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View article: Spatially resolved measurements of load current delivery on a 14 MA, 100 ns pulsed power experiment using a line-imaging velocity interferometer
Spatially resolved measurements of load current delivery on a 14 MA, 100 ns pulsed power experiment using a line-imaging velocity interferometer Open
Pulsed power generators create high-energy-density conditions by rapidly delivering an immense pulse of electrical current to a compact imploding load. Accurately measuring the shape and amplitude of this load current pulse is essential to…
View article: The Scattered Light Time-history Diagnostic suite at the National Ignition Facility
The Scattered Light Time-history Diagnostic suite at the National Ignition Facility Open
The Scattered Light Time-history Diagnostic (SLTD) is being implemented at the National Ignition Facility (NIF) to greatly expand the angular coverage of absolute scattered-light measurements for direct- and indirect-drive inertial confine…
View article: Characterization of photodetector temporal response for neutron time-of-flight (nToF) diagnostics at the National Ignition Facility
Characterization of photodetector temporal response for neutron time-of-flight (nToF) diagnostics at the National Ignition Facility Open
The temporal response of a microchannel plate photomultiplier tube used in the suite of neutron time of flight (nToF) diagnostics at the National Ignition Facility has been characterized to reduce uncertainty in, and understanding of, shot…
View article: Record fifth-harmonic-generation efficiency producing 211 nm, joule-level pulses using cesium lithium borate
Record fifth-harmonic-generation efficiency producing 211 nm, joule-level pulses using cesium lithium borate Open
The fifth harmonic of a pulsed Nd:YLF laser has been realized in a cascade of nonlinear crystals with a record efficiency of 30%. Cesium lithium borate is used in a Type-I configuration for sum-frequency mixing of 1053 and 266 nm, producin…
View article: Understanding fifth-harmonic generation in CLBO
Understanding fifth-harmonic generation in CLBO Open
Here, we report on results of fifth harmonic generation in Cesium Lithium Borate (CLBO) using a three-crystal cascaded frequency conversion scheme designed to study the energy balance of the final sum frequency generation stage. The experi…
View article: Radiation effects on active camera electronics in the target chamber at the National Ignition Facility
Radiation effects on active camera electronics in the target chamber at the National Ignition Facility Open
The National Ignition Facility's (NIF) harsh radiation environment can cause electronics to malfunction during high-yield DT shots. Until now there has been little experience fielding electronic-based cameras in the target chamber under th…
View article: Initial experimental demonstration of the principles of a xenon gas shield designed to protect optical components from soft x-ray induced opacity (blanking) in high energy density experiments
Initial experimental demonstration of the principles of a xenon gas shield designed to protect optical components from soft x-ray induced opacity (blanking) in high energy density experiments Open
The design principles of a xenon gas shield device that is intended to protect optical components from x-ray induced opacity (“x-ray blanking”) have been experimentally demonstrated at the OMEGA-60 Laser Facility at the Laboratory for Lase…
View article: Impulse responses of visible phototubes used in National Ignition Facility neutron time of flight diagnostics
Impulse responses of visible phototubes used in National Ignition Facility neutron time of flight diagnostics Open
Neutron-induced visible scintillation in neutron time of flight (NToF) diagnostics at the National Ignition Facility (NIF) is measured with 40 mm single stage micro-channel plate photomultipliers and a 40 mm vacuum photodiode, outside the …
View article: The design of the optical Thomson scattering diagnostic for the National Ignition Facility
The design of the optical Thomson scattering diagnostic for the National Ignition Facility Open
The National Ignition Facility (NIF) is a 192 laser beam facility designed to support the Stockpile Stewardship, High Energy Density and Inertial Confinement Fusion (ICF) programs. We report on the design of an Optical Thomson Scattering (…
View article: Improving the off-axis spatial resolution and dynamic range of the NIF X-ray streak cameras (invited)
Improving the off-axis spatial resolution and dynamic range of the NIF X-ray streak cameras (invited) Open
We report simulations and experiments that demonstrate an increase in spatial resolution of the NIF core diagnostic x-ray streak cameras by at least a factor of two, especially off axis. A design was achieved by using a corrector electron …
View article: Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility
Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility Open
An optical Thomson scattering diagnostic has been designed for the National Ignition Facility to characterize under-dense plasmas. We report on the design of the system and the expected performance for different target configurations. The …