Keyword: neutron
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MOPOGE09 Commissioning Status of the iBNCT Accelerator target, operation, rfq, radiation 164
 
  • M. Sato, Z. Fang, M.K. Fukuda, Y. Fukui, K. Futatsukawa, K. Ikegami, H. Kobayashi, C. Kubota, T. Kurihara, T. Miura, T. Miyajima, F. Naito, K. Nanmo, T. Obina, T. Shibata, T. Sugimura, A. Takagi
    KEK, Ibaraki, Japan
  • H. Kumada, Y. Matsumoto, Su. Tanaka
    Tsukuba University, Graduate School of Comprehensive Human Sciences, Ibaraki, Japan
  • N. Nagura, T. Ohba
    Nippon Advanced Technology Co., Ltd., Tokai, Japan
  • H. Oguri
    JAEA/J-PARC, Tokai-mura, Japan
  • T. Toyoshima
    ATOX, Ibaraki, Japan
 
  An accelerator-based boron neutron capture therapy (BNCT) has been studied intensively in recent years as one of the new cancer therapies after many clinical research with nuclear reactors. In the iBNCT project, the accelerator configuration consists of an RFQ and a DTL which have proven achievements in J-PARC. Meanwhile, a high duty factor is required to have a sufficient thermal neutron flux needed by BNCT treatments. After a failure of the klystron power supply occurred in Feb. 2019, beam operation was resumed in May 2020. To date, an average current of about 2 mA with the beam repetition rate of 75 Hz has been achieved with stable operation. Irradiation tests with cells and mice are ongoing together with characteristic measurements of the neutron beam. In parallel with that, we have been gradually improving the accelerator cooling-water system for further stability. In this contribution, the present status and prospects of the iBNCT accelerator are reported.  
slides icon Slides MOPOGE09 [0.852 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE09  
About • Received ※ 12 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 02 September 2022 — Issue date ※ 30 September 2022
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MOPOGE12 Cavity R&D for HBS Accelerator cavity, simulation, brilliance, proton 174
 
  • N.F. Petry, K. Kümpel, S. Lamprecht, O. Meusel, H. Podlech, M. Schwarz
    IAP, Frankfurt am Main, Germany
 
  The demand for neutrons of various types for research is growing day by day worldwide. To meet the growing demand the Jülich High Brilliance Neutron Source (HBS) is in development. It is based on a high power linear proton accelerator with an end energy of 70 MeV and a proton beam current of 100 mA. The main part of the accelerator consists of about 45 CH-type cavities. As the current beam dynamic layout is still work in progress the number of cavities can change for the final design. For this beam dynamic layout the design of the CH-type cavities was optimized to handle the high accelerating gradient. The results of the performance of the CH-type cavities will be presented in this paper.  
poster icon Poster MOPOGE12 [1.286 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE12  
About • Received ※ 17 August 2022 — Revised ※ 26 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 15 September 2022
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MOPOGE18 Design of IH-DTL to Accelerate Intense Lithium-Ion Beam for Compact Neutron Source DTL, linac, rfq, ion-source 194
 
  • S. Ikeda, T. Kanesue, M. Okamura
    BNL, Upton, New York, USA
 
  We are studying feasibility of a compact neutron source with a lithium-ion beam driver. The neutron source com-prises a laser ion source, an RFQ linac, and an IH-DTL. Recently, we demonstrated 35-mA 7Li3+ ion beam acceler-ation by an RFQ linac with a laser ion source. Based on the result, we performed beam dynamic design of an IH-DTL to accelerate the lithium-ion beam to the energy required for the neutron production, 14 MeV. To obtain a realistic field distribution, we made a rough model of the IH-DTL cavity with Microwave studio. It was confirmed with GPT 3D beam simulation that 1.7-m and 200-kW IH-DTL with two triplets can accelerate 30-mA 7Li3+ beam.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE18  
About • Received ※ 02 September 2022 — Revised ※ 05 September 2022 — Accepted ※ 09 September 2022 — Issue date ※ 13 October 2022
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MOPORI12 Development of Commercial RFQ Toward CW Applications cavity, rfq, MMI, operation 255
 
  • H. Yamauchi, M. Masuoka
    Time Corporation, Hiroshima, Japan
 
  TIME Co. developed a new 4-vane RFQ structure that can be used for a very high-duty factor operation. We eliminated the tuners to flatten the field distribution. The tuners increase RF contacts which may trigger unex-pected local heat spots and subsequent discharges. In addition, we hollowed out the entire vane to achieve large cooling water channels. A high-power test showed that the commissioning was completed within one day. We could input a nominal RF power without experienc-ing almost any discharge. The applied duty factor was 5 % at the 200 MHz resonant frequency, and the meas-ured frequency shift was not detected.
These activities have been carried out in collaboration with Tokyo Institute of Technology and RIKEN.
 
