Keyword: ion-source
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MOPME024 Progress of the RF Negative Ion Source Research at HUST plasma, ion, experiment, extraction 430
 
  • D.Z. Chen, M. Fan, J. Huang, X.F. Li, K.F. Liu, C. Wang, H.K. Yue, C. Zhou
    HUST, Wuhan, People's Republic of China
  • J.C. Huang, D. Li, D.W. Liu, Z. Zhang
    Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
  
  Funding: Ministry of Science and Technology of China
To promote the research and talent cultivation for ITER negative ion sources, Huazhong University of Science and Technology (HUST) has started to develop an experimental facility since 2011 under the support of Ministry of Science and Technology of China. As the first stage, we are building a radio frequency (RF) driver which will produce the plasma for yielding negative ions in the next stage. A deal of experimental research has been carried out on the setup. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME024  
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MOPRI008 A Compact 2.45 GHz Microwave IOn Source Based High Fluence Irradiation Facility at IUAC, Delhi ion, plasma, extraction, coupling 592
 
  • N. Kumar, R. Ahuja, R.N. Dutt, D. Kanjilal, P.S. Lakshmy, Y. Mathur, G.O. Rodrigues
    IUAC, New Delhi, India
  
  A compact 2.45 GHz microwave ion source based low energy ion been facility has been developed for performing various experiments in material science and for studies related to plasma physics. The design of the compact microwave source is based on a tunable permanent magnet configuration and is powered by a 2 kW magnetron [1,2]. The double walled, water cooled stainless steel plasma chamber and ridge waveguide have been fabricated using the latest ‘LaserCUSING’ technique. The electron energy distribution functions have been measured in a similar low frequency ion source and validated by model calculations [1]. Extraction of the beam can also be performed at very low voltages in the order of hundreds of volts with high intensities by nullifying the space charge effects with the secondary electrons. The facility will be used for ion implantation, phase formation, surface etching and pattering experiments. The design aspects of the microwave ion source and low energy beam transport system will be presented.
* “Studies on the effect of the axial magnetic field on the x-ray bremsstrahlung in a 2.45 GHz permanent magnet microwave ion source” Narender Kumar et. al. accepted for publication in RSI. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI008  
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MOPRI009 Study on New Method for Generating Highly Charged Ions with Double Pulse Laser Ion Source laser, ion, plasma, controls 595
 
  • T. Shibuya
    TIT, Tokyo, Japan
  • N. Hayashizaki
    RLNR, Tokyo, Japan
  • M. Yoshida
    KEK, Ibaraki, Japan
  
  Laser ion source capable of generating high intensity ions is best for the ion source of RI beam facilities. A great deal of effort has been made on particle number as DPIS. Only few attempts have so far been made at generating highly charged ions. One of previous research has reported that Au+53 ions are produced by PALS laser. "Nonlinear process" mechanisms such as resonance absorption and self-focusing were used for this. However, these methods have limitation due to low repetition rate of the laser. Nd (λ=1064nm, E<1.2J, t~10ns) and Yb laser(λ=1030nm, E<10J, t~500fs) systems is possible to operate at 10 - 50Hz repetition rate. This double pulse laser system, with attainable laser intensity up to about 1017[W/cm2], was used to generate highly charged ions of solid target. First, the Nd laser creates a plasma plume. Next, the Yb laser reheats plasma plume by high intensity pulse at delay time of nanosecond. The properties of ions were investigated mainly on the base of time-of-flight method.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI009  
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MOPRI011 Control of Plasma Flux with Pulsed Solenoid for Laser Ion Source ion, plasma, electron, laser 601
 
  • S. Ikeda, K. Horioka
    TIT, Yokohama, Japan
  • Y. Fuwa, S. Ikeda, M. Kumaki
    RIKEN, Saitama, Japan
  • T. Kanesue, M. Okamura
    BNL, Upton, Long Island, New York, USA
  
