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Title: The National Ignition Facility modular Kirkpatrick-Baez microscope

Abstract

Current two-dimensional X-ray imaging at the National Ignition Facility (NIF) uses time resolved pinhole cameras with ~10-25µm pinholes. This method has limitations in the smallest resolvable features that can be imaged with reasonable photon statistics for inertial confinement fusion (ICF) applications. ICF sources have a broadband self-emission spectrum that causes the pinhole images obtained, through thin foil filters, to contain a similarly broadband spectrum complicating the interpretation of structure in the source. In order to study phenomena on the scale of ~5 µm, such as dopant mix in the ICF capsule, a narrow energy band, higher spatial resolution microscope system with improved signal/noise has been developed using X-ray optics. Utilizing grazing incidence mirrors in a Kirkpatrick-Baez microscope (KBM) configuration, an X-ray microscope has been designed and fielded on NIF with four imaging channels. The KBM has ~12x magnification, <8 µm resolution and higher throughput in comparison to similar pinhole systems. The first KBM mirrors are coated with a multilayer mirror to allow a ‘narrow band’ energy response at 10.2keV with ΔE~3keV. By adjusting the mirror coating only, the energy response can be matched to future experimental requirements. Here, several mirror packs have been commissioned and are interchangeable in the diagnosticmore » snout.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1367974
Report Number(s):
LLNL-CONF-694175
Journal ID: ISSN 0034-6748; RSINAK
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: Proceedings of the 21st Topical Conference on High-Temperature Plasma Diagnostics, 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:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Pickworth, L. A., Ayers, J., Bell, P., Brejnholt, N. F., Buscho, J. G., Bradley, D., Decker, T., Hau-Riege, S., Kilkenny, J., McCarville, T., Pardini, T., Vogel, J., and Walton, C. The National Ignition Facility modular Kirkpatrick-Baez microscope. United States: N. p., 2016. Web. doi:10.1063/1.4960417.
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Pickworth, L. A., Ayers, J., Bell, P., Brejnholt, N. F., Buscho, J. G., Bradley, D., Decker, T., Hau-Riege, S., Kilkenny, J., McCarville, T., Pardini, T., Vogel, J., & Walton, C. The National Ignition Facility modular Kirkpatrick-Baez microscope. United States. https://doi.org/10.1063/1.4960417
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Pickworth, L. A., Ayers, J., Bell, P., Brejnholt, N. F., Buscho, J. G., Bradley, D., Decker, T., Hau-Riege, S., Kilkenny, J., McCarville, T., Pardini, T., Vogel, J., and Walton, C. Wed . "The National Ignition Facility modular Kirkpatrick-Baez microscope". United States. https://doi.org/10.1063/1.4960417. https://www.osti.gov/servlets/purl/1367974.
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@article{osti_1367974,
title = {The National Ignition Facility modular Kirkpatrick-Baez microscope},
author = {Pickworth, L. A. and Ayers, J. and Bell, P. and Brejnholt, N. F. and Buscho, J. G. and Bradley, D. and Decker, T. and Hau-Riege, S. and Kilkenny, J. and McCarville, T. and Pardini, T. and Vogel, J. and Walton, C.},
abstractNote = {Current two-dimensional X-ray imaging at the National Ignition Facility (NIF) uses time resolved pinhole cameras with ~10-25µm pinholes. This method has limitations in the smallest resolvable features that can be imaged with reasonable photon statistics for inertial confinement fusion (ICF) applications. ICF sources have a broadband self-emission spectrum that causes the pinhole images obtained, through thin foil filters, to contain a similarly broadband spectrum complicating the interpretation of structure in the source. In order to study phenomena on the scale of ~5 µm, such as dopant mix in the ICF capsule, a narrow energy band, higher spatial resolution microscope system with improved signal/noise has been developed using X-ray optics. Utilizing grazing incidence mirrors in a Kirkpatrick-Baez microscope (KBM) configuration, an X-ray microscope has been designed and fielded on NIF with four imaging channels. The KBM has ~12x magnification, <8 µm resolution and higher throughput in comparison to similar pinhole systems. The first KBM mirrors are coated with a multilayer mirror to allow a ‘narrow band’ energy response at 10.2keV with ΔE~3keV. By adjusting the mirror coating only, the energy response can be matched to future experimental requirements. Here, several mirror packs have been commissioned and are interchangeable in the diagnostic snout.},
doi = {10.1063/1.4960417},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {Wed Aug 10 00:00:00 EDT 2016},
month = {Wed Aug 10 00:00:00 EDT 2016}
}
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https://doi.org/10.1063/1.4960417
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Works referenced in this record:

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    Works referencing / citing this record:

    Note: Tandem Kirkpatrick–Baez microscope with sixteen channels for high-resolution laser-plasma diagnostics
    journal, March 2018

    • Yi, Shengzhen; Zhang, Zhe; Huang, Qiushi
    • Review of Scientific Instruments, Vol. 89, Issue 3
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    An x-ray optic calibration facility for high energy density diagnostics
    journal, October 2018

    • Kozioziemski, B. J.; Ayers, J.; Bell, P.
    • Review of Scientific Instruments, Vol. 89, Issue 10
    • DOI: 10.1063/1.5038742

    Design and raytrace simulations of a multilayer-coated Wolter x-ray optic for the Z machine at Sandia National Laboratories
    journal, October 2018

    • Vogel, J. K.; Pivovaroff, M. J.; Kozioziemski, B.
    • Review of Scientific Instruments, Vol. 89, Issue 10
    • DOI: 10.1063/1.5038811

    Development of new platforms for hydrodynamic instability and asymmetry measurements in deceleration phase of indirectly driven implosions on NIF
    journal, August 2018

    • Pickworth, L. A.; Hammel, B. A.; Smalyuk, V. A.
    • Physics of Plasmas, Vol. 25, Issue 8
    • DOI: 10.1063/1.5039744

    Note: New method for high-space-resolving hotspot electron temperature measurements on Shenguang-III prototype
    journal, September 2018

    • Ren, Kuan; Cao, Zhurong; Dong, Jianjun
    • Review of Scientific Instruments, Vol. 89, Issue 9
    • DOI: 10.1063/1.5049422

    Development of an adjustable Kirkpatrick-Baez microscope for laser driven x-ray sources
    journal, June 2019

    • Zeraouli, G.; Gatti, G.; Longman, A.
    • Review of Scientific Instruments, Vol. 90, Issue 6
    • DOI: 10.1063/1.5091103

    Characterization of high spatial resolution lithium fluoride X-ray detectors
    journal, June 2019

    • Mabey, P.; Albertazzi, B.; Michel, Th.
    • Review of Scientific Instruments, Vol. 90, Issue 6
    • DOI: 10.1063/1.5092265

    Pushered single shell implosions for mix and radiation trapping studies using high-Z layers on National Ignition Facility
    journal, July 2019

    • Dewald, E. L.; Pino, J. E.; Tipton, R. E.
    • Physics of Plasmas, Vol. 26, Issue 7
    • DOI: 10.1063/1.5109426

    X-ray penumbral imaging diagnostic developments at the National Ignition Facility
    conference, September 2017

    • Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim
    • Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI
    • DOI: 10.1117/12.2274611

    Advanced high resolution x-ray diagnostic for HEDP experiments
    journal, November 2018

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