A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z    

Barlow, D.B.

Paper Title Page
MPPT055 The LANSCE Switchyard Kicker Project 3310
  • M.S. Gulley, 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.L. Casados, S. Chacon, S. Cohen, J.F. Cordova, J.A. Faucett, L.E. Fernandez, D.H. Fitzgerald, M. Fresquez, F.R. Gallegos, R.W. Garnett, J.D. Gilpatrick, F. Gonzales, F.W. Gorman, M.J. Hall, D.J. Hayden, D. Henderson, G.D. Johns, D.M. Kerstiens, M.D. Lusk, A.J. Maestas, H.P. Marquez, D. Martinez, M.P. Martinez, J.B. Merrill, R.E. Meyer, E.A. Morgan, A.C. Naranjo, J.F. O'Hara, F.R. Olivas, M.A. Oothoudt, T.D. Pence, E.M. Perez, C. Pillai, B.J. Roller, A.M. Romero, D.B. Romero, F.P. Romero, G. Sanchez, J.B. Sandoval, S. Schaller, F.E. Shelley, R.B. Shurter, J.R. Sims, J.L. Stockton, J. Sturrock, V.P. Vigil, J. Zaugg
    LANL, Los Alamos, New Mexico
  Until 2003, the existing configuration of the 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.  
RPPT068 Pion-Muon Concentrating System for Detectors of Highly Enriched Uranium 3757
  • S.S. Kurennoy, D.B. Barlow, B. Blind, A.J. Jason, N. Neri
    LANL, Los Alamos, New Mexico
  One of many possible applications of low-energy antiprotons collected in a Penning trap can be a portable muon source. Released antiprotons annihilate on impact with normal matter producing on average about 3 charged pions per antiproton, which in turn decay into muons. Existence of such negative-muon sources of sufficient intensity would bring into play, for example, detectors of highly enriched uranium based on muonic X-rays. We explore options of collecting and focusing pions and resulting muons to enhance the muon flux toward the detector. Simulations with MARS and MAFIA are used to choose the target material and parameters of the magnetic system consisting of a few solenoids.