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View article: JET machine operations in T&D-T
JET machine operations in T&D-T Open
JET, the world’s largest operating tokamak with unique Be/W wall and tritium handling capability, completed a Deuterium-Tritium (D-T) campaign in 2021 (Maggi et al 29th Fusion Energy Conf. ) following a decade of preparatory experiments, d…
View article: Report of the FESAC Facilities Construction Projects Subcommittee
Report of the FESAC Facilities Construction Projects Subcommittee Open
On December 1, 2023, the Director of the of the Office of Science (SC) charged all the Department of Energy Office of Science Federal Advisory Committees to respond to look toward the scientific horizon and identify what new or upgraded fa…
View article: Effects and mitigation of pulsed power radiation on optical fiber velocimetry
Effects and mitigation of pulsed power radiation on optical fiber velocimetry Open
Optical fiber diagnostics are extensively used in pulsed power experiments, such as the Sandia Z machine. However, radiation produced in a pulsed power environment can significantly affect these measurements. Catastrophic fiber darkening m…
View article: An X-ray Intensity Operations Monitor (AXIOM) (Final LDRD Project Report)
An X-ray Intensity Operations Monitor (AXIOM) (Final LDRD Project Report) Open
The Saturn accelerator has historically lacked the capability to measure time-resolved spectra for its 3-ring bremsstrahlung x-ray source. This project aimed to create a spectrometer called AXIOM to provide this capability. The project had…
View article: Sample test array and recovery (STAR) platform at the National Ignition Facility
Sample test array and recovery (STAR) platform at the National Ignition Facility Open
We have developed the Sample Test Array and Recovery (STAR) platform for the National Ignition Facility (NIF) for studying the thermal and hydrodynamic responses of materials in extreme environments. The STAR platform expands the range of …
View article: Review of pulsed power-driven high energy density physics research on Z at Sandia
Review of pulsed power-driven high energy density physics research on Z at Sandia Open
Pulsed power accelerators compress electrical energy in space and time to provide versatile experimental platforms for high energy density and inertial confinement fusion science. The 80-TW “Z” pulsed power facility at Sandia National Labo…
View article: Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall
Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall Open
For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des . 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/5…
View article: Understanding the UK’s productivity problems
Understanding the UK’s productivity problems Open
Purpose The purpose of this paper is to examine the nature, causes and consequences of the UK’s productivity problems and whether these may be addressed through the new technologies of artificial intelligence (AI). Design/methodology/appro…
View article: Plasma and radiation detection via fiber interferometry
Plasma and radiation detection via fiber interferometry Open
Photonic Doppler velocimetry tracks motion during high-speed, single-event experiments using telecommunication fiber components. The same technology can be applied in situations where there is no actual motion, but rather a change in the o…
View article: The differential absorption hard x-ray spectrometer at the Z facility
The differential absorption hard x-ray spectrometer at the Z facility Open
The Differential Absorption Hard X-ray (DAHX) spectrometer is a diagnostic developed to measure time-resolved radiation between 60 keV and 2 MeV at the Z Facility. It consists of an array of 7 Si PIN diodes in a tungsten housing that provi…
View article: Overview of the JET results in support to ITER
Overview of the JET results in support to ITER Open
The 2014-2016 JET results are reviewed in the light of their significance for optimising the ITER research plan for the active and non-active operation. More than 60 h of plasma operation with ITER first wall materials successfully took pl…
View article: Coarse spectral characterization of warm x-rays at the Z facility using a filtered thermoluminescent dosimeter array
Coarse spectral characterization of warm x-rays at the Z facility using a filtered thermoluminescent dosimeter array Open
A new collimated filtered thermoluminescent dosimeter (TLD) array has been developed at the Z facility to characterize warm x-rays (hν > 10 keV) produced by Z pinch radiation sources. This array includes a Kapton debris shield assembly …
View article: New Capabilities for Hostile Environments on Z Grand Challenge LDRD - Final Status
New Capabilities for Hostile Environments on Z Grand Challenge LDRD - Final Status Open
The purpose of this project was to develop new physical simulation capabilities in order to support the science-based qualification of nonnuclear weapon components in hostile radiation environments. The project contributes directly to the …
View article: A non-LTE analysis of high energy density Kr plasmas on Z and NIF
A non-LTE analysis of high energy density Kr plasmas on Z and NIF Open
Multi-keV X-ray radiation sources have a wide range of applications, from biomedical studies and research on thermonuclear fusion to materials science and astrophysics. The refurbished Z pulsed power machine at the Sandia National Laborato…
View article: The differential absorption hard x-ray (DAHX) spectrometer at the Z facility
The differential absorption hard x-ray (DAHX) spectrometer at the Z facility Open
The Differential Absorption Hard X-ray (DAHX) spectrometer has been developed to diagnose photon energies above 80 keV and provides a time-resolved measurement of the x-ray spectrum from the plasma driven by Z. The DAHX spectrometer is a r…