Author: Delayen, J.R.
Paper Title Page
SUPB026 Multipacting Analysis of High-velocity Superconducting Spoke Resonators 68
 
  • C.S. Hopper, J.R. Delayen
    ODU, Norfolk, Virginia, USA
 
  Some of the advantages of superconducting spoke cavities are currently being investigated for the high-velocity regime. When determining a final, optimized geometry, one must consider the possible limiting effects multipacting could have on the cavity. We report on the results of analytical calculations and numerical simulations of multipacting electrons in superconducting spoke cavities and methods for reducing their impact.  
 
SUPB038 Multipole Field Effects for the Superconducting Parallel-Bar Deflecting/Crabbing Cavities 92
 
  • S.U. De Silva, J.R. Delayen
    ODU, Norfolk, Virginia, USA
  • S.U. De Silva
    JLAB, Newport News, Virginia, USA
 
  The superconducting parallel-bar deflecting/crabbing cavity is currently being considered as one of the design options in rf separation for the Jefferson Lab 12 GeV upgrade and for the crabbing cavity for the proposed LHC luminosity upgrade. Knowledge of multipole field effects is important for accurate beam dynamics study of rf structures. The multipole components can be accurately determined numerically using the electromagnetic surface field data in the rf structure. This paper discusses the detailed analysis of those components for the fundamental deflecting/crabbing mode and higher order modes in the parallel-bar deflecting/crabbing cavity.  
 
MOPB056 Multipacting Analysis of High-Velocity Superconducting Spoke Resonators 303
 
  • C.S. Hopper, J.R. Delayen
    ODU, Norfolk, Virginia, USA
 
  Some of the advantages of superconducting spoke cavities are currently being investigated for the high-velocity regime. When determining a final, optimized geometry, one must consider the possible limiting effects multipacting could have on the cavity. We report on the results of analytical calculations and numerical simulations of multipacting electrons in superconducting spoke cavities and methods for reducing their impact.  
 
MOPB072 Multipole Expansion of the Fields in Superconducting High-Velocity Spoke Cavities 345
 
  • R.G. Olave, J.R. Delayen, C.S. Hopper
    ODU, Norfolk, Virginia, USA
 
  Multi-spokes superconducting cavities in the high-beta regime are being considered for a number of applications. In order to accurately model the dynamics of the particles in such cavities, knowledge of the fields off-axis are needed. We present a study of the multipoles expansion of the fields from an EM simulation field data for a two-spoke cavity operating at 325 MHz, β = 0.82 and 500 MHz, β = 1.  
 
TH1A03 Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs 758
 
  • J.R. Delayen
    ODU, Norfolk, Virginia, USA
 
  Spoke resonantors are currently under development for many proton machines but these structures are also considered for high beta electron linacs as well. These structures compare well to traditional elliptical cavities.  
slides icon Slides TH1A03 [3.570 MB]  
 
THPB062 Multipole Field Effects for the Superconducting Parallel-Bar/RF-Dipole Deflecting/Crabbing Cavities 981
 
  • S.U. De Silva, J.R. Delayen
    ODU, Norfolk, Virginia, USA
  • S.U. De Silva
    JLAB, Newport News, Virginia, USA
 
  The superconducting parallel-bar deflecting/crabbing cavity is currently being considered as one of the design options in rf separation for the Jefferson Lab 12 GeV upgrade and for the crabbing cavity for the proposed LHC luminosity upgrade. Knowledge of multipole field effects is important for accurate beam dynamics study of rf structures. The multipole components can be accurately determined numerically using the electromagnetic surface field data in the rf structure. This paper discusses the detailed analysis of those components for the fundamental deflecting/crabbing mode and higher order modes in the parallel-bar deflecting/crabbing cavity.