LINAC2014 - List of Keywords (ion-source)

Paper	Title	Other Keywords	Page
MOPP063	Development of a Pepper Pot Emittance Measurement Device for FRANZ	emittance, ion, plasma, proton	199
	B. Klump, U. Ratzinger, W. Schweizer, K. Volk IAP, Frankfurt am Main, Germany
	Funding: This work is supported by HGS-HIRe Within the FRANZ project [] on the Institute of Applied Physics, University Frankfurt, a robust and simple pepper pot emittance measurement device for high beam power densities is developed. To use the device directly behind the ion source, a high robustness against HV breakdowns is necessary. This paper gives an overview on experimental setup, on the analysis method and on imaging properties of the screen. Furthermore, the implemented software-based evaluation method is shown. It concludes with a preliminary emittance measurement on the high current ion source for FRANZ. [] U. Ratzinger et al., “intense Pulsed Neutron Source FRANZ in the 1-500 keV Range“, Proc. ICANS-XVIII, Dongguan, April 2007, p.210

MOPP086	Ecr Ion Sources Developments at INFN-LNS for the Production of High Brightness Highly Charged Ion Beams	plasma, ion, electron, ECRIS	254
	D. Mascali, C. Altana, L. Andò, C. Caliri, G. Castro, L. Celona, S. Gammino, L. Neri, F.P. Romano, G. Torrisi INFN/LNS, Catania, Italy G. Sorbello University of Catania, Catania, Italy
	The design of future high-performing ECRIS will require alternative approaches in microwave-to-plasma coupling, in order to maximize the electron density at relatively low frequency and reduce the super-hot electrons formation and their consequences on the beam stability and on source reliability. On these purposes, different activities have been carried out at INFN-LNS in the recent past, including advanced modelling, diagnostics, and studies about alternative methods of plasma heating based on electrostatic-waves generation. A description of these activities will be presented, with special emphasis to the microwave to plasma coupling and to the plasma diagnostics. Some of the already collected results have been a basis for the design of the new AISHa source (for hadrontherapy purposes) and the construction of the innovative prototype named Flexible Plasma Trap: on this machine we will search for advanced schemes of microwave launching, now ongoing thanks to full-wave plus kinetic calculations of the wave-to-plasma interaction mechanism

MOPP101	Design of the 4MeV RFQ for the Helium Beam Irradiatior	rfq, controls, ion, cavity	294
	H.-J. Kwon, Y.-S. Cho, H.S. Kim, K.T. Seol, Y.-G. Song KAERI, Daejon, Republic of Korea
	Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government. A RFQ is considered as a main accelerator of the helium beam irradiation system for the power semiconductor in Korea Multipurpose Accelerator Complex (KOMAC). The RFQ was designed to accelerate the He²⁺ beam up 4MeV with 10mA peak beam current. We chose a vane type RFQ with 200MHz operating frequency. The RFQ will be operated with the frequency tracking mode supplied by the digital low level rf control system. In this paper, the design of the 4MeV RFQ is presented and the beam irradiation system including rf system, control system, utility system, is discussed.

MOPP112	Beam Dynamics of Multi Charge State Ions in RFQ Linac	ion, rfq, laser, acceleration	317
	Y. Fuwa, S. Ikeda, M. Kumaki RIKEN, Saitama, Japan Y. Fuwa, Y. Iwashita Kyoto ICR, Uji, Kyoto, Japan T. Kanesue, M. Okamura BNL, Upton, Long Island, New York, USA
	Laser ion source with DPIS (Direct Plasma Injection Scheme) is a promising candidate for a pre-injector of the high-intensity accelerator. Eliminating LEBT (Low Energy Beam Transport) where the space charge effect is severe, DPIS provides high current ion beam from laser plasma at the entrance of a RFQ linac and ion beams are injected directly into the RFQ linac. However, the injected beam consists of multi charge state ions and their behavior in RFQ linac has not been well understood. In this research, we study the beam dynamics of multi charge state ions in a RFQ. Using the result of computer simulation, a set of 100MHz 4-rod RFQ vanes, which accelerates Al 12+ ion among various charge states of aluminum ions from 8.9 keV/u to 200 keV/u, is newly designed and fabricated to be tested with beams. The result of beam acceleration test using the vane will be reported.

