04 Hadron Accelerators
T28 Neutron Sources
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TUPAL010 Research on an Accelerator-Based BNCT Facility 1024
  • L. Lu, T. He, W. Ma, L.B. Shi, L.P. Sun, C.C. Xing, X.B. Xu, L. Yang
    IMP/CAS, Lanzhou, People's Republic of China
  Seven people have been diagnosed with cancer per minute in China, and cancer has been the leading cause of death with about one fourth of all deaths in China. As effective means and ways for cancer therapy, Boron Neutron Cancer Therapy (BNCT) has drawn greater attention. Accelerator based neutron source is a compact neutron source, and technologies of accelerating a high current beam has matured. We proposed an accelerator based BNCT (AB-BNCT), which can accelerate a 10 mA proton beam up to 7 MeV and target on a shelled-Beryllium. The dynamics of accelerators and neutron calculations will be reported in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL010  
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TUPAL041 Vacuum Accelerating Tube with Two Symmetrically Located Targets for Neutron Generation 1097
  • V.I. Rashchikov, A.A. Isaev, A.E. Shikanov
    MEPhI, Moscow, Russia
  Original neutron generator* on the base of pulse accelerating vacuum tube with two targets, symmetrically located on the both sides of deuteron source is discussed. Two immersion lenses in front of each other uses as accelerating and focusing systems. Lenses cathodes are Faraday cups with targets for neutron production on the bottom. Symmetric ring magnetic elements cover immersion lenses for correcting focusing conditions. Computer simulation allows us to choose electrodes geometry and accelerating pulse value for electron flow from ion-electron emission oscillate between the targets and provide device operate as reflective triode. Estimations of neutron flow and spatio-temporal neutron field structure are done.
* Patent RF N2467526, 14.06.2011
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL041  
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TUPAL042 On Possibility of Reflective Triode Uses for Thermonuclear Neutron Generation in Budker-Post Trap with Pulsed Magnetic Field 1100
  • V.I. Rashchikov, A.N. Didenko, A.A. Isaev, K.I. Kozlovskiy, V.L. Shatokhin, A.E. Shikanov, E.D. Vovchenko
    MEPhI, Moscow, Russia
  Scheme for thermonuclear neutron generation in compact Budker-Post trap with barrel-shaped pulsed magnetic field produced by two symmetrically located thin coils with diameter not exceed 0.05 m is proposed. During neutron generation in the trap simultaneously forms plasma which include hydrogen nuclides with density up to 1013 m-3 and two pulsed counter hydrogen nuclides flows accelerated in the diodes. Diodes consist of transparent anode with the form of sphere sector symmetrically covered by the same form grounded cathode. Diodes located symmetrically in front of each other, coaxially to magnetic trap. Computer simulation shows possibility to generate up to 1010 neutrons per pulse for deuterium-tritium compound in the diode system with transverse dimension ~0.1 m, amplitude and accelerating pulse duration 5.105 V and 100 nsec. The value of magnetic induction in the center of the trap should be approximately equal to 20 T.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL042  
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TUPAL058 Studies for Major ISIS Upgrades via Conventional RCS and Accumulator Ring Designs 1148
  • C.M. Warsop, D.J. Adams, H.V. Cavanagh, P.T. Griffin-Hicks, B. Jones, B.G. Pine, R.E. Williamson
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  ISIS is the spallation neutron source at the Rutherford Appleton Laboratory in the UK, which provides 0.2 MW of beam power via a 50 Hz, 800 MeV proton RCS. Detailed studies are now under way to find the optimal configuration for a next generation, short pulsed neutron source that will define a major ISIS upgrade in ~2031. Accelerator configurations being considered for the MW beam powers required include designs exploiting FFAG rings as well as conventional accumulator and synchrotron rings. This paper describes work exploring the latter, conventional options, but includes the possibility of pushing further toward intensity limits to reduce facility costs. The scope of planned studies is summarised, looking at optimal exploitation of existing ISIS infrastructure, and incorporating results from recent target studies and user consultations. Results from initial baseline studies for an accumulator ring and RCS located in the existing ISIS synchrotron hall are presented. Injection scheme, foil limits, longitudinal and transverse beam dynamics optimization with related beam loss and activation are outlined, as are results from detailed 3D PIC simulations.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL058  
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