skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High-resolution measurements of the DT neutron spectrum using new CD foils in the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility

Abstract

The Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility measures the DT neutron spectrum from cryogenically layered inertial confinement fusion implosions. Yield, areal density, apparent ion temperature, and directional fluid flow are inferred from the MRS data. Here, this paper describes recent advances in MRS measurements of the primary peak using new, thinner, reduced-area deuterated plastic (CD) conversion foils. The new foils allow operation of MRS at yields 2 orders of magnitude higher than previously possible, at a resolution down to ~200 keV FWHM.

Authors:
 [1]; ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [3];  [2]; ORCiD logo [2];  [2];  [3];  [3];  [1]; ORCiD logo [1]; ORCiD logo [3];  [2];  [3];  [1];  [2]; ORCiD logo [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center, High Energy Density Physics Div.; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1312738
Alternate Identifier(s):
OSTI ID: 1466960
Report Number(s):
LLNL-JRNL-745982
Journal ID: ISSN 0034-6748; RSINAK
Grant/Contract Number:  
AC52-07NA27344; NA0001857; NA0001808
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: 21. Topical Conference on High Temperature Plasma Diagnostics (HTPD 2016), Madison, WI (United States), 5-9 Jun 2016; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Neutrons; Magnetoresistance; Lasers

Citation Formats

Gatu Johnson, M., Frenje, J. A., Bionta, R. M., Casey, D. T., Eckart, M. J., Farrell, M. P., Grim, G. P., Hartouni, E. P., Hatarik, R., Hoppe, M., Kilkenny, J. D., Li, C. K., Petrasso, R. D., Reynolds, H. G., Sayre, D. B., Schoff, M. E., Séguin, F. H., Skulina, K., and Yeamans, C. B. High-resolution measurements of the DT neutron spectrum using new CD foils in the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility. United States: N. p., 2016. Web. doi:10.1063/1.4959946.
Gatu Johnson, M., Frenje, J. A., Bionta, R. M., Casey, D. T., Eckart, M. J., Farrell, M. P., Grim, G. P., Hartouni, E. P., Hatarik, R., Hoppe, M., Kilkenny, J. D., Li, C. K., Petrasso, R. D., Reynolds, H. G., Sayre, D. B., Schoff, M. E., Séguin, F. H., Skulina, K., & Yeamans, C. B. High-resolution measurements of the DT neutron spectrum using new CD foils in the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility. United States. doi:10.1063/1.4959946.
Gatu Johnson, M., Frenje, J. A., Bionta, R. M., Casey, D. T., Eckart, M. J., Farrell, M. P., Grim, G. P., Hartouni, E. P., Hatarik, R., Hoppe, M., Kilkenny, J. D., Li, C. K., Petrasso, R. D., Reynolds, H. G., Sayre, D. B., Schoff, M. E., Séguin, F. H., Skulina, K., and Yeamans, C. B. Tue . "High-resolution measurements of the DT neutron spectrum using new CD foils in the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility". United States. doi:10.1063/1.4959946. https://www.osti.gov/servlets/purl/1312738.
@article{osti_1312738,
title = {High-resolution measurements of the DT neutron spectrum using new CD foils in the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility},
author = {Gatu Johnson, M. and Frenje, J. A. and Bionta, R. M. and Casey, D. T. and Eckart, M. J. and Farrell, M. P. and Grim, G. P. and Hartouni, E. P. and Hatarik, R. and Hoppe, M. and Kilkenny, J. D. and Li, C. K. and Petrasso, R. D. and Reynolds, H. G. and Sayre, D. B. and Schoff, M. E. and Séguin, F. H. and Skulina, K. and Yeamans, C. B.},
abstractNote = {The Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility measures the DT neutron spectrum from cryogenically layered inertial confinement fusion implosions. Yield, areal density, apparent ion temperature, and directional fluid flow are inferred from the MRS data. Here, this paper describes recent advances in MRS measurements of the primary peak using new, thinner, reduced-area deuterated plastic (CD) conversion foils. The new foils allow operation of MRS at yields 2 orders of magnitude higher than previously possible, at a resolution down to ~200 keV FWHM.},
doi = {10.1063/1.4959946},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:

Works referenced in this record:

The 27.3 meter neutron time-of-flight system for the National Ignition Facility
conference, September 2013

  • Grim, G. P.; Morgan, G. L.; Aragonez, R.
  • SPIE Optical Engineering + Applications, SPIE Proceedings
  • DOI: 10.1117/12.2030170

Measuring the absolute deuterium–tritium neutron yield using the magnetic recoil spectrometer at OMEGA and the NIF
journal, October 2012