MOPP129	Status of the FETS Project	rfq, proton, emittance, ion	361
	A.P. Letchford, M.A. Clarke-Gayther, D.C. Faircloth, S.R. Lawrie STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom S.M.H. Alsari, M. Aslaninejad, J.K. Pozimski, P. Savage Imperial College of Science and Technology, Department of Physics, London, United Kingdom J.J. Back University of Warwick, Coventry, United Kingdom G.E. Boorman, A. Bosco, S.M. Gibson Royal Holloway, University of London, Surrey, United Kingdom R.T.P. D'Arcy, S. Jolly UCL, London, United Kingdom M. Dudman, J.K. Pozimski STFC/RAL, Chilton, Didcot, Oxon, United Kingdom D.C. Plostinar STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
	The Front End Test Stand (FETS) under construction at RAL is a demonstrator for front end systems of a future high power proton linac. Possible applications include a linac upgrade for the ISIS spallation neutron source, new future neutron sources, accelerator driven sub-critical systems, high energy physics proton drivers etc. Designed to deliver a 60mA H-minus beam at 3MeV with a 10% duty factor, FETS consists of a high brightness ion source, magnetic low energy beam transport (LEBT), 4-vane 324MHz radio frequency quadrupole, medium energy beam transport (MEBT) containing a high speed beam chopper and non-destructive laser diagnostics. This paper describes the current status of the project and future plans.

TUPP056	High Current Proton Beam Operation at GSI UNILAC	proton, ion, linac, operation	550
	W.A. Barth, A. Adonin, P. Gerhard, M. Heilmann, R. Hollinger, W. Vinzenz, H. Vormann GSI, Darmstadt, Germany
	A significant part of the experimental program at FAIR is dedicated to pbar physics requiring a high number of cooled pbars per hour. The primary proton beam has to be provided by a 70 MeV proton linac followed by two synchrotrons. The new FAIR Proton LINAC will deliver a pulsed proton beam of up to 35 mA of 36 μs duration at a repetition rate of 4 Hz. The current GSI heavy ion linac (UNILAC) is able to deliver world record uranium beam intensities for injection into the synchrotrons, but it is not dedicated for FAIR relevant proton beam operation. In an advanced machine investigation program it could be shown, that the UNILAC is able to provide for sufficient high intensities of CH3-beam, cracked (and stripped) in a supersonic nitrogen gas jet into protons and carbon ions. This advanced operational approach results in up to 2 mA of proton intensity at a maximum beam energy of 20 MeV, 100 μs pulse duration and a rep. rate of 4 Hz. Recent linac beam measurements will be presented, showing that the UNILAC is able to serve as a proton FAIR injector for the first time, while the performance is limited to 17% of the FAIR requirements.

TUPP100	Operation Of The Versatile Accelerator Driving the Low Power ADS GUINEVERE at SCK•CEN	neutron, target, operation, ion	659
	M.A. Baylac, A. Billebaud, P. Boge, D. Bondoux, J. Bouvier, S. Chabod, G. Dargaud, E. Froidefond, E. Labussière, R. Micoud, S. Rey LPSC, Grenoble Cedex, France A. Kochetkov, J. Mertens, F. Van Gestel, C. Van Grieken, B. Van Houdt, G. Vittiglio SCK•CEN, Mol, Belgium F.R. Lecolley, J.L. Lecouey, G. Lehaut, N. Marie-Nourry CNRS/IN2P3/LPC CAEN, Caen, France
	GUINEVERE provides a low power accelerator driven system (ADS) to investigate on-line reactivity monitoring and operational procedures of an ADS. It consists of a versatile neutron source, GENEPI-3C, driving the fast sub-critical core, VENUS-F, in SCK•CEN (Belgium). GENEPI-3C is an electrostatic accelerator generating 14 MeV neutrons by bombarding a 250 keV deuteron beam onto a tritium target located within the reactor core. This accelerator produces alternatively continuous beam (up to 1 mA DC), possibly chopped with fast and adjustable interruptions, or short and intense deuteron bunches (~25 mA peak, 1 μs). This paper presents the facility and assesses the 2 years of coupled operation of the accelerator to the reactor.
	Slides TUPP100 [0.969 MB]

