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rf improvements for Spallation Neutron Source H− ion source
Review of Scientific Instruments, 2010The Spallation Neutron Source at Oak Ridge National Laboratory is ramping up the accelerated proton beam power to 1.4 MW and just reached 1 MW. The rf-driven multicusp ion source that originates from the Lawrence Berkeley National Laboratory has been delivering ∼38 mA H− beam in the linac at 60 Hz, 0.9 ms.
Y W, Kang +9 more
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Neutron spallation sources in Europe
Nuclear Physics B - Proceedings Supplements, 1996After a brief general and historical discussion, the main design features of spallation sources are described. At the present time, Europe not only has the world-leading pulsed neutron spallation source, the SNS-ISIS at RAL, UK, but it is on the point of commissioning a world-leading continuous cyclotron-driven source, the SINQ at PSI, Switzerland ...
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Spallation neutron source takes shape
Neutron News, 2000Abstract Spring in Washington is a time for cherry blossoms, budgets, and neutrons! Over 200 participants attended the Second Users Meeting for the Spallation Neutron Source (SNS) from May 22–24, 2000 at the Renaissance Hotel in Washington, D.C. Neutron scatterers heard the latest news on the design and construction of SNS, as well as the anticipated ...
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The spallation-neutron-source project SINQ
Physica B+C, 1986SINQ is a continuous spallation-neutron source which is planned to be attached to the existing proton cyclotron at the Swiss Institute for Nuclear Research (SIN) after its upgrading to higher currents. The neutron-flux characteristics will be similar to those of a medium-flux reactor, but particular advantages are expected in the cold neutron region ...
F. Atchison +5 more
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Neutronic Design Studies for the Spallation Neutron Source
Nuclear Technology, 2000Neutronics analyses are now in progress to support initial selection of target system design features, materials, geometry, and component sizes for the proposed Spallation Neutron Source. Calculations have been performed to determine the neutron, proton, heavy-ion, and gamma-ray flux spectra as a function of time, energy, and space for the major ...
Lowell A. Charlton +3 more
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Spallation sources for neutron scattering
Physics Today, 1982Low-energy neutrons are particulary well suited to probe crystalline, glassy and biological materials. The de Broglie wavelength of a thermal neutron is of the same order as interatomic spacings, and its anomalously high cross section for scattering off hydrogen nuclei makes it an especially useful probe for hydrogenous substances. Furthermore, because
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Spallation neutron source saddle antenna H− ion source project
Review of Scientific Instruments, 2010In this project we are developing an H− source which will synthesize the most important developments in the field of negative ion sources to provide high current, high brightness, good lifetime, high reliability, and high power efficiency. We describe two planned modifications to the present spallation neutron source external antenna source in order to
Vadim, Dudnikov +4 more
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Neutrinos at the Spallation Neutron Source
AIP Conference Proceedings, 2007The Spallation Neutron Source at Oak Ridge will provide an intense source of neutrinos in the tens of MeV range, which nicely overlaps with the supernova neutrino energy range. I will describe the Neutrinos at the SNS (νSNS) program planned to exploit this high power, high quality source for studies of neutrino cross‐sections relevant for supernova ...
K. Scholberg +3 more
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Spallation neutron sources for neutron beam research
Contemporary Physics, 1978Abstract The major components of a spallation neutron source for neutron beam research are: an accelerator to produce intense bursts of energetic particles such as protons of 800 MeV; a target of a heavy material thick enough to absorb the majority of the energy of bombarding particles; an assembly of moderators and reflectors to slow the neutrons ...
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Long-Pulse Spallation Source Neutronic Performance
Journal of Neutron Research, 1997There are potential gains of about a factor of seven in the time-average neutron brightness for a coupled liquid H2 moderator compared to a decoupled one, and a factor of around five for a H20 moderator. However, these gains come at the expense of putting “tails” on the neutron pulses.
Gary J. Russell +3 more
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