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Title: Development of Electroplated Au Capsule Fill Tube Assemblies (CFTA) for the Double Shell ICF Concept on NIF

Abstract

Current capsules used at the National Ignition Facility (NIF) utilize a single shell design comprised of a single ablator material. Although single shell designs are currently the standard design, they suffer from several physics disadvantages, such as sensitivity to asymmetries and instabilities. The double shell is a proposed design utilizing a high-Z inner metal shell with a low-Z outer shell that is intended to mitigate the issues associated with typical single shell designs. Electroplating is one method that can be utilized to fabricate high-Z metal shells. Au is one particular material that can be electroplated with high density and uniformity. Capsule fill tube assemblies (CFTAs) built from these Au shells have passed all cryogenic leak tests. The shells have a low native surface roughness and are free of voids. Lastly, Au shells have been successfully fabricated, characterized, and built into CFTAs.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
General Atomics, San Diego, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1462721
Grant/Contract Number:  
NA0001808
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 73; Journal Issue: 3; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Kong, C., Giraldez, E. M., Crippen, J. W., Huang, H., Hoppe, M. L., Vu, M., Boehm, K. J., Rice, N. G., Elsner, F. H., Fitzsimmons, P., and Farrell, M. P. Development of Electroplated Au Capsule Fill Tube Assemblies (CFTA) for the Double Shell ICF Concept on NIF. United States: N. p., 2018. Web. doi:10.1080/15361055.2017.1397486.
Kong, C., Giraldez, E. M., Crippen, J. W., Huang, H., Hoppe, M. L., Vu, M., Boehm, K. J., Rice, N. G., Elsner, F. H., Fitzsimmons, P., & Farrell, M. P. Development of Electroplated Au Capsule Fill Tube Assemblies (CFTA) for the Double Shell ICF Concept on NIF. United States. https://doi.org/10.1080/15361055.2017.1397486
Kong, C., Giraldez, E. M., Crippen, J. W., Huang, H., Hoppe, M. L., Vu, M., Boehm, K. J., Rice, N. G., Elsner, F. H., Fitzsimmons, P., and Farrell, M. P. 2018. "Development of Electroplated Au Capsule Fill Tube Assemblies (CFTA) for the Double Shell ICF Concept on NIF". United States. https://doi.org/10.1080/15361055.2017.1397486. https://www.osti.gov/servlets/purl/1462721.
@article{osti_1462721,
title = {Development of Electroplated Au Capsule Fill Tube Assemblies (CFTA) for the Double Shell ICF Concept on NIF},
author = {Kong, C. and Giraldez, E. M. and Crippen, J. W. and Huang, H. and Hoppe, M. L. and Vu, M. and Boehm, K. J. and Rice, N. G. and Elsner, F. H. and Fitzsimmons, P. and Farrell, M. P.},
abstractNote = {Current capsules used at the National Ignition Facility (NIF) utilize a single shell design comprised of a single ablator material. Although single shell designs are currently the standard design, they suffer from several physics disadvantages, such as sensitivity to asymmetries and instabilities. The double shell is a proposed design utilizing a high-Z inner metal shell with a low-Z outer shell that is intended to mitigate the issues associated with typical single shell designs. Electroplating is one method that can be utilized to fabricate high-Z metal shells. Au is one particular material that can be electroplated with high density and uniformity. Capsule fill tube assemblies (CFTAs) built from these Au shells have passed all cryogenic leak tests. The shells have a low native surface roughness and are free of voids. Lastly, Au shells have been successfully fabricated, characterized, and built into CFTAs.},
doi = {10.1080/15361055.2017.1397486},
url = {https://www.osti.gov/biblio/1462721}, journal = {Fusion Science and Technology},
issn = {1536-1055},
number = 3,
volume = 73,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2018},
month = {Mon Jan 15 00:00:00 EST 2018}
}

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

Figures / Tables:

Figure 1) Figure 1): A proposed double shell design.

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Works referenced in this record:

Double‐shell inertial confinement fusion target fabrication
journal, April 1981


Understanding the Critical Parameters of the PAMS Mandrel Fabrication Process
journal, September 2016


Complete Surface Mapping of ICF Shells
journal, March 2004


3D Surface Reconstruction of ICF Shells after Full Surface Spheremapping
journal, May 2006


Development of a coating technique for inertial confinement fusion plastic targets
journal, May 1986


Capsule Shimming Developments for National Ignition Facility (NIF) Hohlraum Asymmetry Experiments
journal, December 2017


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.