WEIOB01	Chopping High-Intensity Ion Beams at FRANZ	proton, ion, rfq, solenoid	765
	C. Wiesner, M. Droba, O. Meusel, D. Noll, O. Payir, U. Ratzinger, P.P. Schneider IAP, Frankfurt am Main, Germany
	The accelerator-driven Frankfurt Neutron Source FRANZ is under construction at the science campus of Frankfurt University. Its Low-Energy Beam Transport (LEBT) line also serves as test stand for transport and chopping experiments with high-intensity ion beams. The high-current proton source was tested successfully with dc currents above 200 mA . The LEBT section consisting of four solenoids and a 250 kHz, 120 ns chopper was successfully commissioned using a helium test beam at low beam currents. Transport simulations including space-charge compensation and measurements are discussed. Simulations and experimental results of the novel LEBT chopper using a Wien-filter type field array and pulsed electrode voltages of up to ±6kV will be presented.
	Slides WEIOB01 [7.925 MB]

THPP015	Status of the FAIR Proton Source and LEBT	linac, ion, diagnostics, proton	863
	N. Chauvin, O. Delferrière, Y. Gauthier, P. Girardot, J.L. Jannin, A. Lotode, N. Misiara, J. Neyret, F. Senée, C.S. Simon, O. Tuske CEA/IRFU, Gif-sur-Yvette, France R. Berezov, J. Fils, P. Forck, R. Hollinger, V. Ivanova, C. Ullmann, W. Vinzenz GSI, Darmstadt, Germany A. Maugueret CEA/DSM/IRFU, France
	The unique Facility for Antiproton and Ion Research – FAIR will deliver stable and rare isotope beams covering a huge range of intensities and beam energies. A significant part of the experimental program at FAIR is dedicated to antiproton physics that requires an ultimate number 7x10¹⁰ cooled pbar/h. The high-intensity proton beam that is necessary for antiproton production will be deliver by a dedicated 75 mA/70 MeV proton linac. The injector section of this accelerator is composed by an ECR source, delivering a pulsed 100 mA H⁺ beam (4 Hz) at 95 keV and a low energy beam transport (LEBT) line required to match the beam for the RFQ injection. The proposed design for the LEBT is based on a dual solenoids focusing scheme. A dedicated chamber containing several diagnostics (Alisson scanner, Wien filter, SEM grid, Iris, Faraday Cup) will be located between the two solenoids. At the end of the beam line, an electrostatic chopper system is foreseen to inject up to 50μseconds long beam pulses into the RFQ. The status of LEBT simulations, design and fabrication of the FAIR proton injector will be presented.

THPP067	Status of the SPP RFQ Project	rfq, ion, cavity, diagnostics	1004
	G. Turemen, B. Yasatekin Ankara University, Faculty of Sciences, Ankara, Turkey A. Alacakir TAEK, Ankara, Turkey G. Unel UCI, Irvine, California, USA H. Yildiz Istanbul University, Istanbul, Turkey
	The SPP project at TAEA will use 352.2 MHz 4-vane Radio Frequency Quadrupole (RFQ) to accelerate H⁺ ions from 20 KeV to 1.5 MeV. With the design already complete the project is at the test production phase. To this effect, a so called "cold model" of 50cm length has been produced to validate the design approach, to perform the low power RF tests and to evaluate possible production errors. This paper will report on the current status of the low energy beam transport line (LEBT) and RFQ cavity of the SPP project. It will also discuss the design and manufacturing of the RF power supply and its transmission line. In addition, the test results from some of the LEBT components will be shown and the final RFQ design will be shared.
	Poster THPP067 [6.947 MB]