  We discuss the behavior of laser-ablation plasma spreading through a pulsed solenoidal field to minimize the beam emittance of laser-ablation ion source (LIS). LIS is expected to produce high-flux and low emittance ion beams from various solid materials in vacuum because of the high drift velocity and low temperature of the ablation plasma due to the adiabatic expansion. However, the ion flux level from the ablation plasma into an extraction gap changes within a pulse and then the shape of the sheath boundary changes transiently. Then, the integrated emittance is larger than the stroboscopic emittance at a certain time slice. To prevent the transient effect, we tried to control the plasma flux with a pulsed solenoidal magnetic field. The field is expected to change the direction of the plasma flow like a lens. By changing the magnetic flux density according to the transient flux level of ablation plasma, we can expect to control the plasma flux at the extraction gap. To investigate the controllability of the plasma flow, we measured the plasma flux as a function of parameters of the pulsed magnetic field. We scanned ion probes along the beam.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI011  
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MOPRI013 Development of a 14.5 – 18 GHz ECR Ion Source at University of Huelva ion, ECRIS, solenoid, injection 607
 
  • I. Martel, C. Bonțoiu, A.C.C. Villari
    University of Huelva, Huelva, Spain
  • A. Garbayo
    AVS, Elgoibar, Spain
  • A.C.C. Villari
    FRIB, East Lansing, Michigan, USA
  
  Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
A double-frequency ECR ion source has been modelled numerically for high-efficiency ion production from protons to uranium. The simulations were targeted at optimizing magnetic confinement of the hot electrons through an iterative design of three solenoids and a dodecapole. In addition a plasma production model has been implemented in order to study ion species yield from neutral gases and their drift towards the cold plasma regions. Eventually, ion extraction and beam capture in the space-charge regime have been performed. Mechanical design studies approached the plasma chamber cooling and magnet coils refrigeration. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI013  
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MOPRI014 Extracting a High Current Long Pulse Hminus Beam for FETS extraction, ion, power-supply, solenoid 611
 
  • D.C. Faircloth, M. Cannon, S.R. Lawrie, M. Perkins
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • C. Gabor
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  
  The Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL) requires a 60 mA 2 ms 50 Hz Hminus beam. A Penning Surface Plasma Source is used to produce the beam. This paper gives the latest results obtained using a new 25 kV long pulse extraction power supply designed and built at RAL. Power supply performance, beam current and emittance are detailed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI014  
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MOPRI015 Installing the VESPA H− Ion Source Test Stand at RAL ion, extraction, vacuum, plasma 614
 
  • S.R. Lawrie, D.C. Faircloth, A.P. Letchford, M. Perkins, M. Whitehead, T. Wood
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  
  A Penning-type negative hydrogen (H—) ion source has been used reliably on the ISIS pulsed spallation neutron and muon facility at the Rutherford Appleton Laboratory (RAL) in the UK for almost 30 years. However a detailed study of the ion source plasma and extraction has never been undertaken. If these properties were known, the beam emittance and losses due to collimation could be reduced, and the lifetime increased. This paper summarises the progress made on installing a Vessel for Extraction and Source Plasma Analyses (VESPA) to fill the knowledge gap.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI015  
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MOPRI082 Acceleration of High-Intensity Heavy-Ion Beams at RIKEN RI Beam Factory ion, cyclotron, ECRIS, linac 800
 
  • O. Kamigaito, T. Dantsuka, M. Fujimaki, N. Fukunishi, H. Hasebe, Y. Higurashi, E. Ikezawa, H. Imao, M. Kase, M. Kidera, M. Komiyama, H. Kuboki, K. Kumagai, T. Maie, T. Nakagawa, M. Nakamura, J. Ohnishi, H. Okuno, K. Ozeki, N. Sakamoto, K. Suda, T. Watanabe, Y. Watanabe, K. Yamada, H. Yamasawa
    RIKEN Nishina Center, Wako, Japan
  • T. Nagatomo
    RIKEN, Saitama, Japan
  
  Recent efforts concerning the RIBF accelerators in RIKEN have been directed towards achieving higher beam intensities of very heavy ions such as uranium and xenon. As presented in the last IPAC conference in 2013, the intensities of these ion beams have significantly improved due to the construction of a new injector, RILAC2, which is equipped with a 28-GHz superconducting ECR ion source, the development of a helium gas stripper, and upgrading of the bending power of the fRC. In this light, this paper presents the subsequent upgrade programs carried out in the last couple of years, such as developments of a new air stripper for xenon beams and a micro-oven for metallic ions. The current performance level of the RIBF accelerator complex, as well as a future plan to further increase the beam intensities, are also presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI082  
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MOPRI083 Improvement of the Beam Transmission in the Central Region of Warsaw U200P Cyclotron cyclotron, ion, injection, ECR 803
 
  • O. Steczkiewicz, P. Gmaj
    HIL, Warsaw, Poland
  • V. Bekhterev, I.A. Ivanenko
    JINR, Dubna, Moscow Region, Russia
  
