Stability Measurements for Alignment of the NIF Neutron Imaging System Pinhole Array Metadata

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Title

  • Main Title Stability Measurements for Alignment of the NIF Neutron Imaging System Pinhole Array

Creator

  • Author: Fittinghoff, D N
    Creator Type: Personal
  • Author: Bower, D E
    Creator Type: Personal
  • Author: Drury, O B
    Creator Type: Personal
  • Author: Dzenitis, J M
    Creator Type: Personal
  • Author: Frank, M
    Creator Type: Personal
  • Author: Buckles, R A
    Creator Type: Personal
  • Author: Munson, C
    Creator Type: Personal
  • Author: Wilde, C H
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2011-03-29

Language

  • English

Description

  • Content Description: The alignment system for the National Ignition Facility's neutron imaging system has been commissioned and measurements of the relative stability of the 90-315 DIM, the front and the back of the neutron imaging pinhole array and an exploding pusher target have been made using the 90-135 and the 90-258 opposite port alignment systems. Additionally, a laser beam shot from the neutron-imaging Annex and reflected from a mirror at the back of the pinhole array was used to monitor the pointing of the pinhole. Over a twelve hour period, the relative stability of these parts was found to be within {approx} {+-}18 {micro}m rms even when using manual methods for tracking the position of the objects. For highly visible features, use of basic particle tracking techniques found that the front of the pinhole array was stable relative to the 90-135 opposite port alignment camera to within {+-}3.4 {micro}m rms. Reregistration, however, of the opposite port alignment systems themselves using the target alignment sensor was found to change the expected position of target chamber center by up to 194 {micro}m.
  • Physical Description: PDF-file: 32 pages; size: 5.7 Mbytes

Subject

  • STI Subject Categories: 46 Instrumentation Related To Nuclear Science And Technology
  • Keyword: Cameras
  • Keyword: Mirrors
  • Keyword: Target Chambers
  • Keyword: Targets
  • Keyword: Neutrons
  • STI Subject Categories: 22 General Studies Of Nuclear Reactors
  • Keyword: Stability
  • Keyword: Ignition
  • STI Subject Categories: 71 Classical And Quantumm Mechanics, General Physics
  • Keyword: Lasers
  • STI Subject Categories: 73 Nuclear Physics And Radiation Physics
  • Keyword: Monitors
  • Keyword: Alignment
  • Keyword: Sensors

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: LLNL-TR-477431
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/1022147
  • Office of Scientific & Technical Information Report Number: 1022147
  • Archival Resource Key: ark:/67531/metadc837898
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