THPP094	The Heavy Ion Injector at the NICA Project	ion, rfq, heavy-ion, linac	1068
	A.V. Butenko, D.E. Donets, E.E. Donets, A.D. Kovalenko, A.O. Sidorin, A. Tuzikov JINR/VBLHEP, Moscow, Russia V. Aleksandrov, E.D. Donets, A. Govorov, V. Kobets, K.A. Levterov, I.N. Meshkov, V.A. Mikhaylov, V. Monchinsky, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia H. Hoeltermann, H. Podlech, U. Ratzinger, A. Schempp BEVATECH, Frankfurt, Germany T. Kulevoy, D.A. Liakin ITEP, Moscow, Russia
	The general goals of the Nuclotron-based Ion Collider fAcility (NICA) project at JINR (Dubna) are providing of colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics. The experiments will be performed in collider mode and at fixed target. The first part of the project program requires the collisions of heavy nuclei up to 197Au⁷⁹⁺ to be studied. The new heavy ion linac – HILac (Heavy Ion Linear Accelerator) will accelerate ions with q/A – values above 0.16 to 3.2 MeV/u is under manufacturing presently. The main features of HILac are described.

THPP108	Status of New 2.5 MeV Test Facility at SNS	rfq, ion, operation, neutron	1105
	A.V. Aleksandrov, M.S. Champion, M.T. Crofford, Y.W. Kang, A.A. Menshov, R.T. Roseberry, M.P. Stockli, A. Webster, R.F. Welton, A.P. Zhukov ORNL, Oak Ridge, Tennessee, USA K. Ewald Fermilab, Batavia, Illinois, USA M.E. Middendorf, S.N. Murray, R.B. Saethre ORNL RAD, Oak Ridge, Tennessee, USA
	Funding: Oak Ridge National Laboratory is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy A new 2.5Mev beam test facility is being built at SNS. It consists of a 65 keV H⁻ ion source, a 2.5MeV RFQ, a beam line with various beam diagnostics and a 6 kW beam dump. The facility is capable of producing one-ms-long pulses at 60Hz repetition rate with up to 50mA peak current. Commissioning with reduced average beam power is planned for fall 2014 to verify operation of all systems. The full power operation is scheduled to begin in 2015. Status of the facilty will be presented as well as discussion of the future R&D program.

THPP115	PKU 2.45 GHz Microwave Driven H⁻ Ion Source Performance Study	electron, ion, operation, experiment	1120
	T. Zhang, J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, J.F. Zhang, J. Zhao PKU, Beijing, People's Republic of China A.L. Zhang University of Chinese Academy of Sciences, Beijing, People's Republic of China
	Funding: This work is supported by the National Science Foundation of China (Grant Nos. 11175009, 91126004 and 11305004) 　　In a high intensity volume-produced H⁻ ion source, H⁻ ion production processes are great affected by electron temperature and gas pressure distribution within the discharge chamber. The H-/e ratio within an extracted H⁻ ion beam is much depended on the electron absorption within the extraction system. At Peking University (PKU), lots of experiments were carried out for better understanding H⁻ processes and electron dump on our 2.45 GHz microwave driven Cs-free permanent magnet volume-produced H⁻ source. Detail will be given in this paper. Author to whom correspondence should be addressed. Electronic mail: sxpeng@pku.edu.cn.
	Poster THPP115 [2.252 MB]

THPP138	Measurements of Beam Current and Energy-Dispersion for Ion Beam with Multi-Components	ion, vacuum, experiment, simulation	1185
	A.L. Zhang University of Chinese Academy of Sciences, Beijing, People's Republic of China J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, T. Zhang, J. Zhao PKU, Beijing, People's Republic of China J.E. Chen Graduate University, Chinese Academy of Sciences, Beijing, People's Republic of China
	Funding: This work is supported by the National Science Foundation of China（Grant Nos. 91126004). The multi-component ion beam is very common in nuclear physics, materials physics and most kind of ion source. But the diagnosis of multi-component ion beam [1] can be difficult because of its complex composition and irregular energy-dispersion. We need an effective way to analyzing the multi-component ion beam. There is a multi-component ion beam whose total beam current varies from 1 mA to 50mA and the beam energy can be 20keV to 150keV. In this paper, four methods to analyzing this multi-component ion beam are described, which are Faraday cup array method, fluorescent screen with Faraday cup, movable aperture with conductive fluorescent screen, and current calibration method, respectively. The distributions and currents of the separated ion beams are obtained by means of the four methods, and the current and energy-dispersion of each component might be measured at the same time. This is of special interest for beams with multi-components. Detailed description and comparison of the four methods are discussed in this paper. Correspondence Author:Peng ShiXiang. Email: sxpeng@pku.edu.cn
	Poster THPP138 [0.419 MB]