  To date, Warsaw U200P cyclotron exploited a mirror inflector to route heavy ions extracted from ECR ion source (10 GHz, 11 kV) to the central region of the cyclotron. However, in such configuration very low transmission was reachable after many optimizations. Additionally, the new ECR ion source (14, 5 GHz, 14-24 kV) was installed, which offers energies far exceeding capabilities of the currently operated inflector and central region. To overcome these obstacles, we have developed a spiral inflector and redesigned central region of the cyclotron. It was a very challenging task, bearing in mind limited volume of central region in our compact machine, to carve these elements suitably for decent versatility of ion beams offered by Warsaw cyclotron. This project was executed in the collaboration with FLNR in Dubna, Russia. The cyclotron equipped with the new central region works in the "constant orbit" regime. Hereby we present the results of both computational simulations and measurements of the beam transmission in upgraded central region.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI083  
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MOPRI085 IMALION – Creation and Low Energy Transportation of a Milliampere Metal Ion Beam ion, ECR, simulation, plasma 809
 
  • A. Silze, M. Kreller, G.H. Zschornack
    DREEBIT GmbH, Dresden, Germany
  • U. Hartung, T. Kopte, T. Weichsel
    Fraunhofer FEP, Dresden, Germany
  
  Funding: This work is supported by the European Regional Development Fund (ERDF) and the Freistaat Sachsen (project no. 100074113 and 100074115).
IMALION – which stands for IMplantation of ALuminum IONs – is a facility originally designed for applications in photovoltaics and other branches in semiconductor industry. The idea was to create and guide a milliampere beam of low charged metal ions so that targets with a width of 20 cm and more can be irradiated homogeneously with minimal differences in intensity and entrance angle of the incoming beam over the entire surface. In this poster, we outline the solutions which had to be found during the realization of the project. This concerns the production of a milliampere metal ion current in a newly designed electron cyclotron resonance (ECR) ion source combined with an internal sputter magnetron device. Stable operation of the sputter magnetron under ECR magnetic mirror conditions has been proven by optical spectroscopy and Langmuir probe measurements. Furthermore, electrostatic and magnetic beamline elements developed for precision guiding of a low energy but high intensity beam as well as high intensity ion beam diagnostics are presented and ion beam transportation simulations are shown. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI085  
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MOPRI086 Status of the PXIE Low Energy Beam Transport Line solenoid, ion, rfq, emittance 812
 
  • L.R. Prost, R. Andrews, A.Z. Chen, B.M. Hanna, V.E. Scarpine, A.V. Shemyakin, J. Steimel
    Fermilab, Batavia, Illinois, USA
  • R.T.P. D'Arcy
    UCL, London, United Kingdom
  
  Funding: Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy
A CW-compatible, pulsed H− superconducting RF linac (a.k.a. PIP-II) is envisaged as a possible path for upgrading Fermilab’s injection complex [1]. To validate the concept of the front-end of such machine, a test accelerator (a.k.a. PXIE) [2] is under construction. The warm part of this accelerator comprises a 10 mA DC, 30 keV H− ion source, a 2m-long LEBT, a 2.1 MeV CW RFQ, and a MEBT that feeds the first cryomodule. In addition to operating in the nominal CW mode, the LEBT should be able to produce a pulsed beam for both PXIE commissioning and modelling of the front-end nominal operation in the pulsed mode. Concurrently, it needs to provide effective means of inhibiting beam as part of the overall machine protection system. A peculiar feature of the present LEBT design is the capability of using the ~1m-long section immediately preceding the RFQ in two regimes of beam transport dynamics: neutralized and space charge dominated. This paper introduces the PXIE LEBT, reports on the status of the ion source and LEBT installation, and presents the first beam measurements. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI086  
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TUPRO054 Preliminary Design of a LEBT for HIAF Linac at IMP ion, rfq, solenoid, quadrupole 1153
 
  • Y. Yang, Y. He, L.T. Sun, X.Z. Zhang, H.W. Zhao
    IMP, Lanzhou, People's Republic of China
  
