National Library of Energy BETA

Sample records for neutrino astrophysics division

  1. Birth of Neutrino Astrophysics

    ScienceCinema (OSTI)

    None

    2011-10-06

    Based mainly on the results of two experiments, KamiokaNDE and Super-KamiokaNDE, the birth of neutrino astrophysics will be described. At the end, the result of the third generation Kamioka experiment, KamLAND, will be discussed together with the future possibilities.Organiser(s): Daniel Treille / EP DivisionNote: * Tea & coffee will be served at 16:00 hrs. Please note unusual day.

  2. Neutrino mixing and oscillations in astrophysical environments

    SciTech Connect (OSTI)

    Balantekin, A. B.

    2014-05-02

    A brief review of the current status of neutrino mixing and oscillations in astrophysical environments, with particular emphasis on the Sun and core-collapse supernovae, is given. Implications of the existence of sterile states which mix with the active neutrinos are discussed.

  3. Technology Development for a Neutrino AstrophysicalObservatory

    SciTech Connect (OSTI)

    Chaloupka, V.; Cole, T.; Crawford, H.J.; He, Y.D.; Jackson, S.; Kleinfelder, S.; Lai, K.W.; Learned, J.; Ling, J.; Liu, D.; Lowder, D.; Moorhead, M.; Morookian, J.M.; Nygren, D.R.; Price, P.B.; Richards, A.; Shapiro, G.; Shen, B.; Smoot, George F.; Stokstad, R.G.; VanDalen, G.; Wilkes, J.; Wright, F.; Young, K.

    1996-02-01

    We propose a set of technology developments relevant to the design of an optimized Cerenkov detector for the study of neutrino interactions of astrophysical interest. Emphasis is placed on signal processing innovations that enhance significantly the quality of primary data. These technical advances, combined with field experience from a follow-on test deployment, are intended to provide a basis for the engineering design for a kilometer-scale Neutrino Astrophysical Observatory.

  4. Technology development for a neutrino astrophysical observatory. Letter of intent

    SciTech Connect (OSTI)

    Chaloupka, V.; Cole, T.; Crawford, H.J.

    1996-02-01

    The authors propose a set of technology developments relevant to the design of an optimized Cerenkov detector for the study of neutrino interactions of astrophysical interest. Emphasis is placed on signal processing innovations that enhance significantly the quality of primary data. These technical advances, combined with field experience from a follow-on test deployment, are intended to provide a basis for the engineering design for a kilometer-scale Neutrino Astrophysical Observatory.

  5. Dark matter vs. neutrinos: the effect of astrophysical uncertainties and timing information on the neutrino floor

    SciTech Connect (OSTI)

    Davis, Jonathan H.

    2015-03-09

    Future multi-tonne Direct Detection experiments will be sensitive to solar neutrino induced nuclear recoils which form an irreducible background to light Dark Matter searches. Indeed for masses around 6 GeV the spectra of neutrinos and Dark Matter are so similar that experiments are said to run into a neutrino floor, for which sensitivity increases only marginally with exposure past a certain cross section. In this work we show that this floor can be overcome using the different annual modulation expected from solar neutrinos and Dark Matter. Specifically for cross sections below the neutrino floor the DM signal is observable through a phase shift and a smaller amplitude for the time-dependent event rate. This allows the exclusion power to be improved by up to an order of magnitude for large exposures. In addition we demonstrate that, using only spectral information, the neutrino floor exists over a wider mass range than has been previously shown, since the large uncertainties in the Dark Matter velocity distribution make the signal spectrum harder to distinguish from the neutrino background. However for most velocity distributions it can still be surpassed using timing information, and so the neutrino floor is not an absolute limit on the sensitivity of Direct Detection experiments.

  6. Support for 26th International Conference on Neutrino Physics and Astrophysics

    SciTech Connect (OSTI)

    Kearns, Edward; Feldman, Gary

    2014-06-08

    The XXVI International Conference on Neutrino Physics and Astrophysics (Neutrino 2014) was held in Boston, U.S.A. from June 2 to 7, 2014. The Conference was co-­hosted by Boston University, Harvard University, M.I.T., and Tufts University. The Conference welcomed 549 registered participants from 33 countries. The Boston University Student Village offered an inexpensive housing option and was taken advantage of by 282 attendees. The lecture venue was the George Sherman Union at Boston University. There were 63 scientific presentations by speakers from 15 countries. The Conference held two poster sessions with a total of 287 posters. The Conference featured a reception at the M.I.T. Museum plus a multi-­week exhibition on neutrino physics capped by public presentations on the closing date of the conference. The banquet was a strolling buffet dinner held at the New England Aquarium.

  7. Possible explanation for the low flux of high energy astrophysical muon neutrinos

    SciTech Connect (OSTI)

    Pakvasa, Sandip

    2013-05-23

    I consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant sources; specifically, (i) neutrino decay and (ii) neutrinos being pseudo-Dirac particles. This would provide a mechanism for the lack of high energy muon events in the Icecube detector.

  8. Particle Astrophysics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Particle Astrophysics Particle Astrophysics Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505) 667-5657 Email Particle Astrophysics Stars offer unique laboratories for particle physics. They can be sensitive to minute interactions of neutrinos, as well as to other, hypothetical weakly interacting particles. The origin of this sensitivity lies in the mechanism of stellar evolution: it can be sped up, or even

  9. Current trends in non-accelerator particle physics: 1, Neutrino mass and oscillation. 2, High energy neutrino astrophysics. 3, Detection of dark matter. 4, Search for strange quark matter. 5, Magnetic monopole searches

    SciTech Connect (OSTI)

    He, Yudong |

    1995-07-01

    This report is a compilation of papers reflecting current trends in non-accelerator particle physics, corresponding to talks that its author was invited to present at the Workshop on Tibet Cosmic Ray Experiment and Related Physics Topics held in Beijing, China, April 4--13, 1995. The papers are entitled `Neutrino Mass and Oscillation`, `High Energy Neutrino Astrophysics`, `Detection of Dark Matter`, `Search for Strange Quark Matter`, and `Magnetic Monopole Searches`. The report is introduced by a survey of the field and a brief description of each of the author`s papers.

  10. Neutrino Observations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Observations from the Sudbury Neutrino Observatory A.W.P. Poon 1 Institute for Nuclear and Particle Astrophysics, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Abstract. The Sudbury Neutrino Observatory (SNO) is a water imaging Cherenkov detector. Its usage of 1000 metric tons of D 2 O as target allows the SNO detector to make a solar-model independent test of the neutrino oscillation hypothesis by simultaneously measuring the solar ν e flux and the total flux of all active neutrino

  11. Fermilab | Inquiring Minds | Neutrino | Discovery | Particles...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | theory | astrophysics | discoveries at Fermilab Discoveries at Fermilab - The Tau Neutrino Neutrino Symbol An international collaboration of scientists at the Department...

  12. Compressible Astrophysics Simulation Code

    Energy Science and Technology Software Center (OSTI)

    2007-07-18

    This is an astrophysics simulation code involving a radiation diffusion module developed at LLNL coupled to compressible hydrodynamics and adaptive mesh infrastructure developed at LBNL. One intended application is to neutrino diffusion in core collapse supernovae.

  13. Nuclear Astrophysics - Research - Cyclotron Institute

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    REACTION. Nuclear astrophysics research measures reaction rates for proton-capture reactions such as 7Be(p,)8B, which is the sole source of high energy neutrinos from our sun. ...

  14. Masatoshi Koshiba and Cosmic Neutrinos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Masatoshi Koshiba and Cosmic Neutrinos Resources with Additional Information Masatoshi Koshiba Courtesy of Sebastian Brandt 'The 2002 Nobel Prize in Physics has been awarded to ... Masatoshi Koshiba of the International Center for Elementary Particle Physics at the University of Tokyo in Japan, ... "for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos." ... Neutrinos are important in astrophysics since they might have played a considerable

  15. Physics, Computer Science and Mathematics Division. Annual report, January 1-December 31, 1980

    SciTech Connect (OSTI)

    Birge, R.W.

    1981-12-01

    Research in the physics, computer science, and mathematics division is described for the year 1980. While the division's major effort remains in high energy particle physics, there is a continually growing program in computer science and applied mathematics. Experimental programs are reported in e/sup +/e/sup -/ annihilation, muon and neutrino reactions at FNAL, search for effects of a right-handed gauge boson, limits on neutrino oscillations from muon-decay neutrinos, strong interaction experiments at FNAL, strong interaction experiments at BNL, particle data center, Barrelet moment analysis of ..pi..N scattering data, astrophysics and astronomy, earth sciences, and instrument development and engineering for high energy physics. In theoretical physics research, studies included particle physics and accelerator physics. Computer science and mathematics research included analytical and numerical methods, information analysis techniques, advanced computer concepts, and environmental and epidemiological studies. (GHT)

  16. Neutrino Oscillation Physics

    SciTech Connect (OSTI)

    Kayser, Boris

    2012-06-01

    To complement the neutrino-physics lectures given at the 2011 International School on Astro Particle Physics devoted to Neutrino Physics and Astrophysics (ISAPP 2011; Varenna, Italy), at the 2011 European School of High Energy Physics (ESHEP 2011; Cheila Gradistei, Romania), and, in modified form, at other summer schools, we present here a written description of the physics of neutrino oscillation. This description is centered on a new way of deriving the oscillation probability. We also provide a brief guide to references relevant to topics other than neutrino oscillation that were covered in the lectures. Neutrinos and photons are by far the most abundant elementary particles in the universe. Thus, if we would like to comprehend the universe, we must understand the neutrinos. Of course, studying the neutrinos is challenging, since the only known forces through which these electrically-neutral leptons interact are the weak force and gravity. Consequently, interactions of neutrinos in a detector are very rare events, so that very large detectors and intense neutrino sources are needed to make experiments feasible. Nevertheless, we have confirmed that the weak interactions of neutrinos are correctly described by the Standard Model (SM) of elementary particle physics. Moreover, in the last 14 years, we have discovered that neutrinos have nonzero masses, and that leptons mix. These discoveries have been based on the observation that neutrinos can change from one 'flavor' to another - the phenomenon known as neutrino oscillation. We shall explain the physics of neutrino oscillation, deriving the probability of oscillation in a new way. We shall also provide a very brief guide to references that can be used to study some major neutrino-physics topics other than neutrino oscillation.

  17. Booster Neutrino Experiment - About Neutrinos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from major neutrino experiments and important results in neutrino physics. Includes java applets. Janet's Neutrino Oscillation Page More extensive material about neutrino...

  18. ANTARES deep sea neutrino telescope results

    SciTech Connect (OSTI)

    Mangano, Salvatore [IFIC - Instituto de Fsica Corpuscular, Edificio Institutos de Investigatin, 46071 Valencia (Spain); Collaboration: ANTARES Collaboration

    2014-01-01

    The ANTARES experiment is currently the largest underwater neutrino telescope in the Northern Hemisphere. It is taking high quality data since 2007. Its main scientific goal is to search for high energy neutrinos that are expected from the acceleration of cosmic rays from astrophysical sources. This contribution reviews the status of the detector and presents several analyses carried out on atmospheric muons and neutrinos. For example it shows the results from the measurement of atmospheric muon neutrino spectrum and of atmospheric neutrino oscillation parameters as well as searches for neutrinos from steady cosmic point-like sources, for neutrinos from gamma ray bursts and for relativistic magnetic monopoles.

  19. Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Raymond Davis, Jr., Solar Neutrinos, and the Solar Neutrino Problem Resources with Additional Information Raymond Davis, Jr. Photo Courtesy of Brookhaven National Laboratory (BNL) Raymond Davis, Jr., who conducted research in the Chemistry Department at Brookhaven National Laboratory (BNL) from 1948 through 1984, was awarded the 2002 Nobel Prize in Physics "for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos." Dr. Davis is also a recipient

  20. Neutrinos and dark matter

    SciTech Connect (OSTI)

    Ibarra, Alejandro

    2015-07-15

    Neutrinos could be key particles to unravel the nature of the dark matter of the Universe. On the one hand, sterile neutrinos in minimal extensions of the Standard Model are excellent dark matter candidates, producing potentially observable signals in the form of a line in the X-ray sky. On the other hand, the annihilation or the decay of dark matter particles produces, in many plausible dark matter scenarios, a neutrino flux that could be detected at neutrino telescopes, thus providing non-gravitational evidence for dark matter. More conservatively, the non-observation of a significant excess in the neutrino fluxes with respect to the expected astrophysical backgrounds can be used to constrain dark matter properties, such as the self-annihilation cross section, the scattering cross section with nucleons and the lifetime.

