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isotope-production

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MOZAC03 The LANSCE Accelerator: A Powerful Tool for Science and Applications proton, linac, scattering, storage-ring 120
 
  • K. Schoenberg
  The Los Alamos Neutron Science Center (LANSCE) accelerator was built over 30 years ago. It consists of a 800-MeV proton linac, a proton storage ring, and facilities for isotope production, proton radiography, ultra-cold neutrons, weapons neutron research and for various sciences such as materials, biological and nanotechnology using neutron scattering. For national security, it plays a vital role in stockpile stewardship by providing important data on dynamic events during weapons detonation using proton radiography. The aging components of LANSCE will be refurbished and modernized in the next few years and the LANSCE will continue serving as a prominent facility for both science and national security in the years ahead. After SNS comes on line, it will play a complementary role and will also serve as a staging facility for some experiments to be carried out at SNS. Interesting science being conducted at LANSCE and the plans for the refurbishment and future enhancement of the facility will be presented.  
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FRPMS052 H+ and H- Beam Position and Current Jitter at LANSCE linac, quadrupole, kicker, feedback 4105
 
  • J. D. Gilpatrick
  • B. Blind, M. S. Gulley, C. Pillai, J. F. Power
    LANL, Los Alamos, New Mexico
  Funding: *Work supported by the U. S. Department of Energy.

During the CY2005 and CY2006 Los Alamos Neutron Science Center (LANSCE) beam runs, six beam-development shifts were performed in order to acquire and analyze beam-current and beam-position jitter data for both the LANSCE H+ and H- beams. These data were acquired using three beam position monitors (BPMs) from the 100-MeV Isotope Production Facility (IPF) beam line and three BPMs from the Switchyard transport line at the end of the LANSCE 800-MeV linac. The two types of data acquired, intermacropulse and intramacropulse, were analyzed for statistical and frequency characteristics as well as various other correlations including comparing their phase-space characteristics in a coordinate system of transverse angle versus transverse position. This paper will briefly describe the measurements required to acquire these data, the analysis of these jitter data, and some interesting implications to beam operation.

 
 
FRPMS055 LANSCE Prototype Beam Position and Phase Monitor (BPPM) Mechanical Design alignment, vacuum, linac, pick-up 4123
 
  • J. F. O'Hara
  • M. J. Borden, D. C. Bruhn, J. L. Erickson, J. D. Gilpatrick, S. S. Kurennoy
    LANL, Los Alamos, New Mexico
  Funding: Work supported by United States Department of Energy

A prototype Beam Position and Phase Monitor (BPPM) beam line device is being designed to go in the LANSCE 805-MHz linac. The concept is to install two beam line devices in locations where their measurements can be compared with older existing Delta-T loop and wire scanner measurements. The plan is to install two devices so that transverse position, angular trajectory, as well as central beam phase and energy will be measured. The mechanical design will combine features from previous LANL designs that were done for the LANSCE Isotope Production Facility, LANSCE Switchyard project, and those done for the SNS linac. This paper will discuss the mechanical design and fabrication issues encountered during the course of developing the BPPM.