Author: Saini, A.
Paper Title Page
TUPB054 Coherent Effects of High Current Beam in Project-X Linac 597
  • A.I. Sukhanov, I.V. Gonin, T.N. Khabiboulline, A. Lunin, A. Saini, N. Solyak, A. Vostrikov, V.P. Yakovlev
    Fermilab, Batavia, USA
  Resonance excitation of longitudinal high order modes in superconducting RF structures of Project X CW linac is studied. We analyze regimes of operation of the linac with high beam current, which can be used to provide an intense muon source for the future Neutrino Factory or Muon Collider, and also important for the Accelerator-Driven Subcritical (ADS) systems. We calculate power loss and associated heat load to the cryogenic system. Longitudinal emittance growth is estimated. We consider an alternative design of the elliptical cavity for the high energy part of linac, which is more suitable for high current operation.  
THPB014 Lattice Design and Beam Dynamics Studies for Project X 876
  • N. Solyak, J.-P. Carneiro, V.A. Lebedev, J.-F. Ostiguy, A. Saini
    Fermilab, Batavia, USA
  Fermilab is developing Project-X, a high intensity superconducting H machine for high energy physics experiments. The first stage is 1 mA average, 3 GeV linac operating in CW mode. Its front-end comprises a LEBT section with magnetic focusing and pre-chopping, a 162.5 MHz RFQ and ~10 m long MEBT section which includes a high bandwidth, bunch-by-bunch capable chopper. The latter extracts, out of a nominal 5 mA peak 162.5 MHz train, and arbitrary bunch structure able to meet the requirements of different experiments. Acceleration from 2.1 MeV to 3 GeV is accomplished through five families of SRF cavities operating at three frequencies: Half-wave resonators (162.5 MHz), spoke cavities (two families at 325 MHz) and elliptical cavities (two families at 650 MHz). In this contribution, we present the status of the CW linac lattice design and results from recent beam physics studies.  
THPB055 Numerical Simulations of ProjectX/PXIE RFQ 975
  • J.-F. Ostiguy, A. Saini, N. Solyak
    Fermilab, Batavia, USA
  Funding: Fermi Research Alliance, LLC under DOE Contract No. De-AC02-07CH11359
Project-X is a proposed superconducting linac-based high intensity proton source at Fermilab. The machine first stages operate in CW mode from 2.1 to 3 GeV and a high bandwidth chopper is used to produce the required bunch patterns. A 162.5 MHz CW RFQ accelerates the beam from 30 keV to 2.1 MeV. A concern with CW operation is that losses either within the RFQ or in the dowstream modules should be well-understood and remain very low to ensure safe and/or reliable operation. In this contribution, we investigate the suitability of existing RFQ codes and model the PXIE RFQ (ProjectX test facility) designed constructed by LBNL to make useful predictions of loss patterns and phase space distribution.