1 to 10 of 570 Results
Jun 30, 2025
Rosa, M.D.; Mackie, S.; Rigamonti, D.; Tedoldi, L.G.; Colombi, S.; Molin, A.D.; Marcer, G.; Nocente, M.; Gorini, G.; Raj, P.; Rebai, M.; Carmichael, J.; Reinke, M.; Scioscioli, F.; Tinguely, R.A.; Tardocchi, M., 2025, "Design solutions for the hodoscope of the magnetic proton recoil neutron spectrometer of the SPARC tokamak", https://doi.org/10.7910/DVN/TLDKLQ, Harvard Dataverse, V1
A new 14 MeV neutron spectrometer utilizing the magnetic proton recoil (MPR) technique is under development for the SPARC tokamak. This instrument measures neutrons by converting them into protons, whose momenta are subsequently analyzed using a series of magnets before detection by an array of scintillators known as the hodoscope. In this work, we... |
Jun 30, 2025
Ani Aprahamian, R. James deBoer, Joachim Görres, Maxwell Q. Sorensen, Michael Wiescher, Maria Gatu-Johnson, Chad J. Forrest, Arnold Schwemmlein, 2025, "Nucleosynthesis with Tritium", https://doi.org/10.7910/DVN/QIDIPP, Harvard Dataverse, V1
This paper reports on the possible role of tritium-induced reactions of light nuclei, which may influence nucleosynthesis in short-lived environments such as the third minute of the Big Bang. They may also play a role during the emergence of the neutrino-driven shock front in core collapse supernovae or merging neutron stars at extreme densities. T... |
Jun 25, 2025
Biswas, Bodhi; Baek, Seung Gyou; Bonoli, Paul; Shiraiwa, Syun'ichi; Wallace, Gregory; White, Anne, 2025, "Study of turbulence-induced refraction of lower hybrid waves using synthetic scrape-off layer filaments", https://doi.org/10.7910/DVN/K6B8P8, Harvard Dataverse, V5
Turbulence-induced refraction effects to lower hybrid (LH) wave propagation and current drive are studied using synthetic scrape-off layer (SOL) blob/filament fields. A synthetic 3D, field-following, blob turbulence model is implemented in the ray-tracing/Fokker-Planck (RTFP) codes GENRAY/CQL3D. In Alcator C-Mod, the blob field is shown to signific... |
Jun 25, 2025
Abhilash Mathews, Manaure Francisquez, Jerry Hughes, David Hatch, 2025, "Uncovering edge plasma dynamics via deep learning from partial observations", https://doi.org/10.7910/DVN/KGNIY9, Harvard Dataverse, V6
One of the most intensely studied aspects of magnetic confinement fusion is edge plasma behaviour, which is critical to reactor performance and operation. Drift-reduced Braginskii two-fluid theory has for decades been widely used to model edge plasmas with varying success. This Letter demonstrates that physics-informed neural networks can accuratel... |
Jun 25, 2025
P. Rodriguez-Fernandez , C. Angioni, A. E. White, 2025, "Local Transport Dynamics of Cold Pulses in Tokamak Plasmas", https://doi.org/10.7910/DVN/ZZP1XN, Harvard Dataverse, V5
For over two decades, our fundamental understanding of energy transport dynamics in the core of tokamak plasmas had been challenged by the striking observation of temperature perturbation reversals following the injection of cold pulses at the plasma edge. These phenomena were first discovered by Gentle et al. in 1995 and had long been suggested to... |
Jun 24, 2025
A. E. White, N. T. Howard, A. J. Creely, M. A. Chilenski, M. Greenwald, A. E. Hubbard, J. W. Hughes, E. Marmar, J. E. Rice, J. M. Sierchio, C. Sung, J. R. Walk, and D. G. Whyte, D. R. Mikkelsen, E. M. Edlund, C. Kung, C. Holland, J. Candy, C. C. Petty, M. L. Reinke, C. Theiler, 2025, "Nonlinear Gyrokinetic Simulations of the I-mode High Confnement Regime and Comparisons with Experiment", https://doi.org/10.7910/DVN/NWHDBB, Harvard Dataverse, V2
For the first time, nonlinear gyrokinetic simulations of I-mode plasmas are performed and compared with experiment. I-mode is a high confinement regime, featuring energy confinement similar to H-mode, but without enhanced particle and impurity particle confinement [D. G. Whyte et al., Nucl. Fusion 50, 105005 (2010)]. As a consequence of the separat... |
Christian Yoo, Rachel Bielajew, Garrard D. Conway, Pedro A. Molina Cabrera, Pablo Rodriguez-Fernandez, Branka Vanovac, Anne E. White, the EUROfusion MST1 Team, the ASDEX Upgrade Team, 2025, "Database study of turbulent electron temperature fluctuation measurements at ASDEX Upgrade", https://doi.org/10.7910/DVN/TATVKE, Harvard Dataverse, V15
In this work, an automated method for the analysis of data from the correlation electron cyclotron emission (CECE) diagnostic is applied to discharges in the ASDEX Upgrade (AUG) tokamak. This recently developed, automated method provides an efficient means of accurately analysing large quantities of experimental turbulence data, enabling the develo... |
Jun 23, 2025
Soe, Min; Vahala, George; Vahala, Linda; Ram, Abhay K.; Koukoutsis, Efstratios; Hizanidis, Kyriakos, 2025, "Qubit lattice approximation of some quantum and classical physics problems", https://doi.org/10.7910/DVN/71PCSV, Harvard Dataverse, V2
It is expected that quantum computers can provide exponential speedup over classical supercomputers for the solution of certain physics problems. We have been investigating the Qubit Lattice Approximation (QLA) for classical soliton collisions, for 2D and 3D quantum turbulence, and more recently for electromagnetic wave propagation in dielectric me... |
Jun 23, 2025
Zhou, Weiyue; Cairang, Wande; Amadeo, Paola; Woller, Kevin B.; Short, Michael P., 2025, "Influence of Proton Irradiation on Corrosion in Liquid Lead", https://doi.org/10.7910/DVN/3OGIPS, Harvard Dataverse, V24
The next-generation Gen IV nuclear reactors are designed to operate under increasingly challenging environments, aiming for higher thermal efficiency while adhering to strict physical and safety constraints. These harsh conditions, characterized by elevated temperatures and accelerated corrosion rates, coupled with the presence of high radiation da... |
Jun 23, 2025
Li, M.; Xu, H.; Wang, X.; Wang, M.; Ding, B.; Wu, C.; Yan, G.; Liu, L.; Zhao, L.; Wu, Z.; Xu, W.; Wu, D.; Zhang, L.; Tang, Y.; Li, H.; Wallace, G.; Baek, S.; Bonoli, P.; Zang, Q.; Lin, S.; Meng, L.; Zhao, H.; Xu, L.; Wang, M.; Zhang, X.; Huang, J.; Qian, J.; Gong, X., 2025, "Plasma heating by electron cyclotron wave and the temperature effects on lower hybrid current drive on EAST", https://doi.org/10.7910/DVN/NWFPA7, Harvard Dataverse, V1
This paper presents the progress in the long - pulse operation of the electron cyclotron (EC) system and the achievements in high - electron temperature plasmas by the combined EC and lower hybrid (LH) waves heating since the EC system was built in 2015. An electron temperature of up to 12 keV with a duration over 100 s was realized by the simultan... |