Paper

Title

Other Keywords

Page

MOPP063

Development of a Pepper Pot Emittance Measurement Device for FRANZ

emittance, ion, plasma, proton

199

B. Klump, U. Ratzinger, W. Schweizer, K. Volk
IAP, Frankfurt am Main, Germany

Funding: This work is supported by HGS-HIRe
Within the FRANZ project [*] on the Institute of Applied Physics, University Frankfurt, a robust and simple pepper pot emittance measurement device for high beam power densities is developed. To use the device directly behind the ion source, a high robustness against HV breakdowns is necessary. This paper gives an overview on experimental setup, on the analysis method and on imaging properties of the screen. Furthermore, the implemented software-based evaluation method is shown. It concludes with a preliminary emittance measurement on the high current ion source for FRANZ.
[*] U. Ratzinger et al., “intense Pulsed Neutron Source FRANZ in the 1-500 keV Range“, Proc. ICANS-XVIII, Dongguan, April 2007, p.210

MOPP086

Ecr Ion Sources Developments at INFN-LNS for the Production of High Brightness Highly Charged Ion Beams

plasma, ion, electron, ECRIS

254

D. Mascali, C. Altana, L. Andò, C. Caliri, G. Castro, L. Celona, S. Gammino, L. Neri, F.P. Romano, G. Torrisi
INFN/LNS, Catania, Italy
G. Sorbello
University of Catania, Catania, Italy

The design of future high-performing ECRIS will require alternative approaches in microwave-to-plasma coupling, in order to maximize the electron density at relatively low frequency and reduce the super-hot electrons formation and their consequences on the beam stability and on source reliability. On these purposes, different activities have been carried out at INFN-LNS in the recent past, including advanced modelling, diagnostics, and studies about alternative methods of plasma heating based on electrostatic-waves generation. A description of these activities will be presented, with special emphasis to the microwave to plasma coupling and to the plasma diagnostics. Some of the already collected results have been a basis for the design of the new AISHa source (for hadrontherapy purposes) and the construction of the innovative prototype named Flexible Plasma Trap: on this machine we will search for advanced schemes of microwave launching, now ongoing thanks to full-wave plus kinetic calculations of the wave-to-plasma interaction mechanism

MOPP101

Design of the 4MeV RFQ for the Helium Beam Irradiatior

rfq, controls, ion, cavity

294

H.-J. Kwon, Y.-S. Cho, H.S. Kim, K.T. Seol, Y.-G. Song
KAERI, Daejon, Republic of Korea

Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government.
A RFQ is considered as a main accelerator of the helium beam irradiation system for the power semiconductor in Korea Multipurpose Accelerator Complex (KOMAC). The RFQ was designed to accelerate the He²⁺ beam up 4MeV with 10mA peak beam current. We chose a vane type RFQ with 200MHz operating frequency. The RFQ will be operated with the frequency tracking mode supplied by the digital low level rf control system. In this paper, the design of the 4MeV RFQ is presented and the beam irradiation system including rf system, control system, utility system, is discussed.

MOPP112

Beam Dynamics of Multi Charge State Ions in RFQ Linac

ion, rfq, laser, acceleration

317

Y. Fuwa, S. Ikeda, M. Kumaki
RIKEN, Saitama, Japan
Y. Fuwa, Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
T. Kanesue, M. Okamura
BNL, Upton, Long Island, New York, USA

Laser ion source with DPIS (Direct Plasma Injection Scheme) is a promising candidate for a pre-injector of the high-intensity accelerator. Eliminating LEBT (Low Energy Beam Transport) where the space charge effect is severe, DPIS provides high current ion beam from laser plasma at the entrance of a RFQ linac and ion beams are injected directly into the RFQ linac. However, the injected beam consists of multi charge state ions and their behavior in RFQ linac has not been well understood. In this research, we study the beam dynamics of multi charge state ions in a RFQ. Using the result of computer simulation, a set of 100MHz 4-rod RFQ vanes, which accelerates Al 12+ ion among various charge states of aluminum ions from 8.9 keV/u to 200 keV/u, is newly designed and fabricated to be tested with beams. The result of beam acceleration test using the vane will be reported.

