. Miyamoto, M. Muñoz, D.C. Plostinar
    ESS, Lund, Sweden
 
  The ESS linac is currently under construction in Lund, Sweden, and once completed it will deliver an unprecedented 5 MW of average power. The ion source and LEBT commissioning starts in 2018 and will continue with the RFQ, MEBT and the first DTL tank next year and up to the end of the fourth DTL tank in 2020. This paper will summarize the commissioning plans for the normal conducting linac with focus on the ion source and LEBT and application development for both commissioning and operation.  
slides icon Slides TUA1WD01 [1.552 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUA1WD01  
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WEP1WB01 Beam Dynamics of the ESS Linac linac, target, cavity, quadrupole 206
 
  • Y. Levinsen, R. De Prisco, M. Eshraqi, N. Milas, R. Miyamoto, D.C. Plostinar, A. Ponton
    ESS, Lund, Sweden
 
  The ESS linac will deliver an unprecedented 5 MW of average beam power when completed. Beyond the 90 MeV normal conducting front-end, the acceleration is performed using SC structures up to the design energy of 2 GeV. As the ESS will send the beam to a fixed tungsten target, the emittance is not as important a factor as in injectors. However, the losses have to be studied in detail, including not only the average operational loss required to be of less than 1 W/m, but also the accidental losses, losses due to failure and other potentially damaging losses. The commissioning of the ion source and LEBT starts this year and will continue with the RFQ next year. In this contribution we will discuss the beam dynamics aspects and challenges of the ESS linac.  
slides icon Slides WEP1WB01 [2.084 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP1WB01  
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WEP1WB02 Beam Dynamics Simulation and Measurements for the IFMIF/EVEDA Project simulation, space-charge, emittance, proton 210
 
  • M. Comunian, L. Antoniazzi, A. Baldo, C. Baltador, L. Bellan, D. Bortolato, M. Cavenago, E. Fagotti, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri, A. Pisent, F. Scantamburlo
    INFN/LNL, Legnaro (PD), Italy
  • L. Bellan
    Univ. degli Studi di Padova, Padova, Italy
  • N. Chauvin
    IRFU, CEA, University Paris-Saclay, Gif-sur-Yvette, France
  • H. Dzitko
    F4E, Germany
 
  In the framework of IFMIF/EVEDA project the source and RFQ are ready to be tested with beam. In this article the beam dynamics simulation and the measurement performed in preparation of the first beam injection are presented. The installed line is composed by the proton and deuteron Source with the LEBT composed of two solenoids that inject in the 10 meters long RFQ, the MEBT, diagnostic plate and the beam dump. The line is prepared to be tested with protons of 8 mA in pulsed mode (up to 0.1%).  
slides icon Slides WEP1WB02 [10.303 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP1WB02  
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WEP1WB04 Design of Linac-100 and Linac-30 for New Rare Isotope Facility Project DERICA at JINR linac, cavity, experiment, electron 220
 
  • S.M. Polozov, V.S. Dyubkov, T. Kulevoy, Y. Lozeev, T.A. Lozeeva, A.V. Samoshin
    MEPhI, Moscow, Russia
  • A.S. Fomichev, L.V. Grigorenko
    JINR/FLNR, Moscow region, Russia
  • T. Kulevoy
    ITEP, Moscow, Russia
 
  DERICA (Dubna Electron-Radioactive Ion Collider fAcility) is the new ambitious project under development at JINR, Dubna *. DERICA is proposed as the next step in RIB facilities development. It is planned that in the DERICA project the RIBs produced by the Fragment Separator, are stopped in a gas cell, are accumulated in the ion trap and then are transferred to the ion trap/charge breeder, creating the highest possible charge state for the further effective acceleration (system {gas cell - ion trap - ion trap/charge breeder}). From the accelerator point of view DERICA will include the driver LINAC-100 of heavy ions with Z=5-92 (energy up to 100 MeV/u) with operating mode close to CW, the fragment separator, the re-accelerator LINAC-30 of secondary beams with energies in the range 5-30 MeV/u), the fast ramping ring (energy <300 AMeV), the collector ring and the electron storage ring. General DERICA concept and possible design of the LINAC-100 and LINAC-30 accelerators playing a key role in the project will presented in this report.
* A.S. Fomichev et al., Scientific program of DERICA prospective accelerator and storage ring facility for radioactive ion beam research, http://aculina.jinr.ru/pdf/DERICA/DERICA-for-ufn-8-en.pdf
 