  1. Lab Astrophysics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    lab astrophysics Lab Astrophysics NIF experiments support studies relevant to the entire lifecycle of a star, from its formation from cold gas in molecular clouds, through its subsequent slow evolution, and on to what might be a rapid, explosive death. To determine a star's structure throughout the various stages of its life, astrophysicists need NIF's ability to mimic the temperatures (10 to 30 million kelvins or 18 to 54 million degrees Fahrenheit) found in stars' cores. One astrophysics

  2. DEAP and CLEAN Detectors for Low Energy Particle Astrophysics...

    Office of Scientific and Technical Information (OSTI)

    Title: DEAP and CLEAN Detectors for Low Energy Particle Astrophysics Liquid cryogens such as neon and argon hold promise as targets for low-energy solar neutrinos and WIMP dark ...

  3. Neutrino Theory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrino Theory Neutrino Theory Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505) 667-5657 Email Neutrino Theory solar neutrino Figure 1: Impact of the solar neutrino mass splitting on collective oscillations of supernova neutrinos. Notice that while the strictly vanishing splitting gives the two-flavor result, even a tiny nonzero value qualitatively changes the answer. From [1]. Neutrino physics underwent

  4. neutrinos matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    nu0001 PDF full text version nu0001 HTML full text version nu0002 Credits nu0003 Contents nu0004 Introduction nu0005 Neutrinos are Everywhere nu0006 What are neutrinos? nu0007 A new particle? nu0008 Origins nu0009 Making neutrinos nu0010 Seeing neutrinos nu0011 Big detector nu0012 Neutrinos are there nu0013 Loners of the universe nu0014 The neutrino family nu0015 Neutrino tracks nu0016 Do they have mass? nu0017 What if they do? nu0018 Oscillations nu0019 Seeing the invisible nu0020 Neutrinos

  5. A Key Role for Dimension in the Neutrino Mechanism of Core-Collapse...

    Office of Scientific and Technical Information (OSTI)

    to demonstrate an important role for spatial dimension and instabilities in the ... ASTRONOMY; ASTROPHYSICS; BLACK HOLES; DIMENSIONS; EXPLOSIONS; NEUTRINOS; NEUTRON STARS; ...

  6. I. Neutrino Oscillations with the MiniBooNE Experiment at FNAL...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Outline: Motivation: astrophysics and cosmology "Sterile" Neutrinos *Cosmology: o Dark matter o Baryogenisis o Dark energy *Core collapse supernova * Explosion processes * Heavy ...

  7. Neutrino Physics

    DOE R&D Accomplishments [OSTI]

    Lederman, L. M.

    1963-01-09

    The prediction and verification of the neutrino are reviewed, together with the V A theory for its interactions (particularly the difficulties with the apparent existence of two neutrinos and the high energy cross section). The Brookhaven experiment confirming the existence of two neutrinos and the cross section increase with momentum is then described, and future neutrino experiments are considered. (D.C.W.)

  8. Neutrino Theory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    interactions, Phys.Lett. B 594, 347 (2004). A. Friedland and C. Lunardini, A Test of tau neutrino interactions with atmospheric neutrinos and K2K, Phys.Rev. D 72, 053009...

  9. Weak interaction processes in nuclei involving neutrinos and CDM candidates

    SciTech Connect (OSTI)

    Kosmas, T. S.; Tsakstara, V. [Theoretical Physics Section, University of Ioannina, GR 45110 Ioannina (Greece); Divari, P. C. [Department of Physical Sciences, Hellenic Army Academy, Vari 16673, Attica (Greece); Sinatkas, J. [Department of Informatics and Computer Technology, TEI of Western Macedonia, GR-52100 Kastoria (Greece)

    2009-11-09

    In this work, we concentrate on the nuclear physics aspects of low-energy neutrinos and in particular on problems related to neutrino detection by terrestrial experiments, neutrino astrophysics and neutrino-nucleus interactions. The detection of low-flux neutrinos, feasible by measuring the energy recoil of the recoiling nucleus with gaseous-detectors having very-low threshold-energy, is carried out in conjunction with direct-detection of cold dark matter events and nonstandard physics searches like the neutrinoless double beta decay.

  10. Neutrino factory

    SciTech Connect (OSTI)

    Bogomilov, M.; Matev, R.; Tsenov, R.; Dracos, M.; Bonesini, M.; Palladino, V.; Tortora, L.; Mori, Y.; Planche, T.; Lagrange, J. B.; Kuno, Y.; Benedetto, E.; Efthymiopoulos, I.; Garoby, R.; Gilardoini, S.; Martini, M.; Wildner, E.; Prior, G.; Blondel, A.; Karadzhow, Y.; Ellis, M.; Kyberd, P.; Bayes, R.; Laing, A.; Soler, F. J. P.; Alekou, A.; Apollonio, M.; Aslaninejad, M.; Bontoiu, C.; Jenner, L. J.; Kurup, A.; Long, K.; Pasternak, J.; Zarrebini, A.; Poslimski, J.; Blackmore, V.; Cobb, J.; Tunnell, C.; Andreopoulos, C.; Bennett, J. R.J.; Brooks, S.; Caretta, O.; Davenne, T.; Densham, C.; Edgecock, T. R.; Fitton, M.; Kelliher, D.; Loveridge, P.; McFarland, A.; Machida, S.; Prior, C.; Rees, G.; Rogers, C.; Rooney, M.; Thomason, J.; Wilcox, D.; Booth, C.; Skoro, G.; Back, J. J.; Harrison, P.; Berg, J. S.; Fernow, R.; Gallardo, J. C.; Gupta, R.; Kirk, H.; Simos, N.; Stratakis, D.; Souchlas, N.; Witte, H.; Bross, A.; Geer, S.; Johnstone, C.; Makhov, N.; Neuffer, D.; Popovic, M.; Strait, J.; Striganov, S.; Morfín, J. G.; Wands, R.; Snopok, P.; Bagacz, S. A.; Morozov, V.; Roblin, Y.; Cline, D.; Ding, X.; Bromberg, C.; Hart, T.; Abrams, R. J.; Ankenbrandt, C. M.; Beard, K. B.; Cummings, M. A.C.; Flanagan, G.; Johnson, R. P.; Roberts, T. J.; Yoshikawa, C. Y.; Graves, V. B.; McDonald, K. T.; Coney, L.; Hanson, G.

    2014-12-08

    The properties of the neutrino provide a unique window on physics beyond that described by the standard model. The study of subleading effects in neutrino oscillations, and the race to discover CP-invariance violation in the lepton sector, has begun with the recent discovery that theta(13) > 0. The measured value of theta(13) is large, emphasizing the need for a facility at which the systematic uncertainties can be reduced to the percent level. The neutrino factory, in which intense neutrino beams are produced from the decay of muons, has been shown to outperform all realistic alternatives and to be capable of making measurements of the requisite precision. Its unique discovery potential arises from the fact that only at the neutrino factory is it practical to produce high-energy electron (anti) neutrino beams of the required intensity. This paper presents the conceptual design of the neutrino factory accelerator facility developed by the European Commission Framework Programme 7 EURO nu. Design Study consortium. EURO nu coordinated the European contributions to the International Design Study for the Neutrino Factory (the IDS-NF) collaboration. The EURO nu baseline accelerator facility will provide 10(21) muon decays per year from 12.6 GeV stored muon beams serving a single neutrino detector situated at a source-detector distance of between 1 500 km and 2 500 km. A suite of near detectors will allow definitive neutrino-scattering experiments to be performed.

  11. Neutrino factory

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bogomilov, M.; Matev, R.; Tsenov, R.; Dracos, M.; Bonesini, M.; Palladino, V.; Tortora, L.; Mori, Y.; Planche, T.; Lagrange, J. B.; et al

    2014-12-08

    The properties of the neutrino provide a unique window on physics beyond that described by the standard model. The study of subleading effects in neutrino oscillations, and the race to discover CP-invariance violation in the lepton sector, has begun with the recent discovery that theta(13) > 0. The measured value of theta(13) is large, emphasizing the need for a facility at which the systematic uncertainties can be reduced to the percent level. The neutrino factory, in which intense neutrino beams are produced from the decay of muons, has been shown to outperform all realistic alternatives and to be capable ofmore » making measurements of the requisite precision. Its unique discovery potential arises from the fact that only at the neutrino factory is it practical to produce high-energy electron (anti) neutrino beams of the required intensity. This paper presents the conceptual design of the neutrino factory accelerator facility developed by the European Commission Framework Programme 7 EURO nu. Design Study consortium. EURO nu coordinated the European contributions to the International Design Study for the Neutrino Factory (the IDS-NF) collaboration. The EURO nu baseline accelerator facility will provide 10(21) muon decays per year from 12.6 GeV stored muon beams serving a single neutrino detector situated at a source-detector distance of between 1 500 km and 2 500 km. A suite of near detectors will allow definitive neutrino-scattering experiments to be performed.« less

  12. Solar Neutrinos

    DOE R&D Accomplishments [OSTI]

    Davis, R. Jr.; Harmer, D. S.

    1964-12-01

    The prospect of studying the solar energy generation process directly by observing the solar neutrino radiation has been discussed for many years. The main difficulty with this approach is that the sun emits predominantly low energy neutrinos, and detectors for observing low fluxes of low energy neutrinos have not been developed. However, experimental techniques have been developed for observing neutrinos, and one can foresee that in the near future these techniques will be improved sufficiently in sensitivity to observe solar neutrinos. At the present several experiments are being designed and hopefully will be operating in the next year or so. We will discuss an experiment based upon a neutrino capture reaction that is the inverse of the electron-capture radioactive decay of argon-37. The method depends upon exposing a large volume of a chlorine compound, removing the radioactive argon-37 and observing the characteristic decay in a small low-level counter.

  13. Physics division annual report 2006.

    SciTech Connect (OSTI)

    Glover, J.; Physics

    2008-02-28

    This report highlights the activities of the Physics Division of Argonne National Laboratory in 2006. The Division's programs include the operation as a national user facility of ATLAS, the Argonne Tandem Linear Accelerator System, research in nuclear structure and reactions, nuclear astrophysics, nuclear theory, investigations in medium-energy nuclear physics as well as research and development in accelerator technology. The mission of nuclear physics is to understand the origin, evolution and structure of baryonic matter in the universe--the core of matter, the fuel of stars, and the basic constituent of life itself. The Division's research focuses on innovative new ways to address this mission.

  14. Nuclear Astrophysics Animations from the Nuclear Astrophysics Group at Clemson University

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Meyer, Bradley; The, Lih-Sin

    The nuclear astrophysics group at Clemson University in South Carolina develops on-line tools and computer programs for astronomy, nuclear physics, and nuclear astrophysics. They have also done short animations that illustrate results from research with some of their tools. The animations are organized into three sections. The r-Process Movies demonstrate r-Process network calculations from the paper "Neutrino Capture and the R-Process" Meyer, McLaughlin, and Fuller, Phys. Rev. C, 58, 3696-3710 (1998). The Alpha-Rich Freezeout Movies are related to the reference: Standard alpha-rich freezeout calculation from The, Clayton, Jin, and Meyer 1998, Astrophysical Journal, "Reaction Rates Governing the Synthesis of 44Ti" At the current writing, the category for Low Metallicity s-Process Movies has only one item called n, p, 13C, 14N, 54Fe, and 88Sr Time evolution in convective zone.

  15. Long-Baseline Neutrino Facility / Deep Underground Neutrino Project...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Long-Baseline Neutrino Facility Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline Neutrino Facility Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline ...