MOPP129

Status of the FETS Project

rfq, proton, emittance, ion

361

A.P. Letchford, M.A. Clarke-Gayther, D.C. Faircloth, S.R. Lawrie
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
S.M.H. Alsari, M. Aslaninejad, J.K. Pozimski, P. Savage
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
J.J. Back
University of Warwick, Coventry, United Kingdom
G.E. Boorman, A. Bosco, S.M. Gibson
Royal Holloway, University of London, Surrey, United Kingdom
R.T.P. D'Arcy, S. Jolly
UCL, London, United Kingdom
M. Dudman, J.K. Pozimski
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
D.C. Plostinar
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom

The Front End Test Stand (FETS) under construction at RAL is a demonstrator for front end systems of a future high power proton linac. Possible applications include a linac upgrade for the ISIS spallation neutron source, new future neutron sources, accelerator driven sub-critical systems, high energy physics proton drivers etc. Designed to deliver a 60mA H-minus beam at 3MeV with a 10% duty factor, FETS consists of a high brightness ion source, magnetic low energy beam transport (LEBT), 4-vane 324MHz radio frequency quadrupole, medium energy beam transport (MEBT) containing a high speed beam chopper and non-destructive laser diagnostics. This paper describes the current status of the project and future plans.

TUPP056

High Current Proton Beam Operation at GSI UNILAC

proton, ion, linac, operation

550

W.A. Barth, A. Adonin, P. Gerhard, M. Heilmann, R. Hollinger, W. Vinzenz, H. Vormann
GSI, Darmstadt, Germany

A significant part of the experimental program at FAIR is dedicated to pbar physics requiring a high number of cooled pbars per hour. The primary proton beam has to be provided by a 70 MeV proton linac followed by two synchrotrons. The new FAIR Proton LINAC will deliver a pulsed proton beam of up to 35 mA of 36 μs duration at a repetition rate of 4 Hz. The current GSI heavy ion linac (UNILAC) is able to deliver world record uranium beam intensities for injection into the synchrotrons, but it is not dedicated for FAIR relevant proton beam operation. In an advanced machine investigation program it could be shown, that the UNILAC is able to provide for sufficient high intensities of CH3-beam, cracked (and stripped) in a supersonic nitrogen gas jet into protons and carbon ions. This advanced operational approach results in up to 2 mA of proton intensity at a maximum beam energy of 20 MeV, 100 μs pulse duration and a rep. rate of 4 Hz. Recent linac beam measurements will be presented, showing that the UNILAC is able to serve as a proton FAIR injector for the first time, while the performance is limited to 17% of the FAIR requirements.

TUPP100

Operation Of The Versatile Accelerator Driving the Low Power ADS GUINEVERE at SCK•CEN

neutron, target, operation, ion

659

M.A. Baylac, A. Billebaud, P. Boge, D. Bondoux, J. Bouvier, S. Chabod, G. Dargaud, E. Froidefond, E. Labussière, R. Micoud, S. Rey
LPSC, Grenoble Cedex, France
A. Kochetkov, J. Mertens, F. Van Gestel, C. Van Grieken, B. Van Houdt, G. Vittiglio
SCK•CEN, Mol, Belgium
F.R. Lecolley, J.L. Lecouey, G. Lehaut, N. Marie-Nourry
CNRS/IN2P3/LPC CAEN, Caen, France

GUINEVERE provides a low power accelerator driven system (ADS) to investigate on-line reactivity monitoring and operational procedures of an ADS. It consists of a versatile neutron source, GENEPI-3C, driving the fast sub-critical core, VENUS-F, in SCK•CEN (Belgium). GENEPI-3C is an electrostatic accelerator generating 14 MeV neutrons by bombarding a 250 keV deuteron beam onto a tritium target located within the reactor core. This accelerator produces alternatively continuous beam (up to 1 mA DC), possibly chopped with fast and adjustable interruptions, or short and intense deuteron bunches (~25 mA peak, 1 μs). This paper presents the facility and assesses the 2 years of coupled operation of the accelerator to the reactor.