slides icon Slides WEP1WB04 [11.844 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP1WB04  
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THP1WB01 Commissioning Status of Linear IFMIF Prototype Accelerator (LIPAc) MMI, acceleration, cavity, emittance 366
 
  • A. Kasugai, T. Akagi, T. Ebisawa, Y. Hirata, R. Ichimiya, K. Kondo, S. Maebara, K. Sakamoto, T. Shinya, M. Sugimoto
    QST, Aomori, Japan
  • P. Abbon, N. Bazin, B. Bolzon, N. Chauvin, S. Chel, R. Gobin, J. Marroncle, B. Renard
    CEA/DSM/IRFU, France
  • L. Antoniazzi, L. Bellan, D. Bortolato, M. Comunian, E. Fagotti, F. Grespan, M. Montis, A. Palmieri, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • P.-Y. Beauvais, H. Dzitko, D. Gex, A. Jokinen, G. Phillips
    F4E, Germany
  • P. Cara, R. Heidinger, I. Moya
    Fusion for Energy, Garching, Germany
  • D. Jiménez-Rey, I. Kirpitchev, J. Mollá, P. Méndez, I. Podadera, D. Regidor, M. Weber, C. de la Morena
    CIEMAT, Madrid, Spain
  • J. Knaster, A. Marqueta, G. Pruneri, F. Scantamburlo
    IFMIF/EVEDA, Rokkasho, Japan
 
  The IFMIF project aiming at material tests for a future fusion DEMO reactor is under the EVEDA phase in the BA Agreement of fusion program between Japan and EU. As the accelerator activity, the installation and commissioning of the Linear IFMIF Prototype Accelerator (LIPAc) is at the second stage of demonstration of the feasibility of the low energy section of an IFMIF deuteron accelerator up to 9 MeV with a beam current of 125 mA, CW. The installation of injector, RFQ, MEBT, D-Plate and LPBD for LIPAc with 8 coaxial high-power transmission lines and RF power system was just done in 2017 at Rokkasho, Japan. After that, the RF conditioning of RFQ for beam commissioning is underway. The beam commissioning of RFQ with H+/D+ and the acceleration demonstration up to 5 MeV-125 mA-0.1% duty cycle with D+ will be done.  
slides icon Slides THP1WB01 [13.177 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WB01  
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THP2WB02 High-Intensity Beam Dynamics Simulation of the IFMIF-like Accelerators simulation, space-charge, emittance, beam-transport 373
 
  • S.H. Moon, M. Chung
    UNIST, Ulsan, Republic of Korea
 
  Funding: This research was supported by the National Research Foundation of Korea (Grant No. NRF-2017M1A7A1A02016413).
The IFMIF (International Fusion Material Irradiation Facility) project is being considered to build fusion material test facility. The IFMIF will use two accelerators to generate high energy neutrons. However, the IFMIF accelerators have been designed to have much higher beam power and beam current than the existing accelerators, so space charge effect is very strong. This raises big concerns about beam loss and beam transport stability, thus detailed high-intensity beam dynamics study of the IFMIF-like accelerators is indispensable. This research aims to perform source to target simulation of the IFMIF-like accelerator. The simulation has been carried out by two different kinds of simulation codes because the IFMIF accelerator has distinctive features. One is TRACEWIN simulation code which was used in IFMIF initial design. The other is WARP 3D PIC code which can precisely calculate space charge effects. This presentation will focus on beam simulations for LEBT, RFQ, and MEBT of the IFMIF accelerator
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP2WB02  
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