Results 11 to 20 of about 251,000 (291)

A Femtosecond Neutron Source [PDF]

Applied Physics B, 2005
The possibility to use the ultrashort ion bunches produced by circularly polarized laser pulses to drive a source of fusion neutrons with sub-optical cycle duration is discussed.
A Macchi, A. Macchi, B Shen, D Hilscher, F Ewald, F Krausz, G Grillon, G Mourou, G Pretzler, JM Yang, K Pachucki, KW Ledingham, KW Madison, L Disdier, LF Mauro Di, LJ Perkins, N Izumi, N Milosevic, PA Norreys, PH Bucksbaum, S Atzeni, S Chelkowski, S Fritzler, S Ter-Avetisyan, T Ditmire, T Tajima, VS Belyaev   +26 more
core   +2 more sources

Imaging low-energy positron beams in real-time with unprecedented resolution

Scientific Reports, 2023
Particle beams focused to micrometer-sized spots play a crucial role in forefront research using low-energy positrons. Their expedient and wide application, however, requires highly-resolved, fast beam diagnostics. We have developed two different methods
Michael Berghold, Vassily Vadimovitch Burwitz, Lucian Mathes, Christoph Hugenschmidt, Francesco Guatieri   +4 more
doaj   +1 more source

A Fast-neutron Source for Radiotherapy [PDF]

Nature, 1963
IN a recent note, Lomer and Greene1 have recommended the development of a 14-MeV fast-neutron source for radiotherapy. We feel that there are disadvantages to this approach. The relative biological effectiveness of fast neutrons is related to their linear energy transfer, which in turn varies inversely with the energy of the neutron2,3.
R J, BERRY, R, OLIVER, E H, PORTER
  +8 more sources

Octahedral oxide glass network in ambient pressure neodymium titanate

Scientific Reports, 2022
Rare-earth titanates form very fragile liquids that can be made into glasses with useful optical properties. We investigate the atomic structure of 83TiO2-17Nd2O3 glass using pair distribution function (PDF) analysis of X-ray and neutron diffraction with
Stephen K. Wilke, Oliver L. G. Alderman, Chris J. Benmore, Jörg Neuefeind, Richard Weber   +4 more
doaj   +1 more source

Real electronic signal data from particle accelerator power systems for machine learning anomaly detection

Data in Brief, 2022
This article describes real time series datasets collected from the high voltage converter modulators (HVCM) of the Spallation Neutron Source facility. HVCMs are used to power the linear accelerator klystrons, which in turn produce the high-power radio ...
Majdi I. Radaideh, Chris Pappas, Sarah Cousineau   +2 more
doaj   +1 more source

Conceptual Design of the Moderator Test Station at the Spallation Neutron Source [PDF]

EPJ Web of Conferences
We describe the Moderator Test Station (MTS), under construction at the Spallation Neutron Source. We will leverage the Beam Test Facility (BTF) at the Spallation Neutron Source to provide a moderator neutronics test stand with which we will verify the ...
Iverson E.B., Johns K.C., Gallmeier F.X., Grammer K.B.   +3 more
doaj   +1 more source

Implementing bubbly mercury material model (R-P model) in the pulse simulation to predict strain on the Spallation Neutron Source target vessel with gas injection

Results in Physics, 2023
The Spallation Neutron Source (SNS) creates neutrons by striking a liquid mercury target with short pulses of high-energy protons. SNS targets have been operated with helium microbubble gas injection into portions of the flowing mercury since 2017.
Hao Jiang, Drew E. Winder, Charlotte Barbier, Bernard W. Riemer   +3 more
doaj   +1 more source

A portable neutron spectroscope (NSPECT) for detection, imaging and identification of nuclear material [PDF]

, 2010
We have developed, fabricated and tested a prototype imaging neutron spectrometer designed for real-time neutron source location and identification. Real-time detection and identification is important for locating materials. These materials, specifically
Bancroft, Chris, Bloser, Peter F., Bravar, U, Fourguette, Dominique, Frost, Colin, Larocque, Liane, Legere, Jason S., McConnell, Mark L, Pavlich, Jane, Ritter, Greg, Ryan, James M., Wassick, Greg, Wood, Joshua, Woolf, R S   +13 more
core   +2 more sources

Operational data for fault prognosis in particle accelerators with machine learning

Data in Brief, 2023
This paper presents real operational data collected from the power systems of the Spallation Neutron Source facility, which provides the most intense neutron beam in the world.
Majdi I. Radaideh, Chris Pappas, Mark Wezensky, Sarah Cousineau   +3 more
doaj   +1 more source

Opportunities for Nuclear Astrophysics at FRANZ [PDF]

, 2009
The "Frankfurter Neutronenquelle am Stern-Gerlach-Zentrum" (FRANZ), which is currently under development, will be the strongest neutron source in the astrophysically interesting energy region in the world.
A. Schempp, F. Käppeler, Jaag, K. Volk, Knie, Käppeler, L. P. Chau, M. Heil, O. Meusel, R. Plag, R. Reifarth, Ratynski, Reifarth, U. Ratzinger, Uberseder, Walter   +15 more
core   +1 more source