Slides TUPP100 [0.969 MB]

WEIOB01

Chopping High-Intensity Ion Beams at FRANZ

proton, ion, rfq, solenoid

765

C. Wiesner, M. Droba, O. Meusel, D. Noll, O. Payir, U. Ratzinger, P.P. Schneider
IAP, Frankfurt am Main, Germany

The accelerator-driven Frankfurt Neutron Source FRANZ is under construction at the science campus of Frankfurt University. Its Low-Energy Beam Transport (LEBT) line also serves as test stand for transport and chopping experiments with high-intensity ion beams. The high-current proton source was tested successfully with dc currents above 200 mA . The LEBT section consisting of four solenoids and a 250 kHz, 120 ns chopper was successfully commissioned using a helium test beam at low beam currents. Transport simulations including space-charge compensation and measurements are discussed. Simulations and experimental results of the novel LEBT chopper using a Wien-filter type field array and pulsed electrode voltages of up to ±6kV will be presented.

Slides WEIOB01 [7.925 MB]

THPP015

Status of the FAIR Proton Source and LEBT

linac, ion, diagnostics, proton

863

N. Chauvin, O. Delferrière, Y. Gauthier, P. Girardot, J.L. Jannin, A. Lotode, N. Misiara, J. Neyret, F. Senée, C.S. Simon, O. Tuske
CEA/IRFU, Gif-sur-Yvette, France
R. Berezov, J. Fils, P. Forck, R. Hollinger, V. Ivanova, C. Ullmann, W. Vinzenz
GSI, Darmstadt, Germany
A. Maugueret
CEA/DSM/IRFU, France

The unique Facility for Antiproton and Ion Research – FAIR will deliver stable and rare isotope beams covering a huge range of intensities and beam energies. A significant part of the experimental program at FAIR is dedicated to antiproton physics that requires an ultimate number 7x10¹⁰ cooled pbar/h. The high-intensity proton beam that is necessary for antiproton production will be deliver by a dedicated 75 mA/70 MeV proton linac. The injector section of this accelerator is composed by an ECR source, delivering a pulsed 100 mA H⁺ beam (4 Hz) at 95 keV and a low energy beam transport (LEBT) line required to match the beam for the RFQ injection. The proposed design for the LEBT is based on a dual solenoids focusing scheme. A dedicated chamber containing several diagnostics (Alisson scanner, Wien filter, SEM grid, Iris, Faraday Cup) will be located between the two solenoids. At the end of the beam line, an electrostatic chopper system is foreseen to inject up to 50μseconds long beam pulses into the RFQ. The status of LEBT simulations, design and fabrication of the FAIR proton injector will be presented.

THPP067

Status of the SPP RFQ Project

rfq, ion, cavity, diagnostics

1004

G. Turemen, B. Yasatekin
Ankara University, Faculty of Sciences, Ankara, Turkey
A. Alacakir
TAEK, Ankara, Turkey
G. Unel
UCI, Irvine, California, USA
H. Yildiz
Istanbul University, Istanbul, Turkey

The SPP project at TAEA will use 352.2 MHz 4-vane Radio Frequency Quadrupole (RFQ) to accelerate H⁺ ions from 20 KeV to 1.5 MeV. With the design already complete the project is at the test production phase. To this effect, a so called "cold model" of 50cm length has been produced to validate the design approach, to perform the low power RF tests and to evaluate possible production errors. This paper will report on the current status of the low energy beam transport line (LEBT) and RFQ cavity of the SPP project. It will also discuss the design and manufacturing of the RF power supply and its transmission line. In addition, the test results from some of the LEBT components will be shown and the final RFQ design will be shared.

Poster THPP067 [6.947 MB]

THPP094

The Heavy Ion Injector at the NICA Project

ion, rfq, heavy-ion, linac

1068

A.V. Butenko, D.E. Donets, E.E. Donets, A.D. Kovalenko, A.O. Sidorin, A. Tuzikov
JINR/VBLHEP, Moscow, Russia
V. Aleksandrov, E.D. Donets, A. Govorov, V. Kobets, K.A. Levterov, I.N. Meshkov, V.A. Mikhaylov, V. Monchinsky, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
H. Hoeltermann, H. Podlech, U. Ratzinger, A. Schempp
BEVATECH, Frankfurt, Germany
T. Kulevoy, D.A. Liakin
ITEP, Moscow, Russia

The general goals of the Nuclotron-based Ion Collider fAcility (NICA) project at JINR (Dubna) are providing of colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics. The experiments will be performed in collider mode and at fixed target. The first part of the project program requires the collisions of heavy nuclei up to 197Au⁷⁹⁺ to be studied. The new heavy ion linac – HILac (Heavy Ion Linear Accelerator) will accelerate ions with q/A – values above 0.16 to 3.2 MeV/u is under manufacturing presently. The main features of HILac are described.