  16. Future Long-Baseline Neutrino Oscillations: View from North America

    SciTech Connect (OSTI)

    Wilson, R. J.

    2015-06-01

    In late 2012 the US Department of Energy gave approval for the first phase of the Long-Baseline Neutrino Experiment (LBNE), that will conduct a broad scientific program including neutrino oscillations, neutrino scattering physics, search for baryon violation, supernova burst neutrinos and other related astrophysical phenomena. The project is now being reformulated as an international facility hosted by the United States. The facility will consist of an intense neutrino beam produced at Fermi National Accelerator Laboratory (Fermilab), a highly capable set of neutrino detectors on the Fermilab campus, and a large underground liquid argon time projection chamber at Sanford Underground Research Facility (SURF) in South Dakota 1300 km from Fermilab. With an intense beam and massive far detector, the experimental program at the facility will make detailed studies of neutrino oscillations, including measurements of the neutrino mass hierarchy and Charge-Parity symmetry violation, by measuring neutrino and anti-neutrino mixing separately. At the near site, the high-statistics neutrino scattering data will allow for many cross section measurements and precision tests of the Standard Model. This presentation will describe the configuration developed by the LBNE collaboration, the broad physics program, and the status of the formation of the international facility.

  17. Double beta decay, Majorana neutrinos, and neutrino mass

    SciTech Connect (OSTI)

    Avignone, Frank T. III; Elliott, Steven R.; Engel, Jonathan [Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208 (United States); Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255 (United States)

    2008-04-15

    The theoretical and experimental issues relevant to neutrinoless double beta decay are reviewed. The impact that a direct observation of this exotic process would have on elementary particle physics, nuclear physics, astrophysics, and cosmology is profound. Now that neutrinos are known to have mass and experiments are becoming more sensitive, even the nonobservation of neutrinoless double beta decay will be useful. If the process is actually observed, we will immediately learn much about the neutrino. The status and discovery potential of proposed experiments are reviewed in this context, with significant emphasis on proposals favored by recent panel reviews. The importance of and challenges in the calculation of nuclear matrix elements that govern the decay are considered in detail. The increasing sensitivity of experiments and improvements in nuclear theory make the future exciting for this field at the interface of nuclear and particle physics.

  18. Sandia National Laboratories: Astrophysics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Astrophysics Astrophysics Z Machine Experiments Address Important Astrophysical Questions Sandia's Z Machine provides us with the capability to delve deep into discovery science to study the behavior of matter at extreme conditions. This contributes to our fundamental understanding of nature. Most of the universe's matter is under the extreme conditions that we study with Z. It is surprising to think that the conditions that we are accustomed to here on Earth are actually quite rare in the

  19. Neutrino signals from dark matter decay

    SciTech Connect (OSTI)

    Covi, Laura; Grefe, Michael; Ibarra, Alejandro; Tran, David E-mail: michael.grefe@desy.de E-mail: david.tran@ph.tum.de

    2010-04-01

    We investigate different neutrino signals from the decay of dark matter particles to determine the prospects for their detection, and more specifically if any spectral signature can be disentangled from the background in present and future neutrino observatories. If detected, such a signal could bring an independent confirmation of the dark matter interpretation of the dramatic rise in the positron fraction above 10 GeV recently observed by the PAMELA satellite experiment and offer the possibility of distinguishing between astrophysical sources and dark matter decay or annihilation. In combination with other signals, it may also be possible to distinguish among different dark matter decay channels.

  20. Nuclear Science Division: 1993 Annual report

    SciTech Connect (OSTI)

    Myers, W.D.

    1994-06-01

    This report describes the activities of the Nuclear Science Division for the 1993 calendar year. This was another significant year in the history of the Division with many interesting and important accomplishments. Activities for the following programs are covered here: (1) nuclear structure and reactions program; (2) the Institute for Nuclear and Particle Astrophysics; (3) relativistic nuclear collisions program; (4) nuclear theory program; (5) nuclear data evaluation program, isotope project; and (6) 88-inch cyclotron operations.

  1. Flavor ratios of extragalactic neutrinos and neutrino shortcuts in extra dimensions

    SciTech Connect (OSTI)

    Aeikens, Elke; Päs, Heinrich; Pakvasa, Sandip; Sicking, Philipp

    2015-10-02

    The recent measurement of high energy extragalactic neutrinos by the IceCube Collaboration has opened a new window to probe non-standard neutrino properties. Among other effects, sterile neutrino altered dispersion relations (ADRs) due to shortcuts in an extra dimension can significantly affect astrophysical flavor ratios. We discuss two limiting cases of this effect, first active-sterile neutrino oscillations with a constant ADR potential and second an MSW-like resonant conversion arising from geodesics oscillating around the brane in an asymmetrically warped extra dimension. We demonstrate that the second case has the potential to suppress significantly the flux of specific flavors such as ν{sub μ} or ν{sub τ} at high energies.

  2. The neutrino turns 60

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The neutrino turns 60 The neutrino turns 60 Although neutrinos are extremely abundant, it took 26 years for scientists to confirm their existence. In the 60 years since the neutrino's discovery, we've slowly learned about this intriguing particle. June 20, 2016 Although neutrinos are extremely abundant, it took 26 years for scientists to confirm their existence. In the 60 years since the neutrino's discovery, we've slowly learned about this intriguing particle. Artwork by Sandbox Studio, Chicago

  3. Physics Division activities report, 1986--1987

    SciTech Connect (OSTI)

    Not Available

    1987-01-01

    This report summarizes the research activities of the Physics Division for the years 1986 and 1987. Areas of research discussed in this paper are: research on e/sup +/e/sup /minus// interactions; research on p/bar p/ interactions; experiment at TRIUMF; double beta decay; high energy astrophysics; interdisciplinary research; and advanced technology development and the SSC.

  4. Nuclear Astrophysics Animations from the Nuclear Astrophysics Group at Clemson University

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Meyer, Bradley; The, Lih-Sin

    The animations are organized into three sections. The r-Process Movies demonstrate r-Process network calculations from the paper "Neutrino Capture and the R-Process" Meyer, McLaughlin, and Fuller, Phys. Rev. C, 58, 3696-3710 (1998). The Alpha-Rich Freezeout Movies are related to the reference: Standard alpha-rich freezeout calculation from The, Clayton, Jin, and Meyer 1998, Astrophysical Journal, "Reaction Rates Governing the Synthesis of 44Ti" At the current writing, the category for Low Metallicity s-Process Movies has only one item called n, p, 13C, 14N, 54Fe, and 88Sr Time evolution in convective zone.

  5. Lamp Divisions

    Office of Legacy Management (LM)

    --- /A;; i :' r%i;in~house ilEc;' i:Z3:~cra:ion Lamp Divisions , _.. (I +i. 0 :,,,rg. . I . . -= i?e p/q! qe)-' &se pw E.rcale?l iev, Je!sey 07m March 20, 1 gs? ::r . J. A. Jones I ti. 5. Muclear Regulatory Commission .> = ..- haterials Licensing Branch -s - ,.I, - - Division of Fuel Cycle and hateri al Safety LY. , $2 - _ . ' -' . 3 _- - Yeshington, C. C. 2@555 - :_ :--, =-- -- .-?J -.: y...., : :- 7 Dear Mr. Jones : y-- --, ? . *I 2=15 2 r; X -P The following is our final report of the

  6. Astrophysics at NERSC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The image above is snapshot of a movie from The Center for Astrophysical Thermonuclear Flashes at the University of Chicago; DOE SciDAC ProgramBrad Gallagher, George...

  7. Neutrino telescopes in the World

    SciTech Connect (OSTI)

    Ernenwein, J.-P.

    2007-01-12

    Neutrino astronomy has rapidly developed these last years, being the only way to get specific and reliable information about astrophysical objects still poorly understood.Currently two neutrino telescopes are operational in the World: BAIKAL, in the lake of the same name in Siberia, and AMANDA, in the ices of the South Pole. Two telescopes of the same type are under construction in the Mediterranean Sea: ANTARES and NESTOR. All these telescopes belong to a first generation, with an instrumented volume smaller or equal to 0.02 km3. Also in the Mediterranean Sea, the NEMO project is just in its stag phase, within the framework of a cubic kilometer size neutrino telescope study. Lastly, the ICECUBE detector, with a volume reaching about 1 km3, is under construction on the site of AMANDA experiment, while an extension of the BAIKAL detector toward km3 is under study. We will present here the characteristics of these experiments, as well as the results of their observations.

  8. Neutrinos in Nuclear Physics

    SciTech Connect (OSTI)

    McKeown, Bob

    2015-06-01

    Since the discovery of nuclear beta decay, nuclear physicists have studied the weak interaction and the nature of neutrinos. Many recent and current experiments have been focused on the elucidation of neutrino oscillations and neutrino mass. The quest for the absolute value of neutrino mass continues with higher precision studies of the tritium beta decay spectrum near the endpoint. Neutrino oscillations are studied through measurements of reactor neutrinos as a function of baseline and energy. And experiments searching for neutrinoless double beta decay seek to discover violation of lepton number and establish the Majorana nature of neutrino masses.

  9. Why study neutrinos?

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Why study neutrinos? Neutrinos are by far the most abundant particles in the universe. About 100 trillion neutrinos pass through your body every second without interacting with any of the particles in your body. You never notice them. The combination of that ghostly presence and the important role neutrinos play in the universe captivates physicists. Neutrinos play a role in many fundamental aspects of our lives; they are produced in nuclear fusion processes that power the sun and stars, they

  10. Neutrino Physics at Fermilab

    ScienceCinema (OSTI)

    Saoulidou, Niki

    2010-01-08

    Neutrino oscillations provide the first evidence for physics beyond the Standard Model. I will briefly overview the neutrino "hi-story", describing key discoveries over the past decades that shaped our understanding of neutrinos and their behavior. Fermilab was, is and hopefully will be at the forefront of the accelerator neutrino experiments.  NuMI, the most powerful accelerator neutrino beam in the world has ushered us into the era of precise measurements. Its further upgrades may give a chance to tackle the remaining mysteries of the neutrino mass hierarchy and possible CP violation.

  11. Experimental Neutrino Physics: Final Report

    SciTech Connect (OSTI)

    Lane, Charles E.; Maricic, Jelena

    2012-09-05

    Experimental studies of neutrino properties, with particular emphasis on neutrino oscillation, mass and mixing parameters. This research was pursued by means of underground detectors for reactor anti-neutrinos, measuring the flux and energy spectra of the neutrinos. More recent investigations have been aimed and developing detector technologies for a long-baseline neutrino experiment (LBNE) using a neutrino beam from Fermilab.

  12. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from major neutrino experiments and important results in neutrino physics. Includes java applets. Janet's Neutrino Oscillation Page More extensive material about neutrino...

  13. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Some neutrino interactions produce the neutrino's namesake lepton (electron, muon, or tau); this allows the type of neutrino to be tagged. Since neutrino oscillation searches...

  14. Short Baseline Neutrino

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    decay region is followed by an absorber and 450 m of dirt, beyond which only the neutrino component of the beam survives. e ? The MiniBooNE Neutrino Beam March 10, 2003...

  15. Solar Neutrino Problem

    DOE R&D Accomplishments [OSTI]

    Davis, R. Jr.; Evans, J. C.; Cleveland, B. T.

    1978-04-28

    A summary of the results of the Brookhaven solar neutrino experiment is given and discussed in relation to solar model calculations. A review is given of the merits of various new solar neutrino detectors that were proposed.

  16. Measuring Neutrino Interactions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Measuring Neutrino Interactions with MiniBooNE R. Tayloe for the MiniBooNE collaboration Physics Department, Indiana University Bloomington, IN 47405, USA Abstract. The MiniBooNE neutrino oscillation experiment has collected a large sample of charged- and neutral-current neutrino interaction events. These samples are important to understand the normalization and backgrounds in neutrino oscillation searches. They also reveal insight into the structure of the nucleus and nucleon. The MiniBooNE

  17. Introduction to Neutrino Physics

    SciTech Connect (OSTI)

    Linares, Edgar Casimiro

    2009-04-30

    I present a basic introduction to the physics of the neutrino, with emphasis on experimental results and developments.

