Results 51 to 60 of about 154,916 (330)

120-keV NEUTRAL-BEAM INJECTION SYSTEM DEVELOPMENT [PDF]

, 1976
The neutral-beam injection systems for the next generation of U. S. fusion experiments (TFTR, MX, Doublet III) have requirements that considerably exceed the present state of development. TFTR, for example, desires 20 MW of 120-keV deuterium atoms in pulses of 0.5-sec duration.
Ehlers, K. W., Berkner, K. H., Cooper, W. S., Haughian, J. M., Kunkel, W. B., Prichard, B. A., (Jr.), Pyle, R. V., Stearns, J. W.   +7 more
openaire   +3 more sources

Two Dimensional Simulation of Beam Injection Into Neutral Plasma [PDF]

Journal of Astronomy and Space Sciences, 1990
Two dimensional electrostatic model was used to investigate the interactions between bean electron and neutral plasma. It was found that results heavily depend on the beam density.
Jong Ho Seon, Kyoung Wook Min
doaj  

First neutral beam experiments on Wendelstein 7-X

Nuclear Fusion, 2021
In the previous divertor campaign, the Wendelstein 7-X (W7-X) device injected 3.6 MW of neutral beam heating power allowing for the achievement of densities approaching 2 × 1020 m−3, and providing the first initial assessment of fast ion confinement in a
S. Lazerson, O. Ford, Simppa Äkaslompolö, S. Bozhenkov, C. Slaby, L. Vanó, A. Spanier, P. McNeely, N. Rust, D. Hartmann, P. Poloskei, Birger Buttenschoゆ, R. Burhenn, N. Tamura, R. Bussiahn, T. Wegner, M. Drevlak, Y. Turkin, K. Ogawa, J. Knauer, K. Brunner, E. Pasch, M. Beurskens, H. Damm, G. Fuchert, P. Nelde, E. Scott, N. Pablant, A. Langenberg, P. Traverso, P. Valson, U. Hergenhahn, A. Pavone, K. Rahbarnia, T. Andreeva, J. Schilling, C. Brandt, U. Neuner, H. Thomsen, N. Chaudhary, Udo Höefel, T. Stange, G. Weir, N. Marushchenko, M. Jakubowski, Adnan Ali, Yu Gao, H. Niemann, A. Puig Sitjes, R. Koenig, R. Schroeder, N. den Harder, B. Heinemann, C. Hopf, R. Riedl, R. Wolf, the W7-X team   +56 more
semanticscholar   +1 more source

Optical guiding in meter-scale plasma waveguides

, 2020
We demonstrate a new highly tunable technique for generating meter-scale low density plasma waveguides. Such guides can enable electron acceleration to tens of GeV in a single stage.
Feder, L., Goffin, A., Miao, B., Milchberg, H. M., Shrock, J. E.   +4 more
core   +1 more source

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

Advanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel, Andreas Schuster, Felix Schoenitz, Jean Lefèvre   +3 more
wiley   +1 more source

Fusion neutron production with deuterium neutral beam injection and enhancement of energetic-particle physics study in the large helical device

Nuclear Fusion, 2018
The deuterium operation of the large helical device (LHD) heliotron started in March 7, 2017, after long-term preparation and commissioning works necessary to execute the deuterium experiment. A comprehensive set of neutron diagnostics was implemented to
M. Isobe, K. Ogawa, T. Nishitani, N. Pu, H. Kawase, R. Seki, H. Nuga, E. Takada, S. Murakami, Y. Suzuki, M. Yokoyama, M. Osakabe   +11 more
semanticscholar   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Current Flow and Pair Creation at Low Altitude in Rotation Powered Pulsars' Force-Free Magnetospheres: Space-Charge Limited Flow [PDF]

, 2012
(shortened) We report the results of an investigation of particle acceleration and electron-positron plasma generation at low altitude in the polar magnetic flux tubes of Rotation Powered Pulsars, when the stellar surface is free to emit whatever charges
A. N. Timokhin, Abdo, Akhiezer, Aliu, Arons, Arons, Arons, Arons, Bai, Beloborodov, Beskin, Birdsall, Bogdanov, Bucciantini, Cheng, Contopoulos, Erber, Fawley, Fawley, Goldreich, Harding, Hibschman, Holloway, J. Arons, Kalapotharakos, Kramer, Levinson, Medin, Mestel, Mestel, Michel, Muslimov, Pacini, Rankin, Ruderman, Scharlemann, Shibata, Shibata, Spitkovsky, Spitkovsky, Sturrock, Tademaru, Tajima, Timokhin, Timokhin, Villasenor   +45 more
core   +3 more sources

Helium neutral beam injection into ASDEX Upgrade [PDF]

Fusion Engineering and Design, 2017
Abstract ASDEX Upgrade's (AUG) neutral beam injection (NBI) system is primarily designed for deuterium injection and delivers 20 MW heating power from two injectors with four beams each at 60 and 93 keV, respectively. As opposed to the cryo pumps of the JET NBI, the Ti getter pumps of the AUG NBI with a pumping speed of 3 × 10 6  l/s for hydrogen do ...
Hopf, C., Rittich, D., Schäffler, J., Thalhammer, J.   +3 more
openaire   +2 more sources

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source