Author: Barlow, R.J.
Paper Title Page
MOOBA01 Thorium Energy Futures 29
  • S. Peggs, W. Horak, T. Roser
    BNL, Upton, Long Island, New York, USA
  • V.B. Ashley, R.F. Ashworth
    Jacobs Engineering, Pasadena, USA
  • R.J. Barlow, R. Cywinski, R. Seviour
    University of Huddersfield, Huddersfield, United Kingdom
  • J.-L. Biarrotte
    IPN, Orsay, France
  • S. Henderson
    Fermilab, Batavia, USA
  • A. Hutton
    JLAB, Newport News, Virginia, USA
  • J. Kelly
    Thor Energy, Oslo, Norway
  • M. Lindroos
    ESS, Lund, Sweden
  • P.M. McIntyre
    Texas A&M University, College Station, Texas, USA
  • A. Norlin
    IThEO, Sweden
  • H.L. Owen
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • G.T. Parks
    University of Cambridge, Cambridge, United Kingdom
  The potential for thorium as an alternative or supplement to uranium in fission power generation has long been recognised, and several reactors, of various types, have already operated using thorium-based fuels. Accelerator Driven Subcritical (ADS) systems have benefits and drawbacks when compared to conventional critical thorium reactors, for both solid and molten salt fuels. None of the four options – liquid or solid, with or without an accelerator – can yet be rated as better or worse than the other three, given today's knowledge. We outline the research that will be necessary to lead to an informed choice.  
slides icon Slides MOOBA01 [3.887 MB]  
MOEPPB003 Status of the PRISM FFAG Design for the Next Generation Muon-to-Electron Conversion Experiment 79
  • J. Pasternak, A. Alekou, M. Aslaninejad, R. Chudzinski, L.J. Jenner, A. Kurup, Y. Shi, Y. Uchida
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • R. Appleby, H.L. Owen
    UMAN, Manchester, United Kingdom
  • R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  • K.M. Hock, B.D. Muratori
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • D.J. Kelliher, S. Machida, C.R. Prior
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  • Y. Kuno, A. Sato
    Osaka University, Osaka, Japan
  • J.-B. Lagrange, Y. Mori
    Kyoto University, Research Reactor Institute, Osaka, Japan
  • M. Lancaster
    UCL, London, United Kingdom
  • C. Ohmori
    KEK, Tokai, Ibaraki, Japan
  • T. Planche
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
  • S.L. Smith
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • H. Witte
    BNL, Upton, Long Island, New York, USA
  • T. Yokoi
    JAI, Oxford, United Kingdom
  The PRISM Task Force continues to study high intensity and high quality muon beams needed for next generation lepton flavor violation experiments. In the PRISM case such beams have been proposed to be produced by sending a short proton pulse to a pion production target, capturing the pions and performing RF phase rotation on the resulting muon beam in an FFAG ring. This paper summarizes the current status of the PRISM design obtained by the Task Force. In particular various designs for the PRISM FFAG ring are discussed and their performance compared to the baseline one, the injection/extraction systems and matching to the solenoid channels upstream and downstream of the FFAG ring are presented. The feasibility of the construction of the PRISM system is discussed.  
MOPPC080 Modeling Space Charge in an FFAG with Zgoubi 322
  • S.C. Tygier, R. Appleby, H.L. Owen
    UMAN, Manchester, United Kingdom
  • R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  The Zgoubi particle tracker uses a ray tracing algorithm that can accurately track particles with large offset from any reference momentum and trajectory, making it suitable for FFAGs. In high current FFAGs, for example an ADSR driver, space charge has a significant effect on the beam. A transverse space charge model was added to Zgoubi using the interface pyZgoubi. The magnets are sliced and a space charge kick is applied between each slice. Results are presented for an ADSR driver lattice.  
THPPR061 Optimisation Studies of Accelerator Driven Fertile to Fissile Conversion Rates in Thorium Fuel Cycle 4112
  • C. Bungau, R.J. Barlow, R. Cywinski
    University of Huddersfield, Huddersfield, United Kingdom
  The need for proliferation-resistance, longer fuel cycles, higher burn up and improved waste form characteristics has led to a renewed worldwide interest in thorium-based fuels and fuel cycles. In this paper the GEANT4 Monte Carlo code has been used to simulate the Thorium-Uranium fuel cycle. The accelerator driven fertile to fissile conversion rates have been calculated for various geometries. Several new classes have been added by the authors to the GEANT4 simulation code, an extension which allows the state-of-the-art code to be used for the first time for nuclear reactor criticality calculations.  
THPPR073 Target Studies for the Production of Lithium 8 for Neutrino Physics Using a Low Energy Cyclotron 4145
  • A. Bungau, R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  • J.M. Conrad, J. Spitz
    MIT, Cambridge, Massachusetts, USA
  • M. Shaevitz
    Columbia University, New York, USA
  Lithium 8 is a short lived beta emitter producing a high energy anti-neutrino, which is very suitable for making several measurements of fundamental quantities. It is proposed to produce Lithium 8 with a commercially available 60 MeV cyclotron using protons or alpha particles on a Beryllium 9 target. We have used the GEANT4 program to model these processes, and calculate the antineutrino fluxes that could be obtained in a practical system. We also calculate the production of undesirable contaminants such as Boron 8, and show that these can be reduced to a very low level.  
THPPR074 Simulations of Pion Production in the DAEδALUS Target 4148
  • A. Bungau, R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  • J.M. Conrad, T. Smidt, J. Spitz
    MIT, Cambridge, Massachusetts, USA
  • M. Shaevitz
    Columbia University, New York, USA
  DAEδALUS, the Decay At-rest Experiment for δCP At the Laboratory for Underground Science will look for evidence of CP-violation in the neutrino sector, which may explain the matter/antimatter asymmetry in our universe. It will make precision measurements of oscillations of anti-muon neutrinos to anti-electron neutrinos using multiple neutrino sources created by low-cost compact cyclotrons. DAEδALUS will utilize a decay-at-rest neutrino beam produced by 800 MeV protons impacting a graphite target. Two well established Monte Carlo codes, MARS and GEANT4, have been used to optimize the design and the performance of the target. A benchmarking of the results obtained with these codes is also presented in this paper.  
THPPR075 The UK MEIS Facility : A New Future 4151
  • R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  The Medium Energy Ion Scattering facility at the Daresbury Laboratory, one of only ~10 such facilities in the world, has served the UK community since 1996. It provides a 50-400 keV ion beam and a very comprehensive experimental station where samples can be studied and the energies and angles of the recoil ions measured. It is now closing, but will be be relocated some 50 miles to the University of Huddersfield: it should be recommissioned and available to users in early 2012. We will report on progress, and on the facilities which will be available for users at the new site and under the new management.  
THPPR076 Optimising Neutron Production From Compact Low Energy Accelerators 4154
  • N. Ratcliffe, R.J. Barlow, A. Bungau, R. Cywinski
    University of Huddersfield, Huddersfield, United Kingdom
  • T.R. Edgecock
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  There is currently much development in accelerator based methods to provide flexible and reliable neutron generators, in response to a decline in the availability of nuclear reactors. In this paper the focus is on neutron production via a low energy DC proton accelerator (1-10 MeV) and light target system. GEANT4 simulations are being used to study various aspects of target design, beginning with studies into light targets, such as lithium and beryllium, which are already in use. Initially the aim is to replicate these designs and benchmark these simulations, with other models and experimental results, before investigating how modifications can improve neutron production and tailor experimental geometries to specific applications such as neutron capture therapy and medical isotope production.