  18. Geo-neutrino Observation

    SciTech Connect (OSTI)

    Dye, S. T.; Alderman, M.; Batygov, M.; Learned, J. G.; Matsuno, S.; Mahoney, J. M.; Pakvasa, S.; Rosen, M.; Smith, S.; Varner, G.; McDonough, W. F.

    2009-12-17

    Observations of geo-neutrinos measure radiogenic heat production within the earth, providing information on the thermal history and dynamic processes of the mantle. Two detectors currently observe geo-neutrinos from underground locations. Other detection projects in various stages of development include a deep ocean observatory. This paper presents the current status of geo-neutrino observation and describes the scientific capabilities of the deep ocean observatory, with emphasis on geology and neutrino physics.

  19. LUNA: Nuclear astrophysics underground

    SciTech Connect (OSTI)

    Best, A.

    2015-02-24

    Underground nuclear astrophysics with LUNA at the Laboratori Nazionali del Gran Sasso spans a history of 20 years. By using the rock overburden of the Gran Sasso mountain chain as a natural cosmic-ray shield very low signal rates compared to an experiment on the surface can be tolerated. The cross sectons of important astrophysical reactions directly in the stellar energy range have been successfully measured. In this proceeding we give an overview over the key accomplishments of the experiment and an outlook on its future with the expected addition of an additional accelerator to the underground facilities, enabling the coverage of a wider energy range and the measurement of previously inaccessible reactions.

  20. Collective neutrino oscillations in supernovae

    SciTech Connect (OSTI)

    Duan, Huaiyu [Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States)

    2014-06-24

    In a dense neutrino medium neutrinos can experience collective flavor transformation through the neutrino-neutrino forward scattering. In this talk we present some basic features of collective neutrino flavor transformation in the context in core-collapse supernovae. We also give some qualitative arguments for why and when this interesting phenomenon may occur and how it may affect supernova nucleosynthesis.

  1. Argonne Physics Division - ATLAS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Safety Tom Mullen, Physics Division Safety Engineer. Please Note: If you have any comments or concerns regarding safety at ATLAS, please contact the Physics Division Safety ...

  2. MINOS Sterile Neutrino Search

    SciTech Connect (OSTI)

    Koskinen, David Jason; /University Coll. London

    2009-09-01

    The Main Injector Neutrino Oscillation Search (MINOS) is a long-baseline accelerator neutrino experiment designed to measure properties of neutrino oscillation. Using a high intensity muon neutrino beam, produced by the Neutrinos at Main Injector (NuMI) complex at Fermilab, MINOS makes two measurements of neutrino interactions. The first measurement is made using the Near Detector situated at Fermilab and the second is made using the Far Detector located in the Soudan Underground laboratory in northern Minnesota. The primary goal of MINOS is to verify, and measure the properties of, neutrino oscillation between the two detectors using the {nu}{sub {mu}} {yields} V{sub {tau}} transition. A complementary measurement can be made to search for the existence of sterile neutrinos; an oft theorized, but experimentally unvalidated particle. The following thesis will show the results of a sterile neutrino search using MINOS RunI and RunII data totaling {approx}2.5 x 10{sup 20} protons on target. Due to the theoretical nature of sterile neutrinos, complete formalism that covers transition probabilities for the three known active states with the addition of a sterile state is also presented.

  3. Nuclear & Particle Physics, Astrophysics, Cosmology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nuclear & Particle Physics Nuclear & Particle Physics, Astrophysics, Cosmology National security depends on science and technology. The United States relies on Los Alamos National ...

  4. The Fermilab Particle Astrophysics Center

    SciTech Connect (OSTI)

    Not Available

    2004-11-01

    The Particle Astrophysics Center was established in fall of 2004. Fermilab director Michael S. Witherell has named Fermilab cosmologist Edward ''Rocky'' Kolb as its first director. The Center will function as an intellectual focus for particle astrophysics at Fermilab, bringing together the Theoretical and Experimental Astrophysics Groups. It also encompasses existing astrophysics projects, including the Sloan Digital Sky Survey, the Cryogenic Dark Matter Search, and the Pierre Auger Cosmic Ray Observatory, as well as proposed projects, including the SuperNova Acceleration Probe to study dark energy as part of the Joint Dark Energy Mission, and the ground-based Dark Energy Survey aimed at measuring the dark energy equation of state.

  5. Long-Baseline Neutrino Facility / Deep Underground Neutrino Project

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (LBNF-DUNE) | Department of Energy Long-Baseline Neutrino Facility / Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline Neutrino Facility / Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline Neutrino Facility / Deep Underground Neutrino Project (LBNF-DUNE) Chris Mossey, Deputy Lab Director (Fermi) and Project Director for LBNF-DUNE March 23, 2016 Presentation (5.94 MB) Key Resources PMCDP EVMS PARS IIe FPD Resource Center PM Newsletter Forms and Templates More Documents

  6. Environmental Assessment for Conducting Astrophysics and Other...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2000. Neutrino: Detectors & Beams web page, dated August 10, 2000, Neutrino Detector Array web page, dated March 24, 2000,

  7. EA-1943: Long Baseline Neutrino Facility/Deep Underground Neutrino...

    Broader source: Energy.gov (indexed) [DOE]

    May 27, 2015 EA-1943: Draft Environmental Assessment Long Baseline Neutrino FacilityDeep Underground Neutrino Experiment (LBNFDUNE) at Fermilab, Batavia, Illinois and the...

  8. Muon Neutrino to Electron Neutrino Oscillation in NO$\

    SciTech Connect (OSTI)

    Sachdev, Kanika

    2015-08-01

    NOvA is a long-baseline neutrino oscillation experiment optimized for electron neu- trino ( e) appearance in the NuMI beam, a muon neutrino ( $\

  9. IceVeto: Extended PeV neutrino astronomy in the Southern Hemisphere with IceCube

    SciTech Connect (OSTI)

    Auffenberg, Jan; Collaboration: IceCube Collaboration

    2014-11-18

    IceCube, the world's largest high-energy neutrino observatory, built at the South Pole, recently reported evidence of an astrophysical neutrino flux extending to PeV energies in the Southern Hemisphere. This observation raises the question of how the sensitivity in this energy range could be further increased. In the down-going sector, in IceCube's case the Southern Hemisphere, backgrounds from atmospheric muons and neutrinos pose a challenge to the identification of an astrophysical neutrino flux. The IceCube analysis, that led to the evidence for astrophysical neutrinos, is based on an in-ice veto strategy for background rejection. One possibility available to IceCube is the concept of an extended surface detector, IceVeto, which could allow the rejection of a large fraction of atmospheric backgrounds, primarily for muons from cosmic ray (CR) air showers as well as from neutrinos in the same air showers. Building on the experience of IceTop/IceCube, possibly the most cost-effective and sensitive way to build IceVeto is as an extension of the IceTop detector, with simple photomultiplier based detector modules for CR air shower detection. Initial simulations and estimates indicate that such a veto detector will significantly increase the sensitivity to an astrophysical flux of ?{sub ?} induced muon tracks in the Southern Hemisphere compared to current analyses. Here we present the motivation and capabilities based on initial simulations. Conceptual ideas for a simplified surface array will be discussed briefly.

  10. A prototype station for ARIANNA: a detector for cosmic neutrinos

    SciTech Connect (OSTI)

    Gerhardt, L.; Klein, S.; Stezelberger, T.; Barwick, S.; Dookayka, K.; Hanson, J.; Nichol, R.

    2010-05-27

    The Antarctic Ross Iceshelf Antenna Neutrino Array (ARIANNA) is a proposed detector for ultra-high energy astrophysical neutrinos. It will detect coherent radio Cherenkov emission from the particle showers produced by neutrinos with energies above about 1017 eV. ARIANNA will be built on the Ross Ice Shelf just off the coast of Antarctica, where it will eventually cover about 900 km2 in surface area. There, the ice-water interface below the shelf reflects radio waves, giving ARIANNA sensitivity to downward going neutrinos and improving its sensitivity to horizontally incident neutrinos. ARIANNA detector stations will each contain 4-8 antennas which search for brief pulses of 50 MHz to 1 GHz radio emission from neutrino interactions. We describe a prototype station for ARIANNA which was deployed in Moore's Bay on the Ross Ice Shelf in December 2009, discuss the design and deployment, and present some initial figures on performance. The ice shelf thickness was measured to be 572 +- 6 m at the deployment site.

  11. Neutrino-nucleus scattering of {sup 95,97}Mo and {sup 116}Cd

    SciTech Connect (OSTI)

    Ydrefors, E.; Almosly, W.; Suhonen, J.

    2013-12-30

    Accurate knowledge about the nuclear responses to supernova neutrinos for relevant nuclear targets is important both for neutrino detection and for astrophysical applications. In this paper we discuss the cross sections for the charged-current neutrino-nucleus scatterings off {sup 95,97}Mo and {sup 116}Cd. The microscopic quasiparticle-phonon model is adopted for the odd-even nuclei {sup 95,97}Mo. In the case of {sup 116}Cd we present cross sections both for the Bonn one-boson-exchange potential and self-consistent calculations based on modern Skyrme interactions.

  12. Solar neutrino detection

    SciTech Connect (OSTI)

    Miramonti, Lino

    2009-04-30

    More than 40 years ago, neutrinos where conceived as a way to test the validity of the solar models which tell us that stars are powered by nuclear fusion reactions. The first measurement of the neutrino flux, in 1968 in the Homestake mine in South Dakota, detected only one third of the expected value, originating what has been known as the Solar Neutrino Problem. Different experiments were built in order to understand the origin of this discrepancy. Now we know that neutrinos undergo oscillation phenomenon changing their nature traveling from the core of the Sun to our detectors. In the work the 40 year long saga of the neutrino detection is presented; from the first proposals to test the solar models to last real time measurements of the low energy part of the neutrino spectrum.

  13. Neutrino Physics | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrino Physics Neutrino Physics Experimental neutrino physics is focused on the measurements of mass and other properties of neutrinos that may have profound consequences for understanding the evolution of the universe. Over the last few decades, particle physicists have accumulated experimental evidence on the properties of major constituents of matter, including neutrinos, to explain how neutrinos interact with matter and how these ghostly particles propagate over long distances. We have

  14. Booster Neutrino Experiment - Introduction

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    back The MiniBooNE Experiment next The Oscillating Neutrino Normal matter is made of atoms. Atoms are also composite objects, made up in turn of protons and neutrons (in the nucleus) and the lightweight and familiar electrons. Electrons belong to a class of particles called leptons, the same family to which neutrinos belong. Neutrinos are the very lightweight (originally thought massless) neutral partners of the electrically charged electron and its more exotic cousins the muon and the tau.

  15. Neutrinos: Nature's Ghosts?

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-12

    Dr. Don Lincoln introduces one of the most fascinating inhabitants of the subatomic realm: the neutrino. Neutrinos are ghosts of the microworld, almost not interacting at all. In this video, he describes some of their properties and how they were discovered. Studies of neutrinos are expected to be performed at many laboratories across the world and to form one of the cornerstones of the Fermilab research program for the next decade or more.

  16. Neutrino oscillation studies with reactors

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Vogel, P.; Wen, L.J.; Zhang, C.

    2015-04-27

    Nuclear reactors are one of the most intense, pure, controllable, cost-effective and well-understood sources of neutrinos. Reactors have played a major role in the study of neutrino oscillations, a phenomenon that indicates that neutrinos have mass and that neutrino flavours are quantum mechanical mixtures. Over the past several decades, reactors were used in the discovery of neutrinos, were crucial in solving the solar neutrino puzzle, and allowed the determination of the smallest mixing angle θ13. In the near future, reactors will help to determine the neutrino mass hierarchy and to solve the puzzling issue of sterile neutrinos.

