W.C. Barkley

Publications (2)0 Total impact

• Conference Proceeding: The Lansce Switchyard Kicker Project

  H.W. Alvestad, W.C. Barkley, D.B. Barlow, D.S. Barr, G.A. Bennett, L.J. Bitteker, E. Bjorklund, M.J. Borden, M.J. Burns, G. Carr, [......], J.B. Sandoval, S. Schaller, F.E. Shelley, R.B. Shurter, J.R. Sims, J.L. Stockton, J. Sturrock, V.P. Vigil, T. Zaugg, M. Gulley
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  ABSTRACT: Until 2003, the existing configuration of the Los Alamos Neutron Scattering Center (LANSCE) switchyard did not allow simultaneous delivery of the H⁻beam to Lines D and X. In the late 1990’ s, with increased activities in Areas B and C, which serve the ultracold neutron experiments (UCN) and proton radiography (pRad), respectively, planning began to increase beam availability to all areas by installing a kicker system, dubbed the "Switchyard Kicker." The Switchyard Kicker is a system of two pulsed and two direct current magnets that enables simultaneous, uninterrupted beam delivery to Line D for the Lujan Center and the Weapons Neutron Research (WNR) Facility and, on request, a tailored H⁻beam pulse to Line X for the pRad and UCN research areas. The project received funding in July 2001 for design and implementation. During the 2003 Extended Maintenance Period this upgrade was installed in the Switchyard and commissioned during the Accelerator Turn-On period in the summer of 2003. With the commissioning successful, LANSCE now routinely operates in "Kick" mode, delivering simultaneous beam to Line X and Line D, increasing beam availability to all areas and simplifying production scheduling.
  Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the; 06/2005
• Conference Proceeding: Commissioning and initial operation of the Isotope Production Facility at the Los Alamos Neutron Science Center (LANSCE).

  K. F. Johnson, H. W. Alvestad, W. C. Barkley, D. B. Barlow, D. S. Barr, L. S. Bennett, L. J. Bitteker, E. A. Bjorklund, W. Boedeker, M. J. Borden, [......], Walter F. Sommer, M. W. Stettler, J. L. Stockton, J. C. Sturrock, T. L. Tomei, F. Valdez, V. P. Vigil, P. L. Walstrom, P. M. Wanco, J. Wilmarth
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  ABSTRACT: The recently completed 100-MeV H{sup +} Isotope Production Facility (IPF) at the LANSCE will provide radioisotopes for medical research and diagnosis, for basic research and for commercial use. A change to the LANSCE accelerator facility allowed for the installation of the IPF. Three components make up the LANSCE accelerator: an injector that accelerates the H{sup +} beam to 750-KeV, a drift-tube linac (DTL) that increases the beam energy to 100-MeV, and a side-coupled cavity linac (SCCL) that accelerates the beam to 800-MeV. The transition region, a space between the DTL and the SCCL, was modified to permit the insertion of a kicker magnet (23{sup o} kick angle) for the purpose of extracting a portion of the 100-MeV H{sup +} beam. A new beam line was installed to transport the extracted H{sup +} beam to the radioisotope production target chamber. This paper will describe the commissioning and initial operating experiences of IPF.
  12/2003