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

Abstract At the completion of the National Ignition Campaign (NIC), the National Ignition Facility (NIF) had about 36 different types of diagnostics. These were based on several decades of development on Nova and OMEGA and involved the whole U.S. inertial confinement fusion community. In 1994, the Joint Central Diagnostic Team documented a plan for a limited set of NIF diagnostics in the NIF Conceptual Design Report. Two decades later, these diagnostics, and many others, were installed workhorse tools for all users of NIF. We give a short description of each of the 36 different types of NIC diagnostics grouped by the function of the diagnostics, namely, target drive, target response and target assembly, stagnation, and burn. A comparison of NIF diagnostics with the Nova diagnostics shows that the NIF diagnostic capability is broadly equivalent to that of Nova in 1999. Although NIF diagnostics have a much greater degree of automation and rigor than Nova’s, new diagnostics are limited such as the higher-speed X-ray imager. Recommendations for future diagnostics on the NIF are discussed.

[1]  P Datte,et al.  Backscatter measurements for NIF ignition targets (invited). , 2010, The Review of scientific instruments.

[2]  J. D. Kilkenny,et al.  Recent diagnostic developments at Nova (invited) , 1992 .

[3]  J. M. Mack,et al.  Diagnosing inertial confinement fusion gamma ray physics (invited). , 2010, The Review of scientific instruments.

[4]  P. Bell,et al.  High‐speed gated x‐ray imagers (invited) , 1988 .

[5]  S. Wender,et al.  Relative light yield and temporal response of a stilbene-doped bibenzyl organic scintillator for neutron detection , 2014 .

[6]  Judith A. Liebman,et al.  Experiment archive, analysis, and visualization at the National Ignition Facility , 2012 .

[7]  J. D. Kilkenny,et al.  Target diagnostic system for the national ignition facility (invited) , 1997 .

[8]  T. C. Sangster,et al.  Prototypes of National Ignition Facility neutron time-of-flight detectors tested on OMEGA , 2004 .

[9]  E Gullikson,et al.  Soft x-ray images of the laser entrance hole of ignition hohlraums. , 2012, The Review of scientific instruments.

[10]  M. Gatu Johnson,et al.  Copper activation deuterium-tritium neutron yield measurements at the National Ignition Facility. , 2012, The Review of scientific instruments.

[11]  R Tommasini,et al.  Imaging of high-energy x-ray emission from cryogenic thermonuclear fuel implosions on the NIF. , 2012, The Review of scientific instruments.

[12]  J. Koch,et al.  Applied plasma spectroscopy: Laser-fusion experiments , 2009 .

[13]  L A Bernstein,et al.  Multi-shot analysis of the gamma reaction history diagnostic. , 2012, The Review of scientific instruments.

[14]  T. C. Sangster,et al.  National Ignition Facility neutron time-of-flight measurements (invited). , 2010, The Review of scientific instruments.

[15]  P Bell,et al.  Measuring symmetry of implosions in cryogenic Hohlraums at the NIF using gated x-ray detectors (invited). , 2010, The Review of scientific instruments.

[16]  Neal R. Pederson,et al.  Gated x-ray detector for the National Ignition Facility , 2006 .

[17]  Gilbert W. Collins,et al.  A novel particle time of flight diagnostic for measurements of shock- and compression-bang times in D3He and DT implosions at the NIF. , 2012, The Review of scientific instruments.

[18]  Gilbert W. Collins,et al.  Charged-particle spectroscopy for diagnosing shock ρR and strength in NIF implosions. , 2012, The Review of scientific instruments.

[19]  David K. Bradley,et al.  Line-imaging velocimeter for shock diagnostics at the OMEGA laser facility , 2004 .

[20]  T. C. Sangster,et al.  Testing a new NIF neutron time-of-flight detector with a bibenzyl scintillator on OMEGA. , 2012, The Review of scientific instruments.

[21]  Nobuhiko Izumi,et al.  X-ray imaging in an environment with high-neutron background on National Ignition Facility , 2011, Optical Engineering + Applications.

[22]  P M Grant,et al.  Note: Radiochemical measurement of fuel and ablator areal densities in cryogenic implosions at the National Ignition Facility. , 2015, The Review of scientific instruments.

[23]  P L Volegov,et al.  The neutron imaging diagnostic at NIF (invited). , 2012, The Review of scientific instruments.

[24]  S Telford,et al.  Standard design for National Ignition Facility x-ray streak and framing cameras. , 2010, The Review of scientific instruments.

[25]  O. Landen,et al.  Capsule Ablator Inflight Performance Measurements Via Streaked Radiography Of ICF Implosions On The NIF* , 2016 .

[26]  Progress toward the development and testing of source reconstruction methods for NIF neutron imaging. , 2010, The Review of scientific instruments.

[27]  D. Jedlovec,et al.  The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the national ignition facility , 2011, 2011 Abstracts IEEE International Conference on Plasma Science.

[28]  J. Oertel,et al.  Neutron time-of-flight and emission time diagnostics for the National Ignition Facility , 2000 .

[29]  J. D. Kilkenny,et al.  Diagnostic systems for the National Ignition Facility (NIF) (invited) , 1995 .

