Search Results - "Iverson, E.B."

Conceptual Design of the Moderator Test Station at the Spallation Neutron Source by Iverson, E.B., Johns, K.C., Gallmeier, F.X., Grammer, K.B.

“…We describe the Moderator Test Station (MTS), under construction at the Spallation Neutron Source. We will leverage the Beam Test Facility (BTF) at the…”
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The spin-echo spectrometer at the Spallation Neutron Source (SNS) by Ohl, M., Monkenbusch, M., Arend, N., Kozielewski, T., Vehres, G., Tiemann, C., Butzek, M., Soltner, H., Giesen, U., Achten, R., Stelzer, H., Lindenau, B., Budwig, A., Kleines, H., Drochner, M., Kaemmerling, P., Wagener, M., Möller, R., Iverson, E.B., Sharp, M., Richter, D.

“…A novel neutron spin-echo spectrometer with superconducting main coils enabling enclosure by a double walled μ-metal magnetic shielding chamber has been built…”
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Measurements of the change of neutronic performance of a hydrogen moderator at Manuel Lujan Neutron Scattering Center due to conversion from ortho- to para-hydrogen state by Ooi, M., Ino, T., Muhrer, G., Pitcher, E.J., Russell, G.J., Ferguson, P.D., Iverson, E.B., Freeman, D., Kiyanagi, Y.

“…The ortho/para-hydrogen ratio is a key parameter for the neutronic performance of a liquid hydrogen moderator. In order to get a better understanding of the…”
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In-situ measurement of radiation driven back-conversion from para to ortho liquid hydrogen state in cold moderators at J-PARC by Teshigawara, M., Lee, Y., Tatsumoto, H., Hartl, M., Aso, T., Iverson, E.B., Ariyoshi, G., Ikeda, Y., Hasegawa, T.

“…At Japanese Spallation Neutron Source in J-PARC, the para-hydrogen fraction was measured by using Raman spectroscopy in-situ for an integrated beam power of…”
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Real-time monitoring of the orthohydrogen fraction in a liquid hydrogen moderator by Iverson, E.B., DeGraff, B.D., Denison, J.J., Riemer, B.W., Gallmeier, F.X.

“…We present the first direct measurements of the orthohydrogen fraction in an operating liquid hydrogen moderator loop at a high powered neutron source. We have…”
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Fundamental neutron physics beamline at the spallation neutron source at ORNL by Fomin, N., Greene, G.L., Allen, R.R., Cianciolo, V., Crawford, C., Tito, T.M., Huffman, P.R., Iverson, E.B., Mahurin, R., Snow, W.M.

“…We describe the Fundamental Neutron Physics Beamline (FnPB) facility located at the Spallation Neutron Source at Oak Ridge National Laboratory. The FnPB was…”
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Corrigendum to “Fundamental neutron physics beamline at the spallation neutron source at ORNL” [Nucl. Instrum. Methods Phys. Res. A 773 (2015) 45–51] by Fomin, N., Greene, G.L., Allen, R.R., Cianciolo, V., Crawford, C., Ito, T.M., Huffman, P.R., Iverson, E.B., Mahurin, R., Snow, W.M.

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Introducing single-crystal scattering and optical potentials into MCNPX: Predicting neutron emission from a convoluted moderator by Gallmeier, F.X., Iverson, E.B., Lu, W., Baxter, D.V., Muhrer, G., Ansell, S.

“…Neutron transport simulation codes are indispensable tools for the design and construction of modern neutron scattering facilities and instrumentation…”
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Demonstration of a single-crystal reflector-filter for enhancing slow neutron beams by Muhrer, G., Schönfeldt, T., Iverson, E.B., Mocko, M., Baxter, D.V., Hügle, Th, Gallmeier, F.X., Klinkby, E.B.

“…The cold polycrystalline beryllium reflector-filter concept has been used to enhance the cold neutron emission of cryogenic hydrogen moderators, while…”
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Enhancing neutron beam production with a convoluted moderator by Iverson, E.B., Baxter, D.V., Muhrer, G., Ansell, S., Dalgliesh, R., Gallmeier, F.X., Kaiser, H., Lu, W.

“…We describe a new concept for a neutron moderating assembly resulting in the more efficient production of slow neutron beams. The Convoluted Moderator, a…”
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RETRACTED: Neutron moderator development research at the low energy neutron source by Baxter, David V., Leung, J., Kaiser, Helmut, Ansell, S., Muhrer, G., Iverson, E.B., Ferguson, P.D.

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New search for mirror neutron regeneration by Broussard, L.J., Bailey, K.M., Bailey, W.B., Barrow, J.L., Berry, K., Blose, A., Crawford, C., Debeer-Schmitt, L., Frost, M., Galindo-Uribarri, A., Gallmeier, F.X., Gilbert, C.E., Heilbronn, L., Iverson, E.B., Johnston, A., Kamyshkov, Y., Lewiz, P., Novikov, I., Penttilä, S.I., Vavra, S., Young, A.R.

“…The possibility of relatively fast neutron oscillations into a mirror neutron state is not excluded experimentally when a mirror magnetic field is considered…”
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Moderator poison design and burn-up calculations at the SNS by Lu, W., Ferguson, P.D., Iverson, E.B., Gallmeier, F.X., Popova, I.

“…The spallation neutron source (SNS) at Oak Ridge National Laboratory was commissioned in April 2006. At the nominal operating power (1.4 MW), it will have…”
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Measured Spectral Brightness of the HFIR Supercritical Hydrogen Cold Source by Robertson, J.L., Iverson, E.B.

“…The High Flux Isotope Reactor (HFIR) resumed operation in June of 2007 with the ability to produce world-class cold neutron beams for research after the…”
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The Monte Carlo simulation of neutron transmitted and scattered by disk choppers of various compositions by Baek, I., Iverson, E.B., Carpenter, J.M.

“…We consider the transmission of neutrons through disk-type neutron choppers, considering both the uncollided neutron fraction ( φ u) and scattered neutron…”
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The 10,000,000,000-Volt question: What is the best choice of proton energy to drive a pulsed spallation neutron source? by Carpenter, J.M., Gabriel, T.A., Iverson, E.B., Jerng, D.W.

“…In pulsed spallation neutron sources, higher proton beam current or higher proton energy brings higher proton beam power, and from greater beam power come more…”
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Electronic time-focusing of pulsed-source neutron chopper data: binning to minimize effects of proton pulse and chopper opening time variations by Carpenter, J.M., Littrell, K.C., Abernathy, D.L., Iverson, E.B.

“…In pulsed-source chopper spectrometer systems, the energy-defining chopper inevitably drifts in phase with respect to the time at which neutrons emerge from…”
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Cold neutron beams at the Intense Pulsed Neutron Source by Iverson, E.B, Carpenter, J.M, Hill, E.J

“…The three moderators at the Intense Pulsed Neutron Source (IPNS) are of cryogenic methane (CH 4); one of liquid methane at 100 K, and two of solid methane at…”
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