  Funding: National Basic Research Program of China (contract No. 2014CB845500) and the 100 Talents Program of the CAS ( No.  Y214160BR0) and China Nature Science Foundation (contract No. 11221064).
Heavy-Ion Advanced Research Facility (HIAF) is a new project proposed at Institute of Modern Physics (IMP) in China. HIAF project accelerator is composed of intense ion beam sources, injector superconducting LINAC, acceleration and accumulation storage ring, a collection ring and a collider ring. To achieve the ultimate project goal, HIAF accelerator requires the ion source to provide very high intensity of heavy ion beams, such as 1.7 emA 238U34+ with a repetition rate of 5 Hz and pulse length of 0.5 ms. No state-of-the-art ion source can meet the needs. As a baseline of the project, a high performance superconducting ECR ion source, which is designed to be operational at the microwave frequency of 40-60 GHz will be adopted to produce the pulsed beam of interest for the HIAF accelerator. To transport and match the beams from ECR to the downstream RFQ, a low energy beam transport (LEBT) is needed. This paper presents a preliminary design of the LEBT and the beam dynamics in the LEBT. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO054  
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TUPME039 System Integration of the Demonstration Siemens Electrostatic Accelerator high-voltage, ion, power-supply, experiment 1440
 
  • H. von Jagwitz-Biegnitz
    JAI, Oxford, United Kingdom
  • P. Beasley, S. Goßmann-Levchuk, O. Heid
    Siemens AG, Erlangen, Germany
  • D.C. Faircloth
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • R.G. Selway
    Inspired Engineering Ltd, Climping, United Kingdom
  
  Siemens has proposed a novel compact DC electrostatic tandem accelerator to produce protons of a few MeV. Siemens is currently building a prototype of the accelerator at the Rutherford Appleton Laboratory. This paper reports on recent progress on the different components of the system as well as the commissioning of the whole machine.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME039  
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TUPME053 Study of the Energy Modulated Electron Cyclotron Resonance Ion Source for the Coupled RFQ-SFRFQ Cavity coupling, ion, cavity, ECR 1486
 
  • W.L. Xia, J.E. Chen, S.L. Gao, Z.Y. Guo, Y.R. Lu, S.X. Peng, Z. Wang, X.Q. Yan, J. Zhao, K. Zhu
    PKU, Beijing, People's Republic of China
  
  The coupled RFQ and SFRFQ cavity has been manufactured and tested recently. According to the beam dynamic design, the input He+ beam within 120° phase width is designed for the cavity to achieve over 98% transmission efficiency. An energy modulated electron cyclotron resonance (ECR) ion source was proposed and simulated. To achieve the 1% energy modulation on the 30keV direct current (DC) beam, two simplified RF power feeding structures for beam bunching were studied. The simulations show positive results as well as the bunched beam is achieved by the energy modulated ECR ion source.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME053  
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WEOAB01 The Commissioning of the Laser Ion Source for RHIC-EBIS ion, laser, target, injection 1890
 
  • T. Kanesue, J.G. Alessi, E.N. Beebe, M.R. Costanzo, L. DeSanto, R.F. Lambiase, D. Lehn, C.J. Liaw, V. LoDestro, M. Okamura, R.H. Olsen, A.I. Pikin, D. Raparia, A.N. Steszyn
    BNL, Upton, Long Island, New York, USA
  • S. Ikeda
    TIT, Yokohama, Japan
  • K. Kondo, M. Sekine
    RLNR, Tokyo, Japan
  
  Funding: Work supported by NASA and Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
A new laser ion source (LIS) for low charge state ion production was installed on RHIC-EBIS. This is the first LIS to be combined with an Electron Beam Ion Source (EBIS) type heavy ion source. The LIS provides intense low charge state ions from any solid state material, with low emittance and narrow pulse length. These features make it suitable as an external source of 1+ ions that can be injected into the EBIS trap for charge breeding. In addition, a LIS is the only type ion source which can allow rapid switching among many ion species, even on pulse-by-pulse basis, by changing either laser path or target position, to strike the material of choice. The EBIS works as a charge breeder, with the extracted high charge state ions used in the following accelerators. The beams from LIS will be used for RHIC and NASA Space Radiation Laboratory (NSRL) at BNL. The rapid beam switching, which was not possible with existing ion sources, will expand the research field at NSRL as a galactic cosmic ray simulator. The results of commissioning will be shown. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEOAB01  
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WEPRO067 Development of NICA Injection Complex ion, rfq, linac, DTL 2103
 
