Search Results - "Iverson, E. B"

Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly by Broussard, L J, Barrow, J L, DeBeer-Schmitt, L, Dennis, T, Fitzsimmons, M R, Frost, M J, Gilbert, C E, Gonzalez, F M, Heilbronn, L, Iverson, E B, Johnston, A, Kamyshkov, Y, Kline, M, Lewiz, P, Matteson, C, Ternullo, J, Varriano, L, Vavra, S

“…An unexplained >4σ discrepancy persists between "beam" and "bottle" measurements of the neutron lifetime. A new model proposed that conversions of neutrons n…”
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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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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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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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Status of the NPDGamma experiment by Fry, J., Alarcon, R., Allen, R., Askanazi, E., Balascuta, S., Barron-Palos, L., Baeßler, S., Barzilov, A., Blessinger, C., Blyth, D., Bowman, J. D., Calarco, J. R., Chupp, T. E., Coppola, C. E., Crawford, C., Craycraft, K., Dabaghyan, M., Evans, D., Favela, J., Fieseler, C., Fomin, N., Fox, W., Freedman, S., Frlež, E., Fu, C., Garcia, C., Garishvili, I., Gericke, M. T., Gillis, R. C., Grammer, K., Greene, G. L., Hamblen, J., Hayes, C., Hersman, F. W., Ino, T., Iverson, E. B., Jones, G. L., Kabir, L., Kucucker, S., Lauss, B., Li, Y., Mahurin, R., Maldonado-Velazquez, M., McCrea, M., Masuda, Y., Mei, J., Milburn, R., Mitchell, G. S., Mueller, P., Muto, S., Musgrave, M., Nann, H., Novikov, I., Page, S., Parsons, D., Počanić, D., Penttilä, S. I., Ramsay, W. D., Salas-Bacci, A., Santra, S., Seo, P.-N., Sharapov, E., Sharma, M., Simmons, F., Smith, T., Snow, W. M., Stuart, J., Tang, E., Tang, Z., Thomison, J., Tong, T., Vanderwerp, J., Waldecker, S., Wilburn, W. S., Xu, W., Yuan, V., Zhang, Y.

“…The NPDGamma experiment measures the parity-violating (PV) gamma asymmetry from polarized cold neutrons captured on protons at the Spallation Neutron Source…”
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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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The Spallation Neutron Source (SNS) project: a fertile ground for radiation protection and shielding challenges by Gallmeier, F. X., Ferguson, P. D., Popova, I. I., Iverson, E. B.

“…The Spallation Neutron Source facility presently under construction in the USA consists of a front end, a linac, an accumulator ring, a target station and a…”
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Target station shielding issues at the spallation neutron source by Ferguson, P. D., Gallmeier, F. X., Iverson, E. B., Popova, I. I.

“…Recent spallation neutron source shielding activities in support of the neutron beam shutters and the hot cell walls are presented. Existing neutron beam…”
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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.

“…Here, we present the first direct measurements of the orthohydrogen fraction in an operating liquid hydrogen moderator loop at a high-powered neutron source…”
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Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly by Broussard, L. J, Barrow, J. L, DeBeer-Schmitt, L, Dennis, T, Fitzsimmons, M. R, Frost, M. J, Gilbert, C. E, Gonzalez, F. M, Heilbronn, L, Iverson, E. B, Johnston, A, Kamyshkov, Y, Kline, M, Lewiz, P, Matteson, C, Ternullo, J, Varriano, L, Vavra, S

“…An unexplained $>4\,\sigma$ discrepancy persists between "beam" and "bottle" measurements of the neutron lifetime. A new model proposed that conversions of…”
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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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Measurement of the Parity-Odd Angular Distribution of Gamma Rays From Polarized Neutron Capture on $^{35}$Cl by Fomin, N, Alarcon, R, Alonzi, L, Askanazi, E, Baeßler, S, Balascuta, S, Barrón-Palos, L, Barzilov, A, Blyth, D, Bowman, J. D, Birge, N, Calarco, J. R, Chupp, T. E, Cianciolo, V, Coppola, C. E, Crawford, C. B, Craycraft, K, Evans, D, Fieseler, C, Frlež, E, Fry, J, Garishvili, I, Gericke, M. T. W, Gillis, R. C, Grammer, K. B, Greene, G. L, Hall, J, Hamblen, J, Hayes, C, Iverson, E. B, Kabir, M. L, Kucuker, S, Lauss, B, Mahurin, R, McCrea, M, Maldonado-Velázquez, M, Masuda, Y, Mei, J, Milburn, R, Mueller, P. E, Musgrave, M, Nann, H, Novikov, I, Parsons, D, Penttilä, S. I, Počanić, D, Ramirez-Morales, A, Root, M, Salas-Bacci, A, Santra, S, Schröder, S, Scott, E, Seo, P. -N, Sharapov, E. I, Simmons, F, Snow, W. M, Sprow, A, Stewart, J, Tang, E, Tang, Z, Tong, X, Turkoglu, D. J, Whitehead, R, Wilburn, W. S

“…We report a measurement of two energy-weighted gamma cascade angular distributions from polarized slow neutron capture on the ^{35}$Cl nucleus, one parity-odd…”
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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

“…EPJ Web of Conferences 219, 07002 (2019) The possibility of relatively fast neutron oscillations into a mirror neutron state is not excluded experimentally…”
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First Observation of P-odd γ Asymmetry in Polarized Neutron Capture on Hydrogen by Blyth, D, Fry, J, Fomin, N, Alarcon, R, Alonzi, L, Askanazi, E, Baeßler, S, Balascuta, S, Barrón-Palos, L, Barzilov, A, Bowman, J D, Birge, N, Calarco, J R, Chupp, T E, Cianciolo, V, Coppola, C E, Crawford, C B, Craycraft, K, Evans, D, Fieseler, C, Frlež, E, Garishvili, I, Gericke, M T W, Gillis, R C, Grammer, K B, Greene, G L, Hall, J, Hamblen, J, Hayes, C, Iverson, E B, Kabir, M L, Kucuker, S, Lauss, B, Mahurin, R, McCrea, M, Maldonado-Velázquez, M, Masuda, Y, Mei, J, Milburn, R, Mueller, P E, Musgrave, M, Nann, H, Novikov, I, Parsons, D, Penttilä, S I, Počanić, D, Ramirez-Morales, A, Root, M, Salas-Bacci, A, Santra, S, Schröder, S, Scott, E, Seo, P-N, Sharapov, E I, Simmons, F, Snow, W M, Sprow, A, Stewart, J, Tang, E, Tang, Z, Tong, X, Turkoglu, D J, Whitehead, R, Wilburn, W S

“…We report the first observation of the parity-violating gamma-ray asymmetry A_{γ}^{np} in neutron-proton capture using polarized cold neutrons incident on a…”
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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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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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COHERENT Collaboration data release from the first observation of coherent elastic neutrino-nucleus scattering by COHERENT Collaboration, Akimov, D, Albert, J. B, An, P, Awe, C, Barbeau, P. S, Becker, B, Belov, V, Blackston, M. A, Bolozdynya, A, Brown, A, Burenkov, A, Cabrera-Palmer, B, Cervantes, M, Collar, J. I, Cooper, R. J, Cooper, R. L, Cuesta, C, Daughhetee, J, Dean, D. J, Coello, M. del Valle, Detwiler, J, D'Onofrio, M, Eberhardt, A, Efremenko, Y, Elliott, S. R, Etenko, A, Fabris, L, Febbraro, M, Fields, N, Fox, W, Fu, Z, Galindo-Uribarri, A, Green, M. P, Hai, M, Heath, M. R, Hedges, S, Hornback, D, Hossbach, T. W, Iverson, E. B, Kaemingk, M, Kaufman, L. J, Klein, S. R, Khromov, A, Ki, S, Konovalov, A, Kovalenko, A, Kremer, M, Kumpan, A, Leadbetter, C, Li, L, Lu, W, Mann, K, Markoff, D. M, Melikyan, Y, Miller, K, Moreno, H, Mueller, P. E, Naumov, P, Newby, J, Orrell, J. L, Overman, C. T, Parno, D. S, Penttila, S, Perumpilly, G, Radford, D. C, Rapp, R, Ray, H, Raybern, J, Reyna, D, Rich, G. C, Rimal, D, Rudik, D, Salvat, D. J, Scholberg, K, Scholz, B, Sinev, G, Snow, W. M, Sosnovtsev, V, Shakirov, A, Suchyta, S, Suh, B, Tayloe, R, Thornton, R. T, Tolstukhin, I, Vanderwerp, J, Varner, R. L, Virtue, C. J, Wan, Z, Yoo, J, Yu, C. -H, Zawada, A, Zderic, A, Zettlemoyer, J

“…This release includes data and information necessary to perform independent analyses of the COHERENT result presented in Akimov et al., arXiv:1708.01294…”
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The new Cold Neutron Chopper Spectrometer at the Spallation Neutron Source - Design and Performance by Ehlers, G, Podlesnyak, A, Niedziela, J. L, Iverson, E. B

“…Review of Scientific Instruments 82, 085108 (2011) The design and performance of the new Cold Neutron Chopper Spectrometer (CNCS) at the Spallation Neutron…”
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