[30]  P Bell,et al.  Hot electron measurements in ignition relevant Hohlraums on the National Ignition Facility. , 2010, The Review of scientific instruments.

[31]  M J Moran,et al.  Neutron spectrometry--an essential tool for diagnosing implosions at the National Ignition Facility (invited). , 2012, The Review of scientific instruments.

[32]  Robert L. Kauffman,et al.  Dante soft x-ray power diagnostic for National Ignition Facility , 2004 .

[33]  J P Holder,et al.  Crosstalk in x-ray framing cameras: Effect on voltage, gain, and timing (invited). , 2012, The Review of scientific instruments.

[34]  E. Campbell.  Recent results from the Nova program at LLNL , 1991 .

[35]  C. Sorce,et al.  Development of Compton radiography of inertial confinement fusion implosionsa) , 2011 .

[36]  C Cerjan,et al.  Radiation hardening of gated x-ray imagers for the National Ignition Facility (invited). , 2010, The Review of scientific instruments.

[37]  Gilbert W. Collins,et al.  In-flight observations of low-mode ρR asymmetries in NIF implosionsa) , 2015 .

[38]  J. M. Mack,et al.  Measurement of areal density in the ablators of inertial-confinement-fusion capsules via detection of ablator (n, n′γ) gamma-ray emission , 2013 .

[39]  M J Moran,et al.  The National Ignition Facility neutron time-of-flight system and its initial performance (invited). , 2010, The Review of scientific instruments.

[40]  Lynn G. Seppala,et al.  Overview of the line-imaging VISAR diagnostic at the National Ignition Facility (NIF) , 2006, International Optical Design Conference.

[41]  Otto L. Landen,et al.  Omega Dante soft x-ray power diagnostic component calibration at the National Synchrotron Light Source , 2004 .

[42]  Ramon Joe Leeper,et al.  Probing high areal-density cryogenic deuterium-tritium implosions using downscattered neutron spectra measured by the magnetic recoil spectrometera) , 2010 .

[43]  P M Grant,et al.  Radiochemical determination of Inertial Confinement Fusion capsule compression at the National Ignition Facility. , 2014, The Review of scientific instruments.

[44]  M. J. Pivovaroff,et al.  Images of the laser entrance hole from the static x-ray imager at NIF. , 2010, The Review of scientific instruments.

[45]  K A Nugent,et al.  Neutron Imaging of Laser Fusion Targets , 1988, Science.

[46]  R Tommasini,et al.  Experimental study of neutron induced background noise on gated x-ray framing cameras. , 2010, The Review of scientific instruments.

[47]  C Stoeckl,et al.  Time-resolved measurements of the hot-electron population in ignition-scale experiments on the National Ignition Facility (invited). , 2014, The Review of scientific instruments.

[48]  B Sammuli,et al.  Dilation x-ray imager a new∕faster gated x-ray imager for the NIF. , 2012, The Review of scientific instruments.

[49]  S Ayers,et al.  A magnetic particle time-of-flight (MagPTOF) diagnostic for measurements of shock- and compression-bang time at the NIF (invited). , 2014, The Review of scientific instruments.

[50]  J. D. Moody,et al.  Backscatter Measurements for NIF Ignition Targets , 2010 .

[51]  M Wiedeking,et al.  Characterizing time decay of bibenzyl scintillator using time correlated single photon counting. , 2012, The Review of scientific instruments.

[52]  C. J. Cerjan,et al.  Gamma Reaction History ablator areal density constraints upon correlated diagnostic modeling of National Ignition Facility implosion experiments , 2015 .

[53]  J. Frenje,et al.  The coincidence counting technique for orders of magnitude background reduction in data obtained with the magnetic recoil spectrometer at OMEGA and the NIF. , 2011, The Review of scientific instruments.

[54]  P Bell,et al.  X-ray streak camera cathode development and timing accuracy of the 4ω ultraviolet fiducial system at the National Ignition Facility. , 2012, The Review of scientific instruments.

[55]  L A Bernstein,et al.  Neutron activation diagnostics at the National Ignition Facility (invited). , 2012, The Review of scientific instruments.

[56]  T. C. Sangster,et al.  Measuring the absolute deuterium-tritium neutron yield using the magnetic recoil spectrometer at OMEGA and the NIF. , 2012, The Review of scientific instruments.

[57]  C Stoeckl,et al.  South pole bang-time diagnostic on the National Ignition Facility (invited). , 2012, The Review of scientific instruments.

[58]  L A Bernstein,et al.  Enhanced NIF neutron activation diagnostics. , 2012, The Review of scientific instruments.

[59]  R. Turner.  Achromatically filtered diamond photoconductive detectors for high power soft x-ray flux measurements , 1998 .

[60]  F. J. Marshall,et al.  Neutron imaging of ICF target plasmas (invited) , 2003 .

[61]  Y. P. Opachich,et al.  Measuring x-ray burn history with the Streaked Polar Instrumentation for Diagnosing Energetic Radiation (SPIDER) at the National Ignition Facility (NIF) , 2012, Other Conferences.