Keyword: ion-source
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MOA4IO01 Performance of the Low Charge State Laser Ion Source in BNL ion, laser, target, plasma 49
 
  • M. Okamura, J.G. Alessi, E.N. Beebe, M.R. Costanzo, L. DeSanto, S. Ikeda, J.P. Jamilkowski, T. Kanesue, R.F. Lambiase, D. Lehn, C.J. Liaw, D.R. McCafferty, J. Morris, R.H. Olsen, A.I. Pikin, R. Schoepfer, A.N. Steszyn
    BNL, Upton, Long Island, New York, USA
 
  In March 2014, a Laser Ion Source (LIS) was commissioned which delivers high brightness low charge state heavy ions for the hadron accelerator complex in Brookhaven National Laboratory (BNL). Since then, the LIS has provided many heavy ion species successfully. The induced low charge state (mostly singly charged) beams are injected to the Electron Beam Ion Source (EBIS) where ions are then highly ionized to fit to the following accelerator's Q/M acceptance, like Au32+. Last year, we upgraded the LIS to be able to provide two different beams into EBIS on a pulse-to- pulse basis. Now the LIS is simultaneously providing beams for both the Relativistic Heavy Ion Collider (RHIC) and NASA Space Radiation Laboratory (NSRL). In the conference we present achieved performance and developed new techniques of the LIS.  
slides icon Slides MOA4IO01 [7.796 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOA4IO01  
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TUPOB64 Beam Measurements at the PIP-II Injector Test LEBT ion, solenoid, emittance, simulation 636
 
  • J.-P. Carneiro, B.M. Hanna, L.R. Prost, V.E. Scarpine, A.V. Shemyakin
    Fermilab, Batavia, Illinois, USA
 
  This paper presents the main results obtained during a series of beam measurements performed on the PIP-II Injector Test LEBT from November 2014 to June 2015. The measurements which focus on beam transmission, beam size and emittance at various locations along the beamline are compared with the beam dynamics code TRACK. These studies were aimed at preparing the beam for optimal operation of the RFQ, while evaluating simulation tools with respect to experimental data.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-TUPOB64  
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WEPOA04 Design of Front End for RF Synchronized Short Pulse Laser Ion Source ion, laser, rfq, plasma 693
 
  • Y. Fuwa, Y. Iwashita
    Kyoto ICR, Uji, Kyoto, Japan
 
  A short pulse laser ion source is under development. In this ion source, ions are produced by femto-second laser in RF electric field and produced ion bunch with a few nanosecond pulse length. This feature can eliminate bunching section of RFQ and beam can be accelerated from the first cell of RFQ. In this presentation, results of design study for the RFQ without bunching section will be presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEPOA04  
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WEPOA45 Positive and Negative Ions Radio Frequency Sources with Solenoidal Magnetic Field ion, plasma, solenoid, electron 799
 
  • V.G. Dudnikov, R.P. Johnson
    Muons, Inc, Illinois, USA
  • G. Dudnikova
    ICT SB RAS, Novosibirsk, Russia
  • B. Han, S. Murrey, C. Stinson
    ORNL RAD, Oak Ridge, Tennessee, USA
  • T.R. Pennisi, C. Piller, M. Santana, M.P. Stockli, R.F. Welton
    ORNL, Oak Ridge, Tennessee, USA
 
  Funding: The work was supported in part by US DOE Contract DE-AC05-00OR22725 and by STTR grant, DE-SC0011323.
Operation of Radio Frequency surfaces plasma sources (RF SPS) with a solenoidal magnetic field are described. RF SPS with solenoidal and saddle antennas are discussed. Dependences of beam current and extraction current on RF power, gas flow, solenoidal magnetic field and filter magnetic field are presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEPOA45  
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WEPOA56 Design of RFQ Linac to Accelerate High Current Lithium Ion Beam from Laser Ion Source for Compact Neutron Source ion, neutron, rfq, linac 820
 
  • S. Ikeda, T. Kanesue, M. Okamura
    BNL, Upton, Long Island, New York, USA
 
  Accelerator-driven compact neutron sources have been developed to conduct nondestructive inspection more conveniently and/or on the spot with lower cost than other neutron sources, such as spallation sources and nuclear reactors. In typical compact source, proton or deuteron are injected into Li or Be. To develop a higher flax source than conventional ones, we propose a source with 7Li beam generated by laser ion source using direct injection scheme (DPIS) into RFQ linac. Because of the higher velocity of center of mass than that in the case of proton beam injection, generated neutrons are more collimated. In addition, laser ion source with DPIS is expected to accelerate mA class fully ionized 7Li beam stably with simple setup, while it is difficult for conventional ion sources. The high collimation and high current are expected to lead to higher neutron flax. In this presentation, we present a design of RFQ linac optimized to accelerate such a high current beam with shorter distance.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEPOA56  
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WEPOA57 Stabilized Operation Mode of Laser Ion Source Using Pulsed Magnetic Field ion, laser, solenoid, electron 823
 
  • S. Ikeda, M.R. Costanzo, T. Kanesue, R.F. Lambiase, C.J. Liaw, M. Okamura
    BNL, Upton, Long Island, New York, USA
 
  A laser ion source (LIS) provides several types of singly charged ions into an electron beam ion source (EBIS) followed by linear accelerator injectors for the Relativistic Heavy Ion Collider (RHIC) and the NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory. In the present set-up of the LIS, beam current shape varies with time drastically. It is expected that the present current shape is not optimal for the ion trap of the EBIS. However, there are no knobs to modify the shape flexibly. Therefore, as an upgrade of the LIS, we install a coil and a pulsed circuit* that generates a fast-rising pulsed magnetic field to tailor the beam current shape. In this presentation, the effect of the magnetic field on the beam profile from the LIS and the performance of the injectors, such as the transmission and the charge injected into an accelerator downstream, are described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEPOA57  
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THA3IO02 The ESS Accelerator: Moving into Construction ion, cavity, cryomodule, linac 1252
 
  • J.G. Weisend
    ESS, Lund, Sweden
 
  The ESS accelerator construction has started and the tunnel and RF gallery will be handed over to the accelerator division in 2016 with the installation of the cryoplant starting later in the year. Beam should be delivered in June 2019 at 570 MeV and 1.5 MW with full 5 MW capability being available in 2023. The project is a highly contributed project with more than 50% of the total budget being contributed IK by more than 25 IK partners. The talk will review the project status reflecting the IK nature of the project with the many partners contributions and with some focus on the cryogenics systems.  
slides icon Slides THA3IO02 [17.091 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-THA3IO02  
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