Author: Alonso, J.R.
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THPME077 Complex Beam Profile Reconstruction, A Novel Rotating Array of Vibrating Wires 3415
 
  • S.G. Arutunian
    ANSL, Yerevan, Armenia
  • J.R. Alonso
    LBNL, Berkeley, California, USA
 
  Proton/ion beams of multiple charge/mass ratio can be very complex. Orthogonal X-Y projections are often inappropriate to represent these profiles. An array of vibrating wires, rotating around the beam axis is under development. The mechanical implementation is described. An algorithm to reconstruct the profile is proposed. The tradeoffs between the number of wires, the rotation angles, the response time and the profile resolution are discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME077  
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MOPRI078 High Power Cyclotrons for Neutrino Experiments 788
 
  • D. Winklehner, J.R. Alonso, W.A. Barletta, A. Calanna, J.M. Conrad
    MIT, Cambridge, Massachusetts, USA
  • A. Adelmann
    PSI, Villigen PSI, Switzerland
  • L. Calabretta, D. Campo
    INFN/LNS, Catania, Italy
  • M. Shaevitz
    Columbia University, New York, USA
  • J.J. Yang
    CIAE, Beijing, People's Republic of China
 
  DAEδALUS* and IsoDAR** experiments needs large intense neutrino fluxes to investigate respectively the CP-Violation in the neutrino sector and the existence of sterile neutrino. DAEδALUS requires three neutrino sources driven by proton beams of ~800 MeV at powers of several megawatts placed at distances of 1.5, 8 and 20 km from the detector. Two cyclotrons working in cascade are chosen to deliver these high power beams. The first cyclotron accelerates the H2+ ions beam up to 60 MeV/amu. The beam is then extracted with an electrostatic deflector and reaccelerated up to 800 MeV/amu through a superconducting ring cyclotron. The acceleration of H2+ has two advantages: it reduces the space charge effect along the injection and acceleration inside the first cyclotron and allows the extraction of the beam from the last accelerator using a stripper foil. The injector cyclotron can be used in stand-alone mode to drive the IsoDAR experiment, which needs the accelerator placed near an underground neutrino detector. The design and the results of beam dynamic simulations will be shown. the results of preliminary injection and acceleration tests into a cyclotron test bench will be presented.
* J. Alonso et al., arXiv:1006.0260[physics.ins-det] (2010).
** A. Bungau et al., Phys. Rev. Lett. 109 141802 (2012).
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI078  
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THPRI083 Target Design for the ISODAR Neutrino Experiment 3964
 
  • A. Bungau, R.J. Barlow
    University of Huddersfield, Huddersfield, United Kingdom
  • J.R. Alonso, L.M. Bartoszek, J.M. Conrad, M. Moulai
    MIT, Cambridge, Massachusetts, USA
  • M. Shaevitz
    Columbia University, New York, USA
 
  This paper focuses on the design of a high-intensity antineutrino source from the production and subsequent decay of Li8. The Geant4 code is used to calculate the anti-neutrino flux that can be obtained along with the production of undesirable contaminants. We present in this paper the optimised design for the target, moderators, reflector and shielding. Engineering issues associated with this design are also discussed in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI083  
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