slides icon Slides MOPORI12 [1.877 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI12  
About • Received ※ 26 August 2022 — Revised ※ 04 September 2022 — Accepted ※ 27 September 2022 — Issue date ※ 29 September 2022
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TUPOJO01 Commissioning Plan of the IFMIF-DONES Accelerator MMI, linac, rfq, target 330
 
  • I. Podadera, A. Ibarra, M. Weber
    Consorcio IFMIF-DONES España, Granada, Spain
  • J. Aguilar, S. Becerril-Jarque, M. Luque, J. Maestre, D. Sánchez-Herranz, C. Torregrosa
    UGR, Granada, Spain
  • F. Arranz, M. García, A. Ibarra, D. Jimenez-Rey, J. Mollá, C. Oliver, I. Podadera, D. Regidor, M. Weber, C. de la Morena
    CIEMAT, Madrid, Spain
  • L. Bellan, A. Palmieri, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • D. Bernardi, G. Micciché, F.S. Nitti
    ENEA Brasimone, Centro Ricerche Brasimone, Camugnano, BO, Italy
  • B. Bolzon, N. Chauvin, S. Chel, A. Madur
    CEA-IRFU, Gif-sur-Yvette, France
  • P. Cara, G. Duglue
    Fusion for Energy, Garching, Germany
  • J. Castellanos
    Universidad de Castilla-La Mancha, Ciudad Real, Spain
  • T. Dézsi
    CER, Budapest, Hungary
  • M.J. Ferreira
    Lund University, Faculty of Engineering (LTH), Lund, Sweden
  • V. Hauer, Y.F. Qiu
    KIT, Eggenstein-Leopoldshafen, Germany
  • W. Królas, U. Wiacek
    IFJ-PAN, Kraków, Poland
  • T. Lehmann
    Karlsruher Institut für Technologie, Institut für Fördertechnik und Logistiksysteme, Karlsruhe, Germany
  • L. Macià, M. Sanmartí, B.K. Singh
    IREC, Sant Adria del Besos, Spain
  • C.A. Martins
    Lund University, Lund, Sweden
  • C. Prieto
    Empresarios Agrupados, Madrid, Spain
 
  Funding: Funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 - EUROfusion)
IFMIF-DONES (International Fusion Materials Irradiation Facility- DEMO-Oriented Neutron Early Source) - a powerful neutron irradiation facility for studies and certification of materials to be used in fusion reactors - is planned as part of the European roadmap to fusion electricity. Its main goal will be to characterize and to qualify materials under irradiation in a neutron field similar to the one faced in a fusion reactor. The intense neutron source is produced by impinging deuterons, from high-power linear deuteron accelerator, on a liquid lithium curtain. The facility has accomplished the preliminary design phase and is currently in its detailed design phase. At the present stage, it is important to have a clear understanding of how the commissioning of the facility will be performed, especially the commissioning of a 5 MW CW deuteron beam, together with the lithium curtain and the beam optimization for the neutron irradiation. In this contribution, the present plans for the hardware and beam commissioning of the accelerator will be given, focusing on the most critical aspects of the tiered approach and on the integration of the procedure with the lithium and tests systems.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO01  
About • Received ※ 24 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 02 September 2022
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TUPOJO18 Cavity Qualification and Production Update for SNS-PPU Cryomodules at Jefferson Lab cavity, cryomodule, proton, SRF 387
 
  • P. Dhakal, E. Daly, J.F. Fischer, N.A. Huque
    JLab, Newport News, Virginia, USA
  • M.P. Howell
    ORNL, Oak Ridge, Tennessee, USA
  • J.D. Mammosser
    ORNL RAD, Oak Ridge, Tennessee, USA
 
  Funding: This manuscript has been authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177.
The Proton Power Upgrade (PPU) project at Oak Ridge National Lab’s Spallation Neutron Source (SNS) currently being constructed will double the proton beam power capability from 1.4 to 2.8 MW by adding seven cryomodules, each containing four six-cell high-beta (β = 0.81) superconducting radio frequency cavities. Research Instruments, located in Germany, built and processed the cavities at the vendor site, including electropolishing as the final active chemistry step. Twenty-eight cavities for seven cryomodules and an additional four cavities for a spare cryomodules were delivered to Jefferson Lab and first qualification tests were completed on all cavities as received from the vendor. The performance largely exceeded the requirements on quality factor and accelerating gradient. Here we present the status of initial cavity qualification tests, rework on unqualified cavities and final cavity qualification with helium vessel prior to installation in cryomodules. In addition, an update on cryomodule production is presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO18  
About • Received ※ 23 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 09 September 2022
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TUPOJO19 Progress on the Proton Power Upgrade Project at the Spallation Neutron Source target, cryomodule, injection, proton 390
 