  17. Low Energy Neutrino Oscillations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Low Energy Neutrino Oscillations Žarko Pavlović Los Alamos National Laboratory APS April Meeting, May 1 2011 Standard Model & Neutrino Oscillations ● 3 neutrinos ● Initially assumed massless ● Mixing matrix: ● Oscillation Probability:   e      =  U e1 U e2 U e3 U 1 U 2 U 3 U  1 U  2 U  3    1  2  3  Neutrino Oscillations ● Lot of experimental evidence ● L/E dependence ● Precise measurement of atmospheric and solar

  18. Neutrino-nucleus interactions

    SciTech Connect (OSTI)

    Gallagher, H.; Garvey, G.; Zeller, G.P.; /Fermilab

    2011-01-01

    The study of neutrino oscillations has necessitated a new generation of neutrino experiments that are exploring neutrino-nuclear scattering processes. We focus in particular on charged-current quasi-elastic scattering, a particularly important channel that has been extensively investigated both in the bubble-chamber era and by current experiments. Recent results have led to theoretical reexamination of this process. We review the standard picture of quasi-elastic scattering as developed in electron scattering, review and discuss experimental results, and discuss additional nuclear effects such as exchange currents and short-range correlations that may play a significant role in neutrino-nucleus scattering.

  19. Booster Neutrino Experiment - Introduction

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    close The MiniBooNE Experiment next The Oscillating Neutrino The first phase of the Booster Neutrino Experiment (BooNE) at the Fermi National Accelerator Laboratory is a smaller version of the final planned experiment, and has been dubbed "MiniBooNE." The physicists working on MiniBooNE are trying to find out more about the fundamental properties of neutrinos. But, what exactly is a neutrino? To answer that question, we need to look at what's called the Standard Model of particles and

  20. Microsoft Word - Nuclear_Astrophysics_Summary

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and ATLAS S. Almaraz-Calderon (ANL): Fusion Reactions in Nuclear Astrophysics: The MUSIC Approach P. Collon (Notre Dame): AMS for astrophysics, p-process work and other...

  1. Cosmological neutrino mass detection: The Best probe of neutrino lifetime

    SciTech Connect (OSTI)

    Serpico, Pasquale D.; /Fermilab

    2007-01-01

    Future cosmological data may be sensitive to the effects of a finite sum of neutrino masses even as small as {approx}0.06 eV, the lower limit guaranteed by neutrino oscillation experiments. We show that a cosmological detection of neutrino mass at that level would improve by many orders of magnitude the existing limits on neutrino lifetime, and as a consequence on neutrino secret interactions with (quasi-)massless particles as in majoron models. On the other hand, neutrino decay may provide a way-out to explain a discrepancy {approx}< 0.1 eV between cosmic neutrino bounds and Lab data.

  2. Solar neutrinos: Probing the sun or neutrinos

    SciTech Connect (OSTI)

    Wilkerson, J.F.

    1991-01-01

    The decade of the 1990's should prove to be a landmark period for the study of solar neutrino physics. Current observations show 2-3 times fewer neutrinos coming from the sun than are theoretically expected. As we enter the decade, new experiments are poised to attempt and discover whether this deficit is a problem with our understanding of how the sun works, is a hint of new neutrino properties beyond those predicted by the standard model of particle physics, or perhaps a combination of both. This paper will review the current status of the field and point out how future measurements should help solve this interesting puzzle. 11 refs., 3 figs., 1 tab.

  3. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Booster Neutrino Experiment (BooNE) Goals of BooNE BooNE in a Nutshell Making Neutrinos Detecting Neutrinos

  4. On the Sensitivity of Neutrino Telescopes to a Modified Dispersion Relation

    SciTech Connect (OSTI)

    Bustamante, M.; Gago, A. M.; Bazo, J. L.; Miranda, O. G.

    2008-07-02

    We consider a modified dispersion relation and its effect on the flavour ratios of high-energy neutrinos originated at distant astrophysical sources such as active galactic nuclei. This dispersion relation arise naturally in different new physics (NP) effects such as violation of CPT invariance, of the equivalence principle and of Lorentz invariance. It is a common notion in the literature that by using the flux of high-energy neutrinos expected from distant astrophysical sources, the sensitivity to possible NP effects may be improved beyond the current bounds. However, performing a realistic analysis that takes into account the expected number of events in future neutrino telescopes, we find that the average detected flavour ratios with and without the inclusion of new physics have essentially the same value, making difficult to obtain an improved bound for this type of new physics.

  5. Physics division annual report 2005.

    SciTech Connect (OSTI)

    Glover, J.; Physics

    2007-03-12

    This report highlights the research performed in 2005 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The mission of Nuclear Physics is to understand the origin, evolution and structure of baryonic matter in the universe--the matter that makes up stars, planets and human life itself. The Division's research focuses on innovative new ways to address this mission and 2005 was a year of great progress. One of the most exciting developments is the initiation of the Californium Rare Ion Breeder Upgrade, CARIBU. By combining a Cf-252 fission source, the gas catcher technology developed for rare isotope beams, a high-resolution isobar separator, and charge breeding ECR technology, CARIBU will make hundreds of new neutron-rich isotope beams available for research. The cover illustration shows the anticipated intensities of low-energy beams that become available for low-energy experiments and for injection into ATLAS for reacceleration. CARIBU will be completed in early 2009 and provide us with considerable experience in many of the technologies developed for a future high intensity exotic beam facility. Notable results in research at ATLAS include a measurement of the isomeric states in {sup 252}No that helps pin down the single particle structure expected for superheavy elements, and a new low-background measurement of {sup 16}N beta-decay to determine the {sup 12}C({alpha},{gamma}){sup 16}O reaction rate that is so important in astrophysical environments. Precise mass measurements shed new light on the unitarity of the quark weak-mixing matrix in the search for physics beyond the standard model. ATLAS operated for 4686 hours of research in FY2005 while achieving 95% efficiency of beam delivery for experiments. In Medium-Energy Physics, radium isotopes were

  6. Radiative capture reactions in astrophysics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Brune, Carl R.; Davids, Barry

    2015-08-07

    Here, the radiative capture reactions of greatest importance in nuclear astrophysics are identified and placed in their stellar contexts. Recent experimental efforts to estimate their thermally averaged rates are surveyed.

  7. Physics Division News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    PADSTE » ADEPS » Physics » Physics Division News Physics Division News Discover more about the wide-ranging scope of Physics Division science and technology. Contact Us ADEPS Communications Email Physics Flash An electronic newsletter featuring interviews with Physics Division staff and news of awards and the latest research published in peer-reviewed journals. Physics Flash archive Focus on Physics Focus on Proton Radiography (pdf) High Energy Physics: LBNE, HAWC (pdf) Nuclear Physics:

  8. Multi-year search for a diffuse flxu of muon neutrinos with AMANDA-II

    SciTech Connect (OSTI)

    IceCube Collaboration; Klein, Spencer; Achterberg, A.; Collaboration, IceCube

    2008-04-13

    A search for TeV-PeV muon neutrinos from unresolved sources was performed on AMANDA-II data collected between 2000 and 2003 with an equivalent livetime of 807 days. This diffuse analysis sought to find an extraterrestrial neutrino flux from sources with non-thermal components. The signal is expected to have a harder spectrum than the atmospheric muon and neutrino backgrounds. Since no excess of events was seen in the data over the expected background, an upper limit of E{sup 2}{Phi}{sub 90%C.L.} < 7.4 x 10{sup -8} GeV cm{sup -2} s{sup -1} sr{sup -1} is placed on the diffuse flux of muon neutrinos with a {Phi} {proportional_to} E{sup -2} spectrum in the energy range 16 TeV to 2.5 PeV. This is currently the most sensitive {Phi} {proportional_to} E{sup -2} diffuse astrophysical neutrino limit. We also set upper limits for astrophysical and prompt neutrino models, all of which have spectra different than {Phi} {proportional_to} E{sup -2}.

  9. DETECTING GRAVITY MODES IN THE SOLAR {sup 8} B NEUTRINO FLUX

    SciTech Connect (OSTI)

    Lopes, Ildio; Turck-Chize, Sylvaine E-mail: ilopes@uevora.pt

    2014-09-10

    The detection of gravity modes produced in the solar radiative zone has been a challenge in modern astrophysics for more than 30yr and their amplitude in the core is not yet determined. In this Letter, we develop a new strategy to look for standing gravity modes through solar neutrino fluxes. We note that due to a resonance effect, the gravity modes of low degree and low order have the largest impact on the {sup 8} B neutrino flux. The strongest effect is expected to occur for the dipole mode with radial order 2, corresponding to periods of about 1.5 hr. These standing gravity waves produce temperature fluctuations that are amplified by a factor of 170 in the boron neutrino flux for the corresponding period, in consonance with the gravity modes. From current neutrino observations, we determine that the maximum temperature variation due to the gravity modes in the Sun's core is smaller than 5.8 10{sup 4}. This study clearly shows that due to their high sensitivity to the temperature, the {sup 8} B neutrino flux time series is an excellent tool to determine the properties of gravity modes in the solar core. Moreover, if gravity mode footprints are discovered in the {sup 8} B neutrino flux, this opens a new line of research to probe the physics of the solar core as non-standing gravity waves of higher periods cannot be directly detected by helioseismology but could leave their signature on boron neutrino or on other neutrino fluxes.

  10. Solar neutrinos: Theoretical status

    SciTech Connect (OSTI)

    Haxton, W.C.

    1991-01-01

    I review the standard solar model, the disparities between its predictions an the solar neutrino flux measurements of the Homestake and Kamioka 2 collaborations, and possible particle physics resolutions of this puzzle. The effects of matter, including density fluctuations and turbulence, on solar neutrino oscillations are explained by building analogies with more familiar atomic physics phenomena. These and other mechanisms are considered as possible explanations for time variations in the solar neutrino flux. Finally, I consider possible outcomes and implications of the SAGE/GALLEX gallium experiments.

  11. Neutrinos: Nature's Identity Thieves?

    ScienceCinema (OSTI)

    Dr. Don Lincoln

    2013-07-22

    The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real way, this phenomena is a clear signal of physics beyond the known. In this video, Fermilab's Dr Don Lincoln explains how we know it occurs and hints at the rich experimental program at several international laboratories designed to understand this complex mystery.

  12. Neutrinos: Nature's Identity Thieves?

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-07

    The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real way, this phenomena is a clear signal of physics beyond the known. In this video, Fermilab's Dr Don Lincoln explains how we know it occurs and hints at the rich experimental program at several international laboratories designed to understand this complex mystery.

  13. Implementation of Division D, Titles III and V, and Division...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and guidance for Division D, Titles III and V, and Division E, Title VII of the ... Implementation of Division D, Titles III and V, and Division E, Title VII of the ...

  14. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    BooNE will investigate the question of neutrino mass by searching for oscillations of muon neutrinos into electron neutrinos. This will be done by directing a muon neutrino beam...

  15. Nuclear and particle physics, astrophysics and cosmology (NPAC) capability review

    SciTech Connect (OSTI)

    Redondo, Antonio

    2010-01-01

    The present document represents a summary self-assessment of the status of the Nuclear and Particle Physics, Astrophysics and Cosmology (NPAC) capability across Los Alamos National Laboratory (LANL). For the purpose of this review, we have divided the capability into four theme areas: Nuclear Physics, Particle Physics, Astrophysics and Cosmology, and Applied Physics. For each theme area we have given a general but brief description of the activities under the area, a list of the Laboratory divisions involved in the work, connections to the goals and mission of the Laboratory, a brief description of progress over the last three years, our opinion of the overall status of the theme area, and challenges and issues.

  16. Leptogenesis via neutrino production during Higgs condensate...

    Office of Scientific and Technical Information (OSTI)

    Leptogenesis via neutrino production during Higgs condensate relaxation Title: Leptogenesis via neutrino production during Higgs condensate relaxation Authors: Pearce, Lauren ; ...

  17. Neutrino Data from IceCube and its Predecessor at the South Pole, the Antarctic Muon and Neutrino Detector Array (AMANDA)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Abbasi, R.