  • A.V. Butenko, E.E. Donets, A.D. Kovalenko, K.A. Levterov, A.O. Sidorin, G.V. Trubnikov
    JINR/VBLHEP, Moscow, Russia
  • A. Belov
    RAS/INR, Moscow, Russia
  • E.D. Donets, V.V. Fimushkin, A. Govorov, V. Kobets, V. Monchinsky
    JINR, Dubna, Moscow Region, Russia
  • H. Höltermann, H. Podlech, U. Ratzinger, A. Schempp
    BEVATECH, Frankfurt, Germany
  • T. Kulevoy, D.A. Liakin
    ITEP, Moscow, Russia
  • S.M. Polozov
    MEPhI, Moscow, Russia
  
  The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is assumed to operate using two linear accelerators: the Alvarez-type linac LU-20 as injector for light ions, polarized protons and deuterons and a new linac HILac for heavy ions. The new Booster and existing Nuclotron superconducting rings are the main parts of the injection complex of the NICA collider. The status of ion sources, both linacs and rings is presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO067  
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WEPRO083 Implementation of a Superconducting Electron Beam Ion Source into the HIT Ion Source Test Bench ion, rfq, ECRIS, emittance 2153
 
  • E. Ritter, A. Silze, G.H. Zschornack
    DREEBIT GmbH, Dresden, Germany
  • R. Cee, Th. Haberer, A. Peters, T.W. Winkelmann
    HIT, Heidelberg, Germany
  • G. Zschornack
    TU Dresden, Dresden, Germany
  
  Cancer therapy with light heavy ions is now a well proven technology. Almost all facilities are running Electron Cyclotron Resonance Ion Sources (ECRIS) to produce carbon ions and protons as well. In the 1990’s the idea of using a Electron Beam Ion Source was proposed (EBIS) [1]. Some proof of principle measurements were carried out [2] but the application of EBIS ion sources in radiation facilities has not been established. We present results from the implementation of a superconducting EBIS, the Dresden EBIS-SC, at an RFQ accelerator at the testbench of the Heidelberg Ion Therapy Center (HIT). First results from C 4+ ions produced by the Dresden EBIS-SC [3] and injection in an RFQ accelerator at the HIT testbench are shown. Furthermore, emittance measurements as well as investigations of the ion energy and the transmission through the RFQ were done. The emittance of the EBIS source is lower by a factor of nine compared to an ECRIS, which improves the transmission through the RFQ. With the current setup the ion output from the EBIS-SC is lower by a factor of 7 compared to an ECRIS to fulfill the requirements of the highest irradiation level. Further improvements are discussed.
* erik.ritter@dreebit.com 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO083  
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WEPRO106 Complex “ALFA” After 10 Years of Operation on Track Membranes Production ion, cyclotron, extraction, injection 2212
 
  • G.A. Karamysheva, Yu.N. Denisov
    JINR, Dubna, Moscow Region, Russia
  
  The film irradiation complex “ALFA” dedicated to expose the polymer films used in the track membranes production was designed and manufactured by Joint Institute for Nuclear Research for “TRACKPORE TECHNOLOGY" holding company and put into operation in 2002 year in Dubna, Russia. The complex consists of the isochronous cyclotron CYTRACK with external injection of ions, the extraction system, the beam transport of accelerated ions and the film irradiation chamber. Cyclotron CYTRACK accelerates argon ions upto the energy - 2,4 МeV/nucleon, intensity of extracted beam is about 500nA, extraction efficiency totaled 50%. The complex “ALFA” products polyethylene terephthalate track membranes with less than 25 μm thickness and less than 40cm width. After ten years of the successful operation complex “ALFA” was upgraded. Vacuum, control and power supply systems were replaced. As a result the stability and efficiency of the operation of the equipment were increased.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO106  
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THPRO103 A Control System for the FRANZ Accelerator controls, ion, network, neutron 3134
 
  • S.M. Alzubaidi, O. Meusel, U. Ratzinger, K. Volk, C. Wagner
    IAP, Frankfurt am Main, Germany
  • H. Dinter
    DESY, Hamburg, Germany
  
  The Frankfurt Neutron Source at the Stern- Gerlach Zentrum (FRANZ) is a multi-purpose facility for experiments related to accelerator development and nuclear astrophysics. A 200 mA proton beam will produce a neutron flux by use of the reaction 7Li(p, n)7Be. To study the reliability and performance of the accelerator an effective and powerful control system will be needed. A small ion source was used for the first performance test of the control system. The design of the control loop algorithm for the High Current proton source will be discussed. Physical data routinely taken by the control system are compared with manual measurements.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO103  
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THPME001 Commissioning and Operation of the MedAustron Injector: Results and Future Outlook ion, rfq, DTL, emittance 3202
 
