Author: Weng, W.-T.
Paper Title Page
THPPR063 1 GeV CW Nonscaling FFAG for ADS, and Magnet Parameters 4118
  • F. Méot, W.-T. Weng
    BNL, Upton, Long Island, New York, USA
  • C. Johnstone
    Fermilab, Batavia, USA
  • P. Snopok
    Illinois Institute of Technology, Chicago, IL, USA
  Multi-MW proton driver capability remains a challenging, critical technology for many core HEP programs, particularly the neutrino ones such as the Muon Collider and Neutrino factory, and for next generation energy applications such as Accelerator Driven Subcritical Reactors (ADS) and Accelerator Transmutation of Waste for nuclear power and waste management. Work is focused almost exclusively on an SRF linac, as, to date, no re-circulating accelerator can attain the 10-20 MW capability necessary for the nuclear applications. Recently, the concept of isochronous orbits has been explored and developed for nonscaling FFAGs using powerful new methodologies in FFAG accelerator design. The FFAG can remain isochronous beyond the energy reach of cyclotrons and with fixed magnetic fields and strong focusing coupled to recent advances in tune stability, dynamic aperture, and footprint, serious study is underway on a potential application to the ADS problem. Work is progressing on a stable, high intensity, 0.25-1GeV isochronous FFAG. Development and studies of novel magnets with the nonlinear radial fields required to support isochronous operation are reported here.  
THPPR064 MW-class 800 MeV/n H2+ SC-Cyclotron for ADC application, Design Study and Goals 4121
  • F. Méot, T. Roser, W.-T. Weng
    BNL, Upton, Long Island, New York, USA
  • L. Calabretta
    INFN/LNS, Catania, Italy
  • A. Calanna
    CSFNSM, Catania, Italy
  A megawatt class isochronous cyclotron is a potential candidate for accelerator driven systems, as in the subcritical-fission molten-salt reactor application. A scheme for a 800 MeV/nucleon cyclotron accelerating molecular H2+ has been derived from on-going proton driver design studies for neutrino beam production. The present paper reports on beam dynamics studies regarding that cyclotron, exploiting its superconducting coil magnetic sector OPERA field map. These studies are aimed at assessing lattice properties as accelerated orbit, phase oscillations, tunes, beam envelopes and other resonance effects.