Keyword: neutron
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MOPO009 Study on the Extraction of a Compact Cyclotron for BNCT extraction, cyclotron, focusing, emittance 73
 
  • L.Y. Ji, S. An, T.J. Bian, F.P. Guan, S.M. Wei, H.D. Xie, J.S. Xing
    CIAE, Beijing, People’s Republic of China
 
  An 18 MeV, 1 mA H compact cyclotron is under design at China Institute of Atomic Energy (CIAE). The proton beam bombards a beryllium target, producing high-flux neutron beam for Boron Neutron Capture Therapy (BNCT). Stripping extraction is adopted in this cyclotron. The position of the stripping point affects the trajectory and beam quality of the extracted beam. In this paper, we use orbit-tracking method to simulate the beam trajectory and emittance with different positions and tilt angles of stripping foil, and adopt the extraction point whose radius is 53.6 cm, azimuth is 57° and the tilt angle of the stripping foil is 15°.  
poster icon Poster MOPO009 [1.696 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO009  
About • Received ※ 31 December 2022 — Revised ※ 28 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 07 March 2023
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TUBO01 Measurement of Detector Response Functions for Fast Neutron Spectroscopy with Organic Scintillators detector, target, proton, radiation 121
 
  • T. Hutton, A. Buffler, E. Jarvie, K. Maibane, N.B. Ndabeni
    UCT Physics, Cape Town, South Africa
 
  Spectrum unfolding decouples spectroscopic measurements of neutron fields from accelerator facilities by making use of a well-characterised detector response matrix. Measurements of detector response matrices, derived from time-of-flight, were made at the fast neutron facility at iThemba LABS, South Africa, with neutrons with energies between 10 - 65 MeV for: a traditional BC-501A organic liquid scintillator detector with photomultiplier tube and analogue pulse processing and acquisition; and a modern system comprised of an EJ-276 plastic scintillator, silicon photomultiplier and digital pulse processing and acquisition. The detector response matrices were validated by unfolding neutron energy spectra from measured light output spectra, and compared to the associated energy spectra derived from time-of-flight. Both detector systems demonstrated good agreement between the energy spectra derived from time-of-flight, which is promising for fast neutron spectroscopy with organic scintillators in environments outside of the laboratory.  
slides icon Slides TUBO01 [5.487 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUBO01  
About • Received ※ 22 December 2022 — Revised ※ 13 February 2023 — Accepted ※ 18 February 2023 — Issue date ※ 12 March 2023
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TUBO03 Application Progress of CYCIAE-100 High Current Proton Cyclotron proton, radiation, target, cyclotron 130
 
  • L.C. Cao, X.L. Jia, Z.W. Liu, G.F. Song, T.J. Zhang
    CIAE, Beijing, People’s Republic of China
 
  A new RIB facility, Beijing radioactive ion-beam facility (BRIF) had been constructed at CIAE. A 100 MeV H cyclotron (CYCIAE-100) is selected as the driving accelerator which can provide a 70 - 100 MeV, 10 pA - 520 µA proton beam for basic and applied research in the field of nuclear science and technology. The application of this facility has promoted the development of frontier scientific research in China, such as radioactive nuclear beam physics, nuclear data, neutron physics and space radiation effects. Recently, quasi-monoenergetic neutron source above 20 MeV and the white light neutron source with the best time resolution were completed, which had filled the gap in the measurement of neutron data in the range of energy of 100 MeV in China. In this paper, the main milestones in the use and development of CYCIAE-100 high current proton cyclotron are reviewed, the scientific applications based on platform are described, and the important topics in proton applications based on intermediate energy are discussed, including space radiation hardening, neutron standard radiation field and biological radiation damage mechanism.  
slides icon Slides TUBO03 [7.851 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUBO03  
About • Received ※ 31 December 2022 — Revised ※ 24 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 25 June 2023
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WEBI02 Compact Accelerator Based Epithermal Neutron Source and Its Application for Cancer Therapy radiation, simulation, experiment, cyclotron 176
 