  • L.C. Penescu, M. Kronberger, T. Kulenkampff, F. Osmić, P. Urschütz
    EBG MedAustron, Wr. Neustadt, Austria
  • W. Pirkl
    CERN, Geneva, Switzerland
  
  The MedAustron facility is a synchrotron-driven hadron therapy and research center presently under construction in Wiener Neustadt, Austria. In its final outline, the facility will provide H+ beams with kinetic energies ≤250MeV and C6+ beams of ≤400MeV/u for clinical applications, and for non-clinical applications H+ of up to 800MeV. First patient treatment is foreseen for the end of 2015. The (H3)+ and C4+ beams are generated at 8keV/u in continuous mode by three ECR ion sources and transported to the RFQ for acceleration to 400keV/u. An inter-tank section matches the beam to the entrance of an IH-mode DTL that accelerates the particles to 7MeV/u before they are stripped to, respectively, H+ and C6+, debunched and transported to the injection plane of the synchrotron. At a later stage of the project, beams of other species can be generated with similar optics. This contribution presents the results of the injector commissioning and operation. A comparison with the baseline optics and with the design error studies is given. In addition, an overview on the operational experience is given, with emphasis on the system reliability, stability and reproducibility.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME001  
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THPME006 Straight Injection of an intense Uranium Beam into the GSI High Current RFQ ion, rfq, emittance, quadrupole 3217
 
  • H. Vormann, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, C. Xiao, S.G. Yaramyshev
    GSI, Darmstadt, Germany
  
  A dedicated high current uranium ion source and LEBT will be built at the GSI High Current Injector (HSI), to fulfil the intensity requirements for FAIR (Facility for Antiproton and Ion Research at Darmstadt). This new injection line will be integrated into the existing complex which already comprises two branches. The new LEBT is designed as a straight injection line without dipole magnet, i.e. without dispersive charge state separation. All uranium charge states, coming from the ion source, are transported to the heavy ion high current GSI-HSI-RFQ. Only the design charge state U4+ is accelerated to the final RFQ energy. The new LEBT design is based on beam emittance and current measurements behind the existing ion source. Beam dynamics simulations have been performed with the codes TRACE-3D (envelopes), DYNAMION, BEAMPATH and TRACK (multiparticle). The recent layout of the LEBT, as well as the results of beam dynamics studies are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME006  
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THPME007 A Virtual Charge State Separator as an Advanced Tool Coupling Measurements and Simulations emittance, ion, simulation, quadrupole 3220
 
  • S.G. Yaramyshev, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, H. Vormann
    GSI, Darmstadt, Germany
  
  A new Low Energy Beam Transport (LEBT) for multi-charge uranium beam will be built at GSI High Current Injector. All uranium charge states coming from the new ion source will be injected into GSI heavy ion high current HSI-RFQ, but only design ions U4+ will be accelerated to the final RFQ energy. A detailed knowledge about injected beam- current and -emittance for pure design U4+ ions is necessary for a proper beam line design commissioning and operation, while the measurements are possible only for a full beam including all charge states. Detailed measurements of beam current and emittance are performed behind the first quadrupole triplet at the beam line. A dedicated algorithm, based on combination of measurements and results of an advanced beam dynamics simulations, provides for an extraction of beam- current and -emittance for only U4+ component of a beam. The obtained results and final beam dynamics design for the new straight beam line are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME007  
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THPME026 The R&D Status of SSC-LINAC rfq, ion, linac, ECR 3277
 
  • X. Yin, H. Du, Y. He, P. Jiang, X.N. Li, L.Z. Ma, J. Meng, L.T. Sun, H. Wang, J.W. Xia, Z. Xu, Y.Q. Yang, Q.G. Yao, Y.J. Yuan, X.H. Zhang, X.Z. Zhang, H.W. Zhao, Z.Z. Zhou
    IMP, Lanzhou, People's Republic of China
  • J.E. Chen, S.L. Gao, G. Liu, Y.R. Lu, X.Q. Yan, K. Zhu
    PKU, Beijing, People's Republic of China
  