    IceCube is a neutrino observatory for astrophysics with parts buried below the surface of the ice at the South Pole and an air-shower detector array exposed above. The international group of sponsors, led by the National Science Foundation (NSF), that designed and implemented the experiment intends for IceCube to operate and provide data for 20 years. IceCube records the interactions produced by astrophysical neutrinos with energies above 100 GeV, observing the Cherenkov radiation from charged particles produced in neutrino interactions. Its goal is to discover the sources of high-energy cosmic rays. These sources may be active galactic nuclei (AGNs) or massive, collapsed stars where black holes have formed.[Taken from http://www.icecube.wisc.edu/] The data from IceCube's predecessor experiment and detector, AMANDA, IceCubes predecessor detector and experiment is also available at this website. AMANDA pioneered neutrino detection in ice. Over a period of years in the 1990s, detecting strings were buried and activated and by 2000, AMANDA was successfully recording an average of 1,000 neutrino events per year. This site also makes available many images and video from the two experiments.

  18. Neutrino Data from IceCube and its Predecessor at the South Pole, the Antarctic Muon and Neutrino Detector Array (AMANDA)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Abbasi, R.

    IceCube is a neutrino observatory for astrophysics with parts buried below the surface of the ice at the South Pole and an air-shower detector array exposed above. The international group of sponsors, led by the National Science Foundation (NSF), that designed and implemented the experiment intends for IceCube to operate and provide data for 20 years. IceCube records the interactions produced by astrophysical neutrinos with energies above 100 GeV, observing the Cherenkov radiation from charged particles produced in neutrino interactions. Its goal is to discover the sources of high-energy cosmic rays. These sources may be active galactic nuclei (AGNs) or massive, collapsed stars where black holes have formed.[Taken from http://www.icecube.wisc.edu/] The data from IceCube's predecessor experiment and detector, AMANDA, IceCube’s predecessor detector and experiment is also available at this website. AMANDA pioneered neutrino detection in ice. Over a period of years in the 1990s, detecting “strings” were buried and activated and by 2000, AMANDA was successfully recording an average of 1,000 neutrino events per year. This site also makes available many images and video from the two experiments.

  19. Cosmological and supernova neutrinos

    SciTech Connect (OSTI)

    Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Balantekin, A. B. [Department of Physics, University of Wisconsin - Madison, Wisconsin 53706 (United States); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Kusakabe, M. [School of Liberal Arts and Science, Korea Aerospace University, Goyang 412-791 (Korea, Republic of); Mathews, G. J. [Department of Physics, University of Notre Dame, IN 46556 (United States); Nakamura, K. [Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Pehlivan, Y. [Mimar Sinan GS, Department of Physics, ?i?li, ?stanbul 34380 (Turkey); Suzuki, T. [Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)

    2014-06-24

    The Big Bang nucleosynthesis (BBN) and the cosmic microwave background (CMB) anisotropies are the pillars of modern cosmology. It has recently been suggested that axion which is a dark matter candidate in the framework of the standard model could condensate in the early universe and induce photon cooling before the epoch of the photon last scattering. Although this may render a solution to the overproduction problem of primordial {sup 7}Li abundance, there arises another serious difficulty of overproducing D abundance. We propose a hybrid dark matter model with both axions and relic supersymmetric (SUSY) particles to solve both overproduction problems of the primordial D and {sup 7}Li abundances simultaneously. The BBN also serves to constrain the nature of neutrinos. Considering non-thermal photons produced in the decay of the heavy sterile neutrinos due to the magnetic moment, we explore the cosmological constraint on the strength of neutrino magnetic moment consistent with the observed light element abundances. Core-collapse supernovae eject huge flux of energetic neutrinos which affect explosive nucleosynthesis of rare isotopes like {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and {sup 180}Ta and r-process elements. Several isotopes depend strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. Combining the recent experimental constraints on ?{sub 13} with predicted and observed supernova-produced abundance ratio {sup 11}B/{sup 7}Li encapsulated in the presolar grains from the Murchison meteorite, we show a marginal preference for an inverted neutrino mass hierarchy. We also discuss supernova relic neutrinos (SRN) that may indicate the softness of the equation of state (EoS) of nuclear matter and adiabatic conditions of the neutrino oscillation.

  20. Core-collapse supernova neutrinos and neutrino properties

    SciTech Connect (OSTI)

    Gava, J.; Volpe, C.

    2008-08-29

    Core-collapse supernovae are powerful neutrino sources. The observation of a future (extra-)galactic supernova explosion or of the relic supernova neutrinos might provide important information on the supernova dynamics, on the supernova formation rate and on neutrino properties. One might learn more about unknown neutrino properties either from indirect effects in the supernova (e.g. on the explosion or on in the r-process) or from modifications of the neutrino time or energy distributions in a detector on Earth. Here we will discuss in particular possible effects of CP violation in the lepton sector. We will also mention the interest of future neutrino-nucleus interaction measurements for the precise knowledge of supernova neutrino detector response to electron neutrinos.

  1. Probing Late Neutrino Mass Properties With SupernovaNeutrinos...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Probing Late Neutrino Mass Properties With SupernovaNeutrinos Citation ... DOE Contract Number: DE-AC02-05CH11231 Resource Type: Journal Article Resource Relation: ...

  2. Fusion reactions in nuclear astrophysics: The MUSIC approach

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reactions in nuclear astrophysics: The MUSIC approach The MUSIC approach Sergio Almaraz-Calderon Sergio Almaraz-Calderon Physics Division Argonne National Laboratory 2014 ATLAS USER'S MEETING 05/15/2014 Carbon burning reactions in the stars Carbon burning in massive stars Ignition phase of Type Ia supernovae X-ray binaries NASA/CXC/PSU/L University of Chicago Flash Center S. Almaraz-Calderon ATLAS user's meeting 05/15/2014 H. Schatz X-Ray Bursts and Superbursts ● H and He burning (rp-process)

  3. Exploring Plasma Science Advances from Fusion Findings to Astrophysical

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Achievements | Princeton Plasma Physics Lab Exploring Plasma Science Advances from Fusion Findings to Astrophysical Achievements By John Greenwald December 4, 2012 Tweet Widget Google Plus One Share on Facebook The latest advances in plasma physics were the focus of more than 1,000 scientists from around the world who gathered in Providence, R.I., from Oct. 29 through Nov. 2 for the 54th Annual Meeting of the American Physical Society's Division of Plasma Physics (APS-DPP). Papers, posters

  4. No-neutrino double beta decay: more than one neutrino

    SciTech Connect (OSTI)

    Rosen, S.P.

    1983-01-01

    Interference effects between light and heavy Majorana neutrinos in the amplitude for no-neutrino double beta decay are discussed. The effects include an upper bound on the heavy neutrino mass, and an A dependence for the effective mass extracted from double beta decay. Thus the search for the no-neutrino decay mode should be pursued in several nuclei, and particularly in Ca/sup 48/, where the effective mass may be quite large.

  5. Nuclear astrophysics and electron beams

    SciTech Connect (OSTI)

    Schwenk, A.

    2013-11-07

    Electron beams provide important probes and constraints for nuclear astrophysics. This is especially exciting at energies within the regime of chiral effective field theory (EFT), which provides a systematic expansion for nuclear forces and electroweak operators based on quantum chromodynamics. This talk discusses some recent highlights and future directions based on chiral EFT, including nuclear structure and reactions for astrophysics, the neutron skin and constraints for the properties of neutron-rich matter in neutron stars and core-collapse supernovae, and the dark matter response of nuclei.

  6. Genomics Division Home

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to the most primitive soil microbe represent a watershed opportunity for biology. The Genomics Division is taking advantage of this wealth of new information. While it is well...

  7. Final Technical Report Division

    Office of Scientific and Technical Information (OSTI)

    Technical Report Division of Nuclear Physics in the Department of Energy DOE Award ... Center for Theoretical Studies in Nuclear Physics and Related Areas (ECT*), Trento, ...

  8. Nuclear Science Division 1994 annual report

    SciTech Connect (OSTI)

    Myers, W.D.

    1995-06-01

    This report describes the activities of the Nuclear Science Division for the period of January 1, 1994, to December 31, 1994. This was a time of significant accomplishment for all of the programs in the Division. Assembly of the solar neutrino detector at the Sudbury Neutrino Observatory is well under way. All of the components fabricated by LBL were shipped to Sudbury early in the year and our efforts are now divided between assisting the assembly of the detector and preparing software for data analysis once the detector is operational in 1996. Much of the activity at the 88-Inch Cyclotron centered on Gammasphere. The {open_quotes}early implementation{close_quotes} phase of the detector ended in September. This phase was extremely successful, involving over 60 experiments with nearly 200 users from 37 institutions worldwide. The mechanical structure was installed and the final electronic system is expected to operate in March 1995. The Division concurrently hosted a conference on physics for large {gamma}-ray detector arrays at the Clark Kerr Campus at UC Berkeley in August. This was a very successful meeting, reflecting the enthusiasm for this field worldwide. Also at the Cyclotron, the progress toward weak interaction experiments using ultra-thin sources passed a major milestone with the trapping of radioactive {sup 21}Na atoms. We are now engaged in a major upgrade of the experimental area and the outlook is very promising for these novel experiments. Another highlight of research at the Cyclotron was the confirmation of element 106. This development allowed the original LLNL/LBL discovery team to move forward with their proposal to name this element seaborgium.

  9. Results from Neutrino Oscillations Experiments

    SciTech Connect (OSTI)

    Aguilar-Arevalo, Alexis

    2010-09-10

    The interpretation of the results of early solar and atmospheric neutrino experiments in terms of neutrino oscillations has been verified by several recent experiments using both, natural and man-made sources. The observations provide compelling evidence in favor of the existence of neutrino masses and mixings. These proceedings give a general description of the results from neutrino oscillation experiments, the current status of the field, and some possible future developments.

  10. Frederick Reines and the Neutrino

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Frederick Reines and the Detection of the Neutrino Resources with Additional Information '[Frederick] Reines - known among scientists as the "father of neutrino physics" - won the Nobel Prize for physics in 1995 ["for the detection of the neutrino"], nearly 40 years after his neutrino experiments changed the world of physics and set in motion a new way of looking at the universe. ... Frederick Reines Courtesy University of California Irvine Until Reines's discovery,

  11. Perspectives on neutrino telescopes 2009

    SciTech Connect (OSTI)

    Quigg, Chris; /Fermilab /Karlsruhe U., TTP

    2009-04-01

    Remarks at the roundtable on plans for the future at the XIII International Workshop on Neutrino Telescopes.

  12. What is a Neutrino Horn?

    Office of Energy Efficiency and Renewable Energy (EERE)

    Find out how scientists at Fermilab scientists study some of the most elusive particles in our universe: neutrinos.

  13. Time Ordered Astrophysics Scalable Tools

    Energy Science and Technology Software Center (OSTI)

    2011-12-14

    This software package provides tools for astrophysical experiments which record data in the form of individual time streams from discrete detectors. TOAST provides tools from meta-data manipulation and job set up, I/O operation, telescope pointing reconstruction, and map-making. It also provides tools for constructing simulated observations.

  14. Engineering Division Superconducting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    & Engineering Division Superconducting Magnet Technology for Fusion and Large Scale Applications Joseph V. Minervini Massachusetts Institute of Technology Plasma Science and Fusion Center Princeton Plasma Physics Laboratory Colloquium Princeton, NJ October 15, 2014 Technology & Engineering Division Contents * Fusion Magnets - Present and Future - Vision - State-of-the-art - New developments in superconductors * Advanced fusion magnet technology * Other large scale applications of

  15. Direct probes of neutrino properties using solar-neutrino lines

    SciTech Connect (OSTI)

    Pakvasa, S.; Pantaleone, J. )

    1990-11-12

    The spectrum of neutrinos from the Sun contains large fluxes of monoenergetic neutrinos which could be observed in the next generation of solar-neutrino detectors. Such observations directly probe neutrino parameters independent of uncertainties in the standard solar model. Small neutrino mass differences, 10{sup {minus}11}{lt}{ital m}{sub 2}{sup 2}{minus}{ital m}{sub 1}{sup 2}{lt}10{sup {minus}8} eV{sup 2}, would cause the measured flux of {sup 7}Be-line neutrinos to oscillate with a period in the range of a week up to a year. A neutrino magnetic moment comparable to the present laboratory bound would produce large distortions in the spectrum of scattered electrons.

