George Swadling
(Lawrence Livermore National Lab)
James Steven Ross
(Lawrence Livermore National Laboratory)
Philip Datte
(Lawrence Livermore National Laboratory)
Justin Galbraith
(Lawrence Livermore National Laboratory)
Anastasia Manuel
(Lawrence Livermore National Laboratory)
Gene Freiders
(Lawrence Livermore National Laboratory)
Gene Vergel De Dios
(Lawrence Livermore National Laboratory)
John Moody
(Lawrence Livermore National Laboratory)
A time-resolved, vacuum-ultra-violet (VUV) spectrometer diagnostic has been implemented on the National Ignition Facility (NIF). This spectrometer is designed to make Optical Thomson Scattering (OTS) measurements of the key plasma parameters in under-dense Inertial Confinement Fusion Hohlraum plasmas. We present the results of the initial commissioning experiments which were carried out in 2016/2017. These experiments include 3ω (351nm) Thomson scattering measurements of the plasma parameters of plasma plumes launched via laser-heating a plastic disc, and background VUV emission measurements in ICF relevant hohlraum target configurations. We will discuss the results, as well as ongoing work to improve the diagnostic performance in preparation for commissioning of the forthcoming 5ω (211nm) OTS probe laser, which is scheduled for commissioning in late 2018.
George Swadling
(Lawrence Livermore National Lab)
James Steven Ross
(Lawrence Livermore National Laboratory)
Philip Datte
(Lawrence Livermore National Laboratory)
Justin Galbraith
(Lawrence Livermore National Laboratory)
Anastasia Manuel
(Lawrence Livermore National Laboratory)
Gene Freiders
(Lawrence Livermore National Laboratory)
Gene Vergel De Dios
(Lawrence Livermore National Laboratory)
John Moody
(Lawrence Livermore National Laboratory)
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