  A powerful heavy ion injector SSC-linac is under constructing at IMP in Lanzhou. The continuous wave (CW) 4-rod RFQ operating at 53.667 MHz has been developed as the low beam energy injector linac. The 40Ar8+ ion beam extracted from the ECR ion source was used for the RFQ commissioning. The particle energy 142.8 keV/u and the 198 euA beam current were measured at the exit of RFQ with the 94% transmission. In this paper, the recent R&D progress of the SSC-LINAC including the development of key components and the beam commissioning results are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME026  
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THPME048 Status and Plans for Linac4 Installation and Commissioning linac, ion, rfq, emittance 3332
 
  • M. Vretenar, A. Akroh, L. Arnaudon, P. Baudrenghien, G. Bellodi, J.C. Broere, O. Brunner, J.F. Comblin, J. Coupard, V.A. Dimov, J.-F. Fuchs, A. Funken, F. Gerigk, E. Granemann Souza, K. Hanke, J. Hansen, I. Kozsar, J.-B. Lallement, L. Lenardon, J. Lettry, A.M. Lombardi, C. Maglioni, O. Midttun, B. Mikulec, D. Nisbet, M.M. Paoluzzi, U. Raich, S. Ramberger, F. Roncarolo, C. Rossi, J.L. Sanchez Alvarez, R. Scrivens, J. Tan, C.A. Valerio, J. Vollaire, R. Wegner, S. Weisz, M. Yarmohammadi Satri, F. Zocca
    CERN, Geneva, Switzerland
  
  Linac4 is a normal conducting 160 MeV H− linear accelerator presently being installed and progressively commissioned at CERN. It will replace the ageing 50 MeV Linac2 as injector of the PS Booster (PSB), increasing at the same time its brightness by a factor of two thanks to the higher injection energy. This will be the first step of a program to increase the beam intensity in the LHC injectors for the needs of the High-Luminosity LHC project. After a series of beam measurements on a dedicated test stand the 3 MeV Linac4 front-end, including ion source, RFQ and a beam chopping line, has been recommissioned at its final position in the Linac4 tunnel. Commissioning of the following section, the Drift Tube Linac, is starting. Beam commissioning will take place in steps of increasing energy, to reach the final 160 MeV in 2015. An extended beam measurement phase including testing of stripping equipment for the PSB and a year-long test run to assess and improve Linac4 reliability will take place in 2016, prior to the connection of Linac4 to the PSB that will take place during the next long LHC shut-down.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME048  
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THPME049 TAC Proton Accelerator Facility: Normal Conducting Part proton, ion, DTL, linac 3335
 
  • E. Algin
    Eskisehir Osmangazi University, Eskisehir, Turkey
  • B. Akkus, L. Sahin
    Istanbul University, Istanbul, Turkey
  • H. Cetinkaya
    Dumlupinar University, Faculty of Science and Arts, Kutahya, Turkey
  
  The Turkish Accelerator Center Proton Accelerator Facility (TAC PAF) based on a 1 MW, 2 GeV proton linac will include both normal conducting and superconducting accelerator structures. The project is currently in the technical design phase. The normal conducting part of the TAC PAF will consist of an ion source, a low energy beam transport line, a radio frequency quadrupole, a medium energy beam transport line, and two drift tube linac structures in order to accelerate the beam up to 65 MeV. Acceleration from 65 MeV up to 150 MeV and then 2 GeV energy will be provided by a SC-spoke cavity and two SC-elliptical cavities, respectively. In the long term, TAC PAF will be used as a neutron source. The accelerator structures, their design, and possible experimental stations of TAC PAF project will be presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME049  
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THPME050 SPP Beamline Design and Beam Dynamics ion, rfq, plasma, solenoid 3338
 
  • G. Turemen, B. Yasatekin
    Ankara University, Faculty of Sciences, Ankara, Turkey
  • A. Alacakir
    SNRTC, Ankara, Turkey
  • M. Celik, Z. Sali
    Gazi University, Faculty of Arts and Sciences, Teknikokullar, Ankara, Turkey
  • Ö. Mete
    UMAN, Manchester, United Kingdom
  • G. Unel
    UCI, Irvine, California, USA
  • V. Yildiz
    Bogazici University, Bebek / Istanbul, Turkey
  