  16. Are neutrinos their own antiparticles?

    SciTech Connect (OSTI)

    Kayser, Boris; /Fermilab

    2009-03-01

    We explain the relationship between Majorana neutrinos, which are their own antiparticles, and Majorana neutrino masses. We point out that Majorana masses would make the neutrinos very distinctive particles, and explain why many theorists strongly suspect that neutrinos do have Majorana masses. The promising approach to confirming this suspicion is to seek neutrinoless double beta decay. We introduce a toy model that illustrates why this decay requires nonzero neutrino masses, even when there are both right-handed and left-handed weak currents.

  17. Solar Neutrinos. II. Experimental

    DOE R&D Accomplishments [OSTI]

    Davis, Raymond Jr.

    1964-01-01

    A method is described for observing solar neutrinos from the reaction Cl{sup 37}(nu,e{sup -})Ar{sup 37} in C{sub 2}Cl{sub 4}. Two 5 00-gal tanks of C{sub 2}Cl{sub 4} were placed in a limestone mine (1800 m.w.e.) and the resulting Ar{sup 37} activity induced by cosmic mesons( mu ) was measured to determine the necessary conditions for solar neutrino observations. (R.E.U.)

  18. Testing the big bang: Light elements, neutrinos, dark matter and large-scale structure

    SciTech Connect (OSTI)

    Schramm, D.N. Fermi National Accelerator Lab., Batavia, IL )

    1991-06-01

    In this series of lectures, several experimental and observational tests of the standard cosmological model are examined. In particular, detailed discussion is presented regarding nucleosynthesis, the light element abundances and neutrino counting; the dark matter problems; and the formation of galaxies and large-scale structure. Comments will also be made on the possible implications of the recent solar neutrino experimental results for cosmology. An appendix briefly discusses the 17 keV thing'' and the cosmological and astrophysical constraints on it. 126 refs., 8 figs., 2 tabs.

  19. Physics Division annual report 2004.

    SciTech Connect (OSTI)

    Glover, J.

    2006-04-06

    This report highlights the research performed in 2004 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The intellectual challenges of this research represent some of the most fundamental challenges in modern science, shaping our understanding of both tiny objects at the center of the atom and some of the largest structures in the universe. A great strength of these efforts is the critical interplay of theory and experiment. Notable results in research at ATLAS include a measurement of the charge radius of He-6 in an atom trap and its explanation in ab-initio calculations of nuclear structure. Precise mass measurements on critical waiting point nuclei in the rapid-proton-capture process set the time scale for this important path in nucleosynthesis. An abrupt fall-off was identified in the subbarrier fusion of several heavy-ion systems. ATLAS operated for 5559 hours of research in FY2004 while achieving 96% efficiency of beam delivery for experiments. In Medium Energy Physics, substantial progress was made on a long-term experiment to search for the violation of time-reversal invariance using trapped Ra atoms. New results from HERMES reveal the influence of quark angular momentum. Experiments at JLAB search for evidence of color transparency in rho-meson production and study the EMC effect in helium isotopes. New theoretical results include a Poincare covariant description of baryons as composites of confined quarks and non-point-like diquarks. Green's function Monte Carlo techniques give accurate descriptions of the excited states of light nuclei and these techniques been extended to scattering states for astrophysics studies. A theoretical description of the phenomena of proton radioactivity has been extended to triaxial nuclei. Argonne continues to

  20. Sterile Neutrino Search with MINOS

    SciTech Connect (OSTI)

    Devan, Alena V.

    2015-08-01

    MINOS, Main Injector Neutrino Oscillation Search, is a long-baseline neutrino oscillation experiment in the NuMI muon neutrino beam at the Fermi National Accelerator Laboratory in Batavia, IL. It consists of two detectors, a near detector positioned 1km from the source of the beam and a far detector 734km away in Minnesota. MINOS is primarily designed to observe muon neutrino disappearance resulting from three avor oscillations. The Standard Model of Particle Physics predicts that neutrinos oscillate between three active avors as they propagate through space. This means that a muon type neutrino has a certain probability to later interact as a di erent type of neutrino. In the standard picture, the neutrino oscillation probabilities depend only on three neutrino avors and two mass splittings, Δm2. An anomaly was observed by the LSND and MiniBooNE experiments that suggests the existence of a fourth, sterile neutrino avor that does not interact through any of the known Standard Model interactions. Oscillations into a theoretical sterile avor may be observed by a de cit in neutral current interactions in the MINOS detectors. A distortion in the charged current energy spectrum might also be visible if oscillations into the sterile avor are driven by a large mass-squared di erence, m2s 1 eV2. The results of the 2013 sterile neutrino search are presented here.

  1. Nucleosynthesis Woosley, Stan 79 ASTRONOMY AND ASTROPHYSICS SciDAC...

    Office of Scientific and Technical Information (OSTI)

    SciDAC 2, Computational Astrophysics Consortium, Supernovae, Computations Final project report for UCSC's participation in the Computational Astrophysics Consortium -...

  2. Neutrino Factory Downstream Systems

    SciTech Connect (OSTI)

    Zisman, Michael S.

    2009-12-23

    We describe the Neutrino Factory accelerator systems downstream from the target and capture area. These include the bunching and phase rotation, cooling, acceleration, and decay ring systems. We also briefly discuss the R&D program under way to develop these systems, and indicate areas where help from CERN would be invaluable.

  3. OPAL Opacities for astrophysical applications

    SciTech Connect (OSTI)

    Iglesias, C.A.; Rogers, F.J.

    1991-05-01

    The OPAL opacity code developed at LLNL has been applied to astrophysical problems. The computed Rosseland mean opacities show significant differences when compared to the Los Alamos results. These differences have been traced to both atomic and equation of state improvements in the OPAL code. Furthermore, preliminary work suggest that the OPAL calculations considerably improve the agreement between observations and stellar models. 24 refs., 4 figs.

  4. L61 The Astrophysical Journal,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    L61 The Astrophysical Journal, 672: L61-L64, 2008 January 1 ൴ ᭧ 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A. ON WEAK AND STRONG MAGNETOHYDRODYNAMIC TURBULENCE Jean Carlos Perez and Stanislav Boldyrev Department of Physics, University of Wisconsin at Madison, 1150 University Avenue, Madison, WI 53706; jcperez@wisc.edu, boldyrev@wisc.edu Received 2007 October 4; accepted 2007 November 9; published 2007 December 6 ABSTRACT Recent numerical and observational

  5. Director, Division of Investigations

    Broader source: Energy.gov [DOE]

    The Federal Energy Regulatory Commission is looking for an experienced, highly skilled executive to serve as Director of the Division of Investigations (DOI) in the Office of Enforcement (OE). The...

  6. National Electricity Delivery Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electricity Delivery Division Julie Ann Smith, PhD September 24, 2015 The Federal Indian ... Tradition Thank you Julie Ann Smith, PhD U.S. Department of Energy ...

  7. CHRONOLOGY OF EVENTS IN DIVISION ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CHRONOLOGY OF EVENTS IN DIVISION OF BIOLOGY AND MEDICINE PROGRAMS 1927 1936 December 1944 ... Board of Review which recommended establishment of a Division of Biology and Medicine. ...

  8. Precision Solar Neutrino Measurements with the Sudbury Neutrino Observatory

    SciTech Connect (OSTI)

    Oblath, Noah

    2007-10-26

    The Sudbury Neutrino Observatory (SNO) is the first experiment to measure the total flux of active, high-energy neutrinos from the sun. Results from SNO have solved the long-standing 'Solar Neutrino Problem' by demonstrating that neutrinos change flavor. SNO measured the total neutrino flux with the neutral-current interaction of solar neutrinos with 1000 tonnes of D{sub 2}O. In the first two phases of the experiment we detected the neutron from that interaction by capture on deuterium and capture on chlorine, respectively. In the third phase an array of {sup 3}He proportional counters was deployed in the detector. This allows a measurement of the neutral-current neutrons that is independent of the Cherenkov light detected by the PMT array. We are currently developing a unique, detailed simulation of the current pulses from the proportional-counter array that will be used to help distinguish signal and background pulses.

  9. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Posters What's a Neutrino? How neutrinos fit into our understanding of the universe. Recipe for a Neutrino Beam Start with some protons... concocting the MiniBooNE beam. The...

  10. Energy Neutrinos Ever Lisa Gerhardt, LBNL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    IceCube and the Highest Energy Neutrinos Ever Lisa Gerhardt, LBNL NUG 2014 February 5, 2014 2 Neutrinos Neutrinos are produced locally in Sun, nuclear reactors, and cosmic ray ...

  11. On the Detection of the Free Neutrino

    DOE R&D Accomplishments [OSTI]

    Reines, F.; Cowan, C. L., Jr.

    1953-08-06

    The experiment previously proposed [to Detect the Free Neutrino] has been initiated, with a Hanford pile as a neutrino source. It appears probable that neutrino detection has been accomplished, and confirmatory work is in progress. (K.S.)

  12. Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems

    Office of Scientific and Technical Information (OSTI)

    discrepancy. While at Brookhaven, Ray Davis conducted research and experiments in solar neutrinos at Homestake Gold Mine in South Dakota. This research was funded by the...

  13. Constraining the neutrino magnetic dipole moment from white dwarf pulsations

    SciTech Connect (OSTI)

    Crsico, A.H.; Althaus, L.G.; Garca-Berro, E. E-mail: althaus@fcaglp.unlp.edu.ar E-mail: kepler@if.ufrgs.br

    2014-08-01

    Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models allows us to search for additional sources of cooling due to the emission of axions, neutralinos, or neutrinos with magnetic dipole moment. In this work, we derive an upper bound to the neutrino magnetic dipole moment (?{sub ?}) using an estimate of the rate of period change of the pulsating DB white dwarf star PG 1351+489. We employ state-of-the-art evolutionary and pulsational codes which allow us to perform a detailed asteroseismological period fit based on fully DB white dwarf evolutionary sequences. Plasmon neutrino emission is the dominant cooling mechanism for this class of hot pulsating white dwarfs, and so it is the main contributor to the rate of change of period with time (Pidot) for the DBV class. Thus, the inclusion of an anomalous neutrino emission through a non-vanishing magnetic dipole moment in these sequences notably influences the evolutionary timescales, and also the expected pulsational properties of the DBV stars. By comparing the theoretical Pidot value with the rate of change of period with time of PG 1351+489, we assess the possible existence of additional cooling by neutrinos with magnetic dipole moment. Our models suggest the existence of some additional cooling in this pulsating DB white dwarf, consistent with a non-zero magnetic dipole moment with an upper limit of ?{sub ?}?<10{sup -11}?{sub B}. This bound is somewhat less restrictive than, but still compatible with, other limits inferred from the white dwarf luminosity function or from the color-magnitude diagram of the Globular cluster M5. Further improvements of the measurement of the rate of period change of the dominant pulsation mode of PG 1351+489 will be necessary to confirm our bound.

  14. Solar neutrino experiments: An update

    SciTech Connect (OSTI)

    Hahn, R.L.

    1993-12-31

    The situation in solar neutrino physics has changed drastically in the past few years, so that now there are four neutrino experiments in operation, using different methods to look at different regions of the solar neutrino energy spectrum. These experiments are the radiochemical {sup 37}Cl Homestake detector, the realtime Kamiokande detector, and the different forms of radiochemical {sup 71}Ga detectors used in the GALLEX and SAGE projects. It is noteworthy that all of these experiments report a deficit of observed neutrinos relative to the predictions of standard solar models (although in the case of the gallium detectors, the statistical errors are still relatively large). This paper reviews the basic principles of operation of these neutrino detectors, reports their latest results and discusses some theoretical interpretations. The progress of three realtime neutrino detectors that are currently under construction, SuperKamiok, SNO and Borexino, is also discussed.

  15. Solar and supernova neutrino interactions

    SciTech Connect (OSTI)

    Haxton, W.C.