  • Casey, D. T.; Frenje, J. A.; Gatu Johnson, M.
  • Review of Scientific Instruments, Vol. 83, Issue 10
  • DOI: 10.1063/1.4738657

First measurements of the absolute neutron spectrum using the magnetic recoil spectrometer at OMEGA (invited)
journal, October 2008

  • Frenje, J. A.; Casey, D. T.; Li, C. K.
  • Review of Scientific Instruments, Vol. 79, Issue 10
  • DOI: 10.1063/1.2956837

Neutron activation diagnostics at the National Ignition Facility (invited)
journal, October 2012

  • Bleuel, D. L.; Yeamans, C. B.; Bernstein, L. A.
  • Review of Scientific Instruments, Vol. 83, Issue 10
  • DOI: 10.1063/1.4733741

Fuel gain exceeding unity in an inertially confined fusion implosion
journal, February 2014

  • Hurricane, O. A.; Callahan, D. A.; Casey, D. T.
  • Nature, Vol. 506, Issue 7488
  • DOI: 10.1038/nature13008

Neutron spectrometry—An essential tool for diagnosing implosions at the National Ignition Facility (invited)
journal, October 2012

  • Johnson, M. Gatu; Frenje, J. A.; Casey, D. T.
  • Review of Scientific Instruments, Vol. 83, Issue 10
  • DOI: 10.1063/1.4728095

Measurements of collective fuel velocities in deuterium-tritium exploding pusher and cryogenically layered deuterium-tritium implosions on the NIF
journal, April 2013

  • Gatu Johnson, M.; Casey, D. T.; Frenje, J. A.
  • Physics of Plasmas, Vol. 20, Issue 4
  • DOI: 10.1063/1.4802810

Diagnosing implosion performance at the National Ignition Facility (NIF) by means of neutron spectrometry
journal, March 2013


A new model to account for track overlap in CR-39 data
journal, July 2012

  • Zylstra, A. B.; Frenje, J. A.; Séguin, F. H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 681
  • DOI: 10.1016/j.nima.2012.04.021

Improvements in Fabrication of Elastic Scattering Foils Used to Measure Neutron Yield by the Magnetic Recoil Spectrometer
journal, September 2016

  • Reynolds, H. G.; Schoff, M. E.; Farrell, M. P.
  • Fusion Science and Technology, Vol. 70, Issue 2
  • DOI: 10.13182/FST15-235

Analysis of the neutron time-of-flight spectra from inertial confinement fusion experiments
journal, November 2015

  • Hatarik, R.; Sayre, D. B.; Caggiano, J. A.
  • Journal of Applied Physics, Vol. 118, Issue 18
  • DOI: 10.1063/1.4935455

A neutron spectrometer for precise measurements of DT neutrons from 10 to 18 MeV at OMEGA and the National Ignition Facility
journal, January 2001

  • Frenje, J. A.; Green, K. M.; Hicks, D. G.
  • Review of Scientific Instruments, Vol. 72, Issue 1
  • DOI: 10.1063/1.1323243

The high-foot implosion campaign on the National Ignition Facility
journal, May 2014

  • Hurricane, O. A.; Callahan, D. A.; Casey, D. T.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4874330

Three-dimensional simulations of National Ignition Facility implosions: Insight into experimental observablesa)
journal, May 2015

  • Spears, Brian K.; Munro, David H.; Sepke, Scott
  • Physics of Plasmas, Vol. 22, Issue 5
  • DOI: 10.1063/1.4920957

The National Ignition Facility Diagnostic Set at the Completion of the National Ignition Campaign, September 2012
journal, February 2016

  • Kilkenny, J. D.; Bell, P. M.; Bradley, D. K.
  • Fusion Science and Technology, Vol. 69, Issue 1
  • DOI: 10.13182/FST15-173

The coincidence counting technique for orders of magnitude background reduction in data obtained with the magnetic recoil spectrometer at OMEGA and the NIF
journal, July 2011

  • Casey, D. T.; Frenje, J. A.; Séguin, F. H.
  • Review of Scientific Instruments, Vol. 82, Issue 7
  • DOI: 10.1063/1.3605483

The magnetic recoil spectrometer for measurements of the absolute neutron spectrum at OMEGA and the NIF
journal, April 2013

  • Casey, D. T.; Frenje, J. A.; Gatu Johnson, M.
  • Review of Scientific Instruments, Vol. 84, Issue 4
  • DOI: 10.1063/1.4796042

Fabrication of Thin CH and CD Films and Patterned Films Using a Heat Press Technique for the NIF and OMEGA Magnetic Recoil Neutron Spectrometer
journal, April 2013

  • Paguio, R. R.; Jasion, D. J.; Saito, K. M.
  • Fusion Science and Technology, Vol. 63, Issue 2
  • DOI: 10.13182/FST63-2-268