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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Developing a platform to enable higher input parameters in Magnetized Liner Inertial Fusion.
Abstract not provided.
The Present and Future of QCD: QCD Town Meeting White Paper – An Input to the 2023 NSAC Long Range Plan
It is currently understood that there are four fundamental forces in nature: gravitational, electromagnetic, weak and strong forces. The strong force governs the interactions between quarks and gluons, elementary particles whose interactions give rise to the vast majority of visible mass in the universe. The mathematical description of the strong force is provided by the non-Abelian gauge theory Quantum Chromodynamics (QCD). While QCD is an exquisite theory, constructing the nucleons and nuclei from quarks, and furthermore explaining the behavior of quarks and gluons at all energies, remain to be complex and challenging problems. Such challenges, along with the desire to understand all visible matter at the most fundamental level, position the study of QCD as a central thrust of research in nuclear science. Experimental insight into the strong force can be gained using large particle accelerator facilities, which are necessary to probe the very short distance scales over which quarks and gluons interact. The Long Range Plans (LRPs) exercise of 1989 and 1996 led directly to the construction of two world-class facilities: the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) that is focused on studying how the structure of hadrons emerges from QCD (cold QCD research), and the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Lab (BNL) that aims at the discovery and study of a new state of matter, the quark-gluon plasma (QGP), at extremely high temperatures (hot QCD research). These past investments have produced major advances. Nucleons and nuclei are being studied with increasing precision with a unified description of the partonic structure utilizing multi-dimensional imaging. Significant progress has been made, paving the way towards a complete picture of how quarks and gluons give rise to the mass, spin, and momentum of the nucleon. In hot QCD, the QGP is created in the collisions of nuclei at RHIC and the Large Hadron Collider (LHC) and is observed to behave like a fluid with very low specific shear viscosity; the current goals are to understand how the fluid behavior emerges from QCD and to characterize the temperature (and chemical potential) dependence of the properties of the QGP. As this White Paper is written, current experimental programs at CEBAF, RHIC and the LHC continue to provide exciting near term opportunities to capitalize on the investments in experimental equipment and accelerator operations. Most importantly, the QCD community looks forward to the construction of the Electron Ion Collider (EIC) as a major new facility to push forward QCD research in the next decades, with significant focus on exploring the properties of gluons, the mediators of the strong force.
Light ions and future experiments: Panelist Inputs
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Low RF loss conductive ceramic for high power input coupler windows for SRF cavities
High power RF couplers connect transmission lines to cavities, providing power used to accelerate particle beam • Coupler also provides vacuum barrier for beam vacuum via RF windows • RF windows experience breakdown at much lower voltages than comparable insulators in DC fields • For large voltages, electron emission from “triple junction” and multipacting lead to window failure due to arching and/or thermal runaway.
Optimal Quantum Transfer from Input Flying Qubit to Lossy Memory.
Abstract not provided.
Input Signal for Synthetic Inertia: Estimated ROCOF Versus Remote Machine Acceleration.
Abstract not provided.
MELCOR Best Practices and Revised Input Structures for HTGR and FHR.
Abstract not provided.
Algorithmic Input Generation for More Effective Software Testing.
Abstract not provided.
Modeling Efficiency of Inverters with Multiple Inputs: Test Procedure for Measuring Efficiency.
Abstract not provided.
Status of the Verified, Archived, Library of Inputs and Data (VALID) [Slides]
This presentation begins with a brief project overview and a note on sponsors. This presentation includes a reminder of cases added in FY2021 and FY2022 along with cases currently in progress. The presentation concludes with some future plans for VALID.
STCH quarterly report_LLNL input
In this quarter, to understand the co-limitation imposed by surface reaction kinetics at moderate-to-low water splitting temperatures, we compute the reaction energy and barrier for water splitting surface reaction on SrMn 0.5 Ti 0.5 O 3-δ (SMT55). First, using the low-energy (100), (110), and (111) surfaces, we attempted to identify several symmetrically distinct sites for oxygen vacancy based on statistical methods.
Extrapolating Dynamic Transfer Functions from Multiple-Input Multiple-Output Vibration Testing and Simulation (EDTF) [Slides]
Abstract not provided.
Node support input to HydroGEN STCH project quarterly report
n this quarter, we further refined our water splitting (WS) reaction calculations on the surface of SrTi 0.5 Mn 0.5 O 3 . Among various surface configurations for WS imposed by surface orientations, terminations, and neighboring chemical species, we hypothesized that (1) the WS reaction energy should be exothermic and (2) the surface oxygen vacancy formation energy should be in a reasonable range compared to the bulk oxygen vacancy formation energy to be accessible during the reduction and WS reaction conditions.
Sandia Mechanics Challenge: Determining Mechanical Performance and Model Calibration Inputs for the Challenge Material and Fasteners
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