  The Radio Frequency Quadrupole (RFQ) of SNRTC Project Prometheus (SPP) will be a demonstration and educational machine which will accelerate protons from 20 keV to 1.5 MeV. The project is funded by Turkish Atomic Energy Authority (TAEK) and it will be located at Saraykoy Nuclear Research and Training Center (SNRTC) in Ankara. The SPP beamline consists of a multi-cusp H+ ion source, a Low Energy Beam Transport (LEBT) line and a four-vane RFQ operating at 352.2 MHz. The design studies for the multi-cusp ion source (RF or DC) were performed with IBSimu and SIMION software packages. The source has already been produced and currently undergoes extensive testing. There is also a preliminary design for the solenoid based LEBT, POISSON and PATH were used in parallel for the preliminary design. Two solenoid magnets are produced following this design. The RFQ design was made using LIDOS. RFQ.Designer and it was crosschecked with a home-grown software package, DEMIRCI. The initial beam dynamics studies have been performed with both LIDOS and TOUTATIS. This paper discusses the design of the SPP beamline focusing on the RFQ beam dynamics.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME050  
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THPME073 Performance of the Low Energy Beam Transport at the RAL Front End Test Stand solenoid, rfq, emittance, ion 3406
 
  • J.J. Back
    University of Warwick, Coventry, United Kingdom
  • D.C. Faircloth, A.P. Letchford
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • C. Gabor
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  • S.R. Lawrie
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • J.K. Pozimski
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  
  The Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL) is intended to demonstrate the early stages of acceleration (0-3 MeV) and beam chopping required for high power proton accelerators, including proton drivers for pulsed neutron spallation sources and neutrino factories. A Low Energy Beam Transport (LEBT), consisting of three solenoids and four drift sections, is used to transport the H− beam from the ion source to the Radio Frequency Quadrupole (RFQ). We present the current performance of the LEBT with regards to beam alignment, transmission and focusing into the acceptance of the RFQ.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME073  
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THPME195 Nondestructive Beam Current Monitor for the 88-inch Cyclotron cyclotron, ion, operation, heavy-ion 3738
 
  • M. Kireeff Covo
    LBNL, Berkeley, California, USA
  
  Funding: This work was supported by the Director, Office of Science, Office of Nuclear Physics, Division of Nuclear Physics, US Department of Energy under Contract No. DE-AC02-05CH11231.
A fast current transformer is mounted in the staging line of the Berkeley 88-inch isochronous cyclotron. The measured signal is amplified and connected to the input of a lock-in amplifier. The lock-in amplifier detects the signal vector from the input signal at the RF reference frequency of the cyclotron second harmonic. The magnitude of the signal detected is calibrated against a Faraday cup and shows the beam current leaving the cyclotron. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME195  
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THPRI016 Pulse Based Data Archive System and Analysis for Current and Beam Loss Monitors in the J-PARC RCS linac, vacuum, injection, ion 3800
 
  • N. Hayashi, S. Hatakeyama, K. Yamamoto
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
  
  The data archive system in the J-PARC 25-Hz Rapid-Cycling Synchrotron (RCS) records the beam intensity and the beam loss monitor (BLM) pattern for all pulses. The system is based on the common memory and utilizes the timing system of the J-PARC. Although its time resolution is limited, it is useful to detect rare events or phenomena appearing with only higher accelerator repetition. Using these data, the stability of the beam intensity, particularly ion source can be examined. The relation between BLM patterns and its causes can be studied pulse-by-pulse basis and it would make use of future improvements.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI016  
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THPRI081 A Transverse Electron Target for Heavy Ion Storage Rings ion, electron, target, quadrupole 3958
 
  • S. Geyer, O.K. Kester, O. Meusel
    IAP, Frankfurt am Main, Germany
  • O.K. Kester
    GSI, Darmstadt, Germany
  
  A transverse electron target already constructed is under investigation for the application in storage rings at the FAIR facility. Using a sheet beam of free electrons in a crossed beam geometry promises a high energy resolution and gives access to the interaction region for spectroscopy. The produced electron beam has a length of 10 cm in ion beam direction and a width of 5 mm in the interaction region with electron densities of up to 109 electrons/cm3. The target allows the adjustment of the electron beam current and energy in the region of several 10 eV and a few keV. Simulations have been performed regarding the energy resolution for electron-ion collisions. Also the ion optical behaviour of the target was investigated numerically. The target is integrated in a test bench to study the performance of the electron gun and the electron beam optics. The installed volume ion source delivers light ions and molecules for characterization of the target performance by measuring charge changing processes. Subsequently the target will be installed temporarily at the Frankfurt Low-Energy Storage Ring (FLSR) for further test measurements. An overview of the project status will be presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI081  
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