  • M.S. Champion, C.N. Barbier, M.S. Connell, J. Galambos, M.P. Howell, S.-H. Kim, J.S. Moss, B.W. Riemer, K.S. White
    ORNL, Oak Ridge, Tennessee, USA
  • E. Daly
    JLab, Newport News, Virginia, USA
  • N.J. Evans, G.D. Johns
    ORNL RAD, Oak Ridge, Tennessee, USA
  • D.J. Harding
    Fermilab, Batavia, Illinois, USA
 
  Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract number DE-AC05-00OR22725.
The Proton Power Upgrade Project at the Spallation Neutron Source at Oak Ridge National Laboratory will increase the proton beam power capability from 1.4 to 2.8 MW. Upon completion of the project, 2 MW of beam power will be available for neutron production at the existing first target station with the remaining beam power available for the future second target station. The project will install seven superconducting RF cryomodules and supporting RF power systems and ancillaries to increase the beam energy to 1.3 GeV . The injection and extraction region of the accumulator ring will be upgraded, and a new 2 MW mercury target has been developed along with supporting equipment for high-flow gas injection to mitigate cavitation and fatigue stress. Equipment is being received from vendors and partner laboratories, and installation is underway with three major installation outages planned in 2022-2024. The project is planned to be completed in 2025.
 
poster icon Poster TUPOJO19 [1.361 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO19  
About • Received ※ 22 August 2022 — Revised ※ 15 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 01 September 2022
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TUPORI05 Beam Dynamic Simulations for the DTL Section of the High Brilliance Neutron Source cavity, linac, emittance, quadrupole 556
 
  • S. Lamprecht, M. Droba, K. Kümpel, O. Meusel, N.F. Petry, H. Podlech, M. Schwarz, C. Zhang
    IAP, Frankfurt am Main, Germany
 
  As various experimental reactors in Europe are already or will be decommissioned over the next years, new neutron sources will be necessary to meet the demand for neutrons in research and development. The High Brilliance Neutron Source is an accelerator driven neutron source planned at the Forschungszentrum Jülich. The accelerator will accelerate a proton beam of 100 mA up to an end energy of 70 MeV, using 45 normal conducting CH-type cavities. Due to the high beam current, the beam dynamics concept requires special care. In this paper, the current status of the beam dynamics for the drift tube linac is presented.  
poster icon Poster TUPORI05 [0.917 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPORI05  
About • Received ※ 23 August 2022 — Revised ※ 24 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 01 September 2022
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FR1AA05 Design Considerations for a Proton Linac for a Compact Accelerator Based Neutron Source DTL, MEBT, emittance, rfq 878
 
  • M. Abbaslou
    UVIC, Victoria, Canada
  • A. Gottberg, O.K. Kester, R.E. Laxdal, M. Marchetto
    TRIUMF, Vancouver, Canada
  • D.D. Maharaj, D. Marquardt
    University of Windsor, Windsor, Ontario, Canada
  • S. Tabbassum
    Purdue University, West Lafayette, Indiana, USA
 
  New neutron sources are needed both for Canada and internationally as access to reactor based neutrons shrinks. Compact Accelerator-based Neutron Sources (CANS) offer the possibility of an intense source of pulsed neutrons with a capital cost significantly lower than spallation sources. In an effort to close the neutron gap in Canada a prototype, Canadian compact accelerator-based neutron source (PC-CANS) is proposed for installation at the University of Windsor. The PC-CANS is envisaged to serve two neutron science instruments, a boron neutron capture therapy (BNCT) station and a beamline for fluorine-18 radioisotope production for positron emission tomography (PET). To serve these diverse applications of neutron beams, a linear accelerator solution is selected, that will provide 10 MeV protons with a peak current of 10 mA within a 5% duty cycle. The accelerator is based on an RFQ and DTL with a post-DTL pulsed kicker system to simultaneously deliver macro-pulses to each end-station. Several choices of Linac technology are being considered and a comparison of the choices will be presented.  
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slides icon Slides FR1AA05 [1.945 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-FR1AA05  
About • Received ※ 27 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 03 September 2022
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