  • N.H. Hu, T. Aihara
    OMPU, Takatsukishi, Japan
 
  The world’s first accelerator based epithermal neutron source for clinical boron neutron capture therapy (BNCT) was designed, developed, and commissioned between 2008 to 2010 by Sumitomo Heavy Industries in collaboration with Kyoto University at the Kyoto University Institute for Integrated Radiation and Nuclear Science. The cyclotron-based accelerator device can accelerate a proton up to an energy of roughly 30 MeV. When the proton contacts the beryllium target, fast neutrons are created that travel through a beam shaping assembly made of calcium fluoride, lead, iron, and aluminum to lower the neutron energy to the epithermal region, which is ideal for BNCT (10 keV). With a proton current of 1 mA, the system is intended to produce epithermal neutron flux of up to 1.2×109 cm-2 s−1. In 2017, the same type of accelerator was installed at the Kansai BNCT Medical Center and in March 2020 the system received medical device approval in Japan (Sumitomo Heavy Industries, NeuCure® BNCT system). Soon after, BNCT for unresectable, locally advanced, and recurrent carcinoma of the head and neck region was approved by the Japanese government for reimbursement covered by the national health insurance system. Thus far, over 100 patients have been treated using this system.  
slides icon Slides WEBI02 [8.080 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEBI02  
About • Received ※ 27 March 2023 — Revised ※ 22 May 2023 — Accepted ※ 06 July 2023 — Issue date ※ 17 July 2023
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THPO003 Applications of the CYCIAE-100 Cyclotron in Neutron-Induced Single Event Effect proton, radiation, target, electron 295
 
  • Q. Chen, J. Bao, G. Guo, J.H. Han, X. Ma, H.Y. Zhao
    CIAE, Beijing, People’s Republic of China
 
  Neutron-induced single event effect is one of the significant factors affecting the reliability of semiconductor devices in avionics and ground facilities. The 100 MeV proton cyclotron in China Institute of Atomic Energy (Cyciae-100) provides white neutron and quasi-monoenergetic neutron induced by proton and W/Li bombardment. Based on the white neutron beam line of Cyciae-100, the white neutron energy spectrum is measured by neutron time-of-flight method with double scintillator spectrometer, as well as the theoretical energy spectrum calculated by the Monte Carlo method. The neutron irradiation test of two SRAMs with different technology nodes were carried out, and the neutron single event upset sections are obtained simultaneously. In addition, based on the quasi-monoenergetic neutron beam line, the simulation of neutron energy spectrum and experimental measurement of neutron single event upset cross section for SRAMs were carried out. As a conclusion, the white neutron and quasi-monoenergetic neutron provided by Cyciae-100 are well suitable applied to the study of neutron single event effects.  
poster icon Poster THPO003 [0.726 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO003  
About • Received ※ 31 December 2022 — Revised ※ 21 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 02 April 2023
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THPO005 JULIC - Driver Accelerator for HBS experiment, cyclotron, target, controls 303
 
  • O. Felden, V. Kamerdzhiev
    FZJ, Jülich, Germany
  • R. Gebel, K. Grigoryev, Y. Valdau
    GSI, Darmstadt, Germany
 
  At the Forschungszentrum Jülich (FZJ) the energy variable cyclotron JULIC is used as injector of the Cooler Synchrotron (COSY) and for low to medium current irradiations of different types. At the NESP-Target station a Target-Moderator-Reflector (TMR) -demonstrator of the proposed accelerator driven High Brilliance Neutron source (HBS) was set up with the Jülich Center of Neutron Science (JCNS). Beside showing the functionality of the TMR-Design the demonstrator gives the possibility to test new target materials, different types and concepts of moderators and at least the handling of irradiated targets and components. The TMR- target station is installed inside an Experimental area offering space for complex detector and component setups for nuclear and neutron related experiments like ToF-experiments or neutron imaging e.g. But it is used for other purposes like irradiation and electronic or detector tests as well. Additionally to the TMR, the extraction beamline from JULIC to the TMR was set up and equipped with a fast kicker and a 3-field permanent magnet, as foreseen in in HBS to deliver the beam to different target stations within a sophisticated pulsing scheme, synchronized with the beam pulsing done at JULIC, using fast deflection plates. This report briefly summarizes the history of JULIC and the activities for its future perspectives.  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO005  
About • Received ※ 07 December 2022 — Revised ※ 18 January 2023 — Accepted ※ 17 February 2023 — Issue date ※ 27 February 2023
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FRAO02 Feasibility Study on 10 MW-Class Ultra-High Power Cyclotron cyclotron, resonance, extraction, cavity 359
 
  • T.J. Bian, S. An, F.P. Guan, L.Y. Ji, S.M. Wei
    CIAE, Beijing, People’s Republic of China
 
  10MW-class ultra-high power cyclotron (UHPC) has great application prospects in cutting-edge sciences, neutron source, advanced energy and advanced material, etc. So far, Cyclotron with average beam power of 10 MW still have some bottleneck problems. Beam energy and current of a high-power cyclotron is typically less than 800MeV and 3mA. In this paper, bottleneck problems of UHPC are analysed, and then a preliminary design of UHPC-10MW is presented.  
slides icon Slides FRAO02 [15.273 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-FRAO02  
About • Received ※ 31 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 07 July 2023 — Issue date ※ 20 July 2023
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