Novel Capsule Fill Tube Assemblies for the Hydrodynamic Growth Radiography Targets

Journal Article · Fri Jan 19 00:00:00 EST 2018 · Fusion Science and Technology

DOI:https://doi.org/10.1080/15361055.2017.1391661· OSTI ID:1402462

Crippen, Jay W. ^[1]; Alfonso, E. L. ^[1]; Rice, Neal G. ^[1]; Kong, C. ^[1]; McInnis, M. ^[1]; Felker, S. ^[2]

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1. General Atomics, San Diego, CA (United States)
2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Capsule Fill Tube Assemblies (CFTAs) consist of an ablator capsule and fill tube via a laser drilled funnel hole. This hole then tapers from 17 μm diameter at the outer surface of the ablator capsule to less than 5 μm diameter on the inside of the capsule over approximately 200 μm of wall thickness. Demand for better understanding of the fill tube perturbation during the capsule implosion has driven advancements in the fill tube design. Engineering efforts have been made on Hydrodynamic Growth Radiography Assemblies (HGRs) using multiple tube design variations, including alternative angles, depths, sizes, and location with engineered defects to showcase fill tube effects during an implosion. Furthermore, testing has shown that these CFTAs and HGRs have survived all fabrication and transport to from General Atomics to Lawrence Livermore National Laboratory. These assemblies have also passed cryogenic testing at General Atomics. An overview of alternative CFTA designs, fabrication methods and developments will be presented.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: NA0001808; AC52-07NA27344
• OSTI ID: 1402462
• Journal Information: Fusion Science and Technology, Vol. 73, Issue 2; ISSN 1536-1055
• Publisher: American Nuclear Society
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY