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Title: The single-line-of-sight, time-resolved x-ray imager diagnostic on OMEGA

Journal Article · · Review of Scientific Instruments
DOI: https://doi.org/10.1063/1.5036767 · OSTI ID:1477184
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  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  2. General Atomics, San Diego, CA (United States)
  3. TMC2 Innovations LLC, Murrieta, CA (United States)
  4. Kentech Instruments Ltd., Howbery Park, Wallingford, Oxfordshire (United Kingdom)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We present that the single-line-of-sight, time-resolved x-ray imager (SLOS-TRXI) on OMEGA is one of a new generation of fast-gated x-ray cameras comprising an electron pulse-dilation imager and a nanosecond-gated, burst-mode, hybrid complementary metal-oxide semiconductor sensor. SLOS-TRXI images the core of imploded cryogenic deuterium–tritium shells in inertial confinement fusion experiments in the ~4- to 9-keV photon energy range with a pinhole imager onto a photocathode. The diagnostic is mounted on a fixed port almost perpendicular to a 16 channel, framing-camera–based, time-resolved Kirkpatrick–Baez microscope, providing a second time-gated line of sight for hot-spot imaging on OMEGA. SLOS-TRXI achieves ~40-ps temporal resolution and better than 10 μm spatial resolution. Finally, shots with neutron yields of up to 1 × 1014 were taken without observed neutron-induced background signal. The implosion images from SLOS-TRXI show the evolution of the stagnating core.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001944; FC02-04ER54789; AC52-07NA27344
OSTI ID:
1477184
Alternate ID(s):
OSTI ID: 1476688; OSTI ID: 1513107
Report Number(s):
2017-268,1440; LLNL-JRNL-754192; 2017-268, 1440, 2398
Journal Information:
Review of Scientific Instruments, Vol. 89, Issue 10; Conference: 22nd Topical Conference on High Temperature Plasma Diagnostics, San Diego, CA, 16-19 April 2018; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (7)

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Sub-nanosecond single line-of-sight (SLOS) x-ray imagers (invited) journal October 2018
Exploration of the Transition from the Hydrodynamiclike to the Strongly Kinetic Regime in Shock-Driven Implosions journal May 2014
An overview of the Ultrafast X-ray Imager (UXI) program at Sandia Labs conference August 2015
Pulse-dilation enhanced gated optical imager with 5 ps resolution (invited) journal October 2010
A framed, 16-image Kirkpatrick–Baez x-ray microscope journal September 2017
Single Line of Sight CMOS radiation tolerant camera system design overview conference September 2016

Cited By (3)

Sub-nanosecond single line-of-sight (SLOS) x-ray imagers (invited) journal October 2018
Inferred UV fluence focal-spot profiles from soft x-ray pinhole-camera measurements on OMEGA journal February 2020
The National Direct-Drive Inertial Confinement Fusion Program journal December 2018

Figures / Tables (8)