THPP108

Status of New 2.5 MeV Test Facility at SNS

rfq, ion, operation, neutron

1105

A.V. Aleksandrov, M.S. Champion, M.T. Crofford, Y.W. Kang, A.A. Menshov, R.T. Roseberry, M.P. Stockli, A. Webster, R.F. Welton, A.P. Zhukov
ORNL, Oak Ridge, Tennessee, USA
K. Ewald
Fermilab, Batavia, Illinois, USA
M.E. Middendorf, S.N. Murray, R.B. Saethre
ORNL RAD, Oak Ridge, Tennessee, USA

Funding: Oak Ridge National Laboratory is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy
A new 2.5Mev beam test facility is being built at SNS. It consists of a 65 keV H⁻ ion source, a 2.5MeV RFQ, a beam line with various beam diagnostics and a 6 kW beam dump. The facility is capable of producing one-ms-long pulses at 60Hz repetition rate with up to 50mA peak current. Commissioning with reduced average beam power is planned for fall 2014 to verify operation of all systems. The full power operation is scheduled to begin in 2015. Status of the facilty will be presented as well as discussion of the future R&D program.

THPP115

PKU 2.45 GHz Microwave Driven H⁻ Ion Source Performance Study

electron, ion, operation, experiment

1120

T. Zhang, J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, J.F. Zhang, J. Zhao
PKU, Beijing, People's Republic of China
A.L. Zhang
University of Chinese Academy of Sciences, Beijing, People's Republic of China

Funding: This work is supported by the National Science Foundation of China (Grant Nos. 11175009, 91126004 and 11305004)
　　In a high intensity volume-produced H⁻ ion source, H⁻ ion production processes are great affected by electron temperature and gas pressure distribution within the discharge chamber. The H-/e ratio within an extracted H⁻ ion beam is much depended on the electron absorption within the extraction system. At Peking University (PKU), lots of experiments were carried out for better understanding H⁻ processes and electron dump on our 2.45 GHz microwave driven Cs-free permanent magnet volume-produced H⁻ source. Detail will be given in this paper.
Author to whom correspondence should be addressed. Electronic mail:
sxpeng@pku.edu.cn.

Poster THPP115 [2.252 MB]

THPP138

Measurements of Beam Current and Energy-Dispersion for Ion Beam with Multi-Components

ion, vacuum, experiment, simulation

1185

A.L. Zhang
University of Chinese Academy of Sciences, Beijing, People's Republic of China
J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, T. Zhang, J. Zhao
PKU, Beijing, People's Republic of China
J.E. Chen
Graduate University, Chinese Academy of Sciences, Beijing, People's Republic of China

Funding: This work is supported by the National Science Foundation of China（Grant Nos. 91126004).
The multi-component ion beam is very common in nuclear physics, materials physics and most kind of ion source. But the diagnosis of multi-component ion beam [1] can be difficult because of its complex composition and irregular energy-dispersion. We need an effective way to analyzing the multi-component ion beam. There is a multi-component ion beam whose total beam current varies from 1 mA to 50mA and the beam energy can be 20keV to 150keV. In this paper, four methods to analyzing this multi-component ion beam are described, which are Faraday cup array method, fluorescent screen with Faraday cup, movable aperture with conductive fluorescent screen, and current calibration method, respectively. The distributions and currents of the separated ion beams are obtained by means of the four methods, and the current and energy-dispersion of each component might be measured at the same time. This is of special interest for beams with multi-components. Detailed description and comparison of the four methods are discussed in this paper.
Correspondence Author:Peng ShiXiang.
Email: sxpeng@pku.edu.cn

Poster THPP138 [0.419 MB]