    1990-11-01

    Two topics are addressed, the interactions of neutrinos during a type II supernova and the effect of current eddies on solar neutrino oscillations. The supernova discussion focuses on the nucleosynthesis that accompanies inelastic neutral current interactions of neutrinos in the mantle of a collapsing star, and on the effect of neutrino down-scattering'' and preheating on the explosion mechanism. The second half of the talk deals with the influence of solar turbulence (or density fluctuations) on the neutrino effective mass and the possibility that a time-varying neutrino flux could result. The effects of harmonic density or three-current perturbations on the oscillation probability are explored analytically and numerically. 15 refs., 5 figs.

  16. Solar neutrinos: theory vs experiment

    SciTech Connect (OSTI)

    Haxton, W.C.

    1991-01-01

    I review the standard solar model, the disparities between its predictions and the solar neutrino flux measurements of the Homestake and Kamioka II collaborations, and possible particle physics resolutions of this puzzle. The effects of matter, including density fluctuations and turbulence, on solar neutrino oscillations are reviewed, including possibilities for generating time variations in the solar neutrino flux. Finally, I consider possible outcomes and implications of the SAGE/GALLEX gallium experiments.

  17. Fermilab | Science | Particle Physics | Neutrinos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrinos photo Our universe is permeated with neutrinos - nearly massless, neutral particles that interact so rarely with other matter that trillions of them pass through our bodies each second without leaving a trace. These tiny particles, studied in world-leading Fermilab experiments, could be key to a deeper understanding of our universe. Neutrinos, first discovered in 1956, have some mysterious characteristics. They have puzzlingly low masses, compared to other elementary particles, and

  18. Muon Colliders and Neutrino Factories

    SciTech Connect (OSTI)

    Geer, Steve; /Fermilab

    2009-11-01

    Over the past decade, there has been significant progress in developing the concepts and technologies needed to produce, capture, and accelerate {Omicron}(10{sup 21}) muons per year. These developments have paved the way for a new type of neutrino source (neutrino factory) and a new type of very high energy lepton-antilepton collider (muon collider). This article reviews the motivation, design, and research and development for future neutrino factories and muon colliders.

  19. Muon colliders and neutrino factories

    SciTech Connect (OSTI)

    Geer, S.; /Fermilab

    2010-09-01

    Over the last decade there has been significant progress in developing the concepts and technologies needed to produce, capture and accelerate {Omicron}(10{sup 21}) muons/year. This development prepares the way for a new type of neutrino source (Neutrino Factory) and a new type of very high energy lepton-antilepton collider (Muon Collider). This article reviews the motivation, design and R&D for Neutrino Factories and Muon Colliders.

  20. Cosmic Neutrinos Scott Dodelson Fermilab/UChicago

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    matter particles with the smallest mass, neutrinos, are also the most abundant in the Universe. Large cosmic surveys can not only detect these neutrinos, produced when the Universe...

  1. Leptogenesis via neutrino production during Higgs condensate...

    Office of Scientific and Technical Information (OSTI)

    Leptogenesis via neutrino production during Higgs condensate relaxation Citation Details In-Document Search Title: Leptogenesis via neutrino production during Higgs condensate ...

  2. Neutrino CCQE Data Release Page

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrino CCQE Data Release Page "Measurement of Muon Neutrino Quasi-Elastic Scattering on a Hydrocarbon Target at Ev ~ 3.5 GeV" Phys. Rev. Lett. 111 (2013) 022502, hep-ex/1305.2243 Data Ancillary data files for this result are given here, and supercede the ones originally associated with the arXiv entry: they have been updated with MINERvA's best estimate of the NuMI neutrino flux. The available data files have the following format: The columns are Q2 bins, first the 8 neutrino and

  3. The neutrino yesterday and today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The neutrino yesterday and today The neutrino yesterday and today WHEN: Aug 18, 2016 5:30 PM - 7:00 PM WHERE: UnQuarked Wine Room 145 Central Park Square, Los Alamos, NM 87544, USA CONTACT: Linda Anderman (505) 665-9196 CATEGORY: Bradbury INTERNAL: Calendar Login Event Description The event is open to those of all ages! The neutrino yesterday and today Keith Rielage, a neutrino physicist with the Lab's Neutron Science & Technology group, will share a brief tale of the discovery and study of

  4. Supernova neutrinos and explosive nucleosynthesis

    SciTech Connect (OSTI)

    Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J.; Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Mathews, G. J. [Center for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Nakamura, K. [Faculty of Science and Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Suzuki, T. [Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)

    2014-05-09

    Core-collapse supernovae eject huge amount of flux of energetic neutrinos. We studied the explosive nucleosyn-thesis in supernovae and found that several isotopes {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and {sup 180}Ta as well as r-process nuclei are affected by the neutrino interactions. The abundance of these isotopes therefore depends strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. We discuss first how to determine the neutrino temperatures in order to explain the observed solar system abundances of these isotopes, combined with Galactic chemical evolution of the light nuclei and the heavy r-process elements. We then study the effects of neutrino oscillation on their abundances, and propose a novel method to determine the still unknown neutrino oscillation parameters, mass hierarchy and ?{sub 13}, simultaneously. There is recent evidence that SiC X grains from the Murchison meteorite may contain supernova-produced light elements {sup 11}B and {sup 7}Li encapsulated in the presolar grains. Combining the recent experimental constraints on ?{sub 13}, we show that our method sug-gests at a marginal preference for an inverted neutrino mass hierarchy. Finally, we discuss supernova relic neutrinos that may indicate the softness of the equation of state (EoS) of nuclear matter as well as adiabatic conditions of the neutrino oscillation.

  5. zeller-neutrino08.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrino 08 1 Low Energy ν Cross Sections Sam Zeller LANL Neutrino 08 May 28, 2008 * review of experimental programs at K2K, MiniBooNE, SciBooNE, and MINERνA Sam Zeller, Neutrino 08 2 Neutrino Cross Sections * over the past ~5 years, renewed interest in low energy ν cross sections for two reasons: * advent of new high intensity ν sources has brought with it a host of new ν cross section measurement opportunities - taking a giant leap forward (both in terms of precision & sample sizes) -

  6. Frederick Reines and the Neutrino

    Office of Scientific and Technical Information (OSTI)

    of California Irvine Until Reines's discovery, physicists had only theorized the existence of the neutrino - and physicists believed the tiny particles would never be...

  7. Neutrino Physics AAPT Strand Day

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Physics AAPT Strand Day NSTA Regional, 2005 Jocelyn Monroe, Columbia University 1. What Is a Neutrino Anyway? 2. The Question Of Neutrino Mass 3. Searching For Neutrino Oscillations 4. Where Are We Now? ν Neutrinos, they are very small. They have no charge and have no mass And do not interact at all. The earth is just a silly ball To them, through which they simply pass... ...And pierce the lover and his lass From underneath the bed- you call It wonderful; I call it crass. J from ``Cosmic

  8. Experimental Neutrino Physics

    ScienceCinema (OSTI)

    Walter, Chris [Duke University, Durham, North Carolina, United States

    2010-01-08

    In this talk, I will review how a set of experiments in the last decade has given us our current understanding of neutrino properties.  I will show how experiments in the last year or two have clarified this picture, and will discuss how new experiments about to start will address remaining questions.  I will particularly emphasize the relationship between various experimental techniques.

  9. Plasma astrophysics | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    astrophysics Subscribe to RSS - Plasma astrophysics A field of physics that is growing in interest worldwide that tackles such astrophysical phenomena as the source of violent space weather and the formation of stars. Stewart Prager Stewart Prager is the sixth director of PPPL. He joined the Laboratory in 2009 after a long career at the University of Wisconsin in Madison. At Wisconsin, he led research on the "Madison Symmetric Torus" (MST) experiment and headed a center that studied

  10. Nuclear and Particle Physics, Astrophysics, and Cosmology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nuclear and Particle Physics, Astrophysics, and Cosmology Providing scientific and technical leadership in fundamental and applied theoretical research on nuclear, particle, ...

  11. Dark matter annihilation or unresolved astrophysical sources...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Dark matter annihilation or unresolved ... cosmic gamma-ray background (CGB) is a longstanding mystery in high-energy astrophysics. ...

  12. Measurement of neutrino flux from neutrino-electron elastic scattering

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Park, J.; Aliaga, L.; Altinok, O.; Bellantoni, L.; Bercellie, A.; Betancourt, M.; Bodek, A.; Bravar, A.; Budd, H.; Cai, T.; et al

    2016-06-10

    In muon-neutrino elastic scattering on electrons is an observable neutrino process whose cross section is precisely known. Consequently a measurement of this process in an accelerator-based νμ beam can improve the knowledge of the absolute neutrino flux impinging upon the detector; typically this knowledge is limited to ~10% due to uncertainties in hadron production and focusing. We also isolated a sample of 135±17 neutrino-electron elastic scattering candidates in the segmented scintillator detector of MINERvA, after subtracting backgrounds and correcting for efficiency. We show how this sample can be used to reduce the total uncertainty on the NuMI νμ flux frommore » 9% to 6%. Finally, our measurement provides a flux constraint that is useful to other experiments using the NuMI beam, and this technique is applicable to future neutrino beams operating at multi-GeV energies.« less

  13. Solid State Division

    SciTech Connect (OSTI)

    Green, P.H.; Watson, D.M.

    1989-08-01

    This report contains brief discussions on work done in the Solid State Division of Oak Ridge National Laboratory. The topics covered are: Theoretical Solid State Physics; Neutron scattering; Physical properties of materials; The synthesis and characterization of materials; Ion beam and laser processing; and Structure of solids and surfaces. (LSP)

  14. Low Mach Number Models in Computational Astrophysics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ann Almgren Low Mach Number Models in Computational Astrophysics February 4, 2014 Ann Almgren. Berkeley Lab Downloads Almgren-nug2014.pdf | Adobe Acrobat PDF file Low Mach Number Models in Computational Astrophysics - Ann Almgren, Berkeley Lab Last edited: 2016-04-29 11:34:50

  15. Prospects for Relic Neutrino Detection at PTOLEMY: Princeton...

    Office of Environmental Management (EM)

    Prospects for Relic Neutrino Detection at PTOLEMY: Princeton Tritium Observatory for Light, Early-Universe, Massive-Neutrino Yield Prospects for Relic Neutrino Detection at...

  16. Sterile Neutrinos in Cold Climates

    SciTech Connect (OSTI)

    Jones, Benjamin J.P.

    2015-09-01

    Measurements of neutrino oscillations at short baselines contain an intriguing set of experimental anomalies that may be suggestive of new physics such as the existence of sterile neutrinos. This three-part thesis presents research directed towards understanding these anomalies and searching for sterile neutrino oscillations. Part I contains a theoretical discussion of neutrino coherence properties. The open-quantum-system picture of neutrino beams, which allows a rigorous prediction of coherence distances for accelerator neutrinos, is presented. Validity of the standard treatment of active and sterile neutrino oscillations at short baselines is verified, and non-standard coherence loss effects at longer baselines are predicted. Part II concerns liquid argon detector development for the MicroBooNE experiment, which will search for short-baseline oscillations in the Booster Neutrino Beam at Fermilab. Topics include characterization and installation of the MicroBooNE optical system; test-stand measurements of liquid argon optical properties with dissolved impurities; optimization of wavelength-shifting coatings for liquid argon scintillation light detection; testing and deployment of high-voltage surge arrestors to protect TPC field cages; and software development for optical and TPC simulation and reconstruction. Part III presents a search for sterile neutrinos using the IceCube neutrino telescope, which has collected a large sample of atmospheric-neutrino-induced events in the 1-10 TeV energy range. Sterile neutrinos would modify the detected neutrino flux shape via MSW-resonant oscillations. Following a careful treatment of systematic uncertainties in the sample, no evidence for MSW-resonant oscillations is observed, and exclusion limits on 3+1 model parameter space are derived. Under the mixing assumptions made, the 90% confidence level exclusion limit extends to sin224 ≤ 0.02 at m2 ~ 0.3 eV2, and the LSND and Mini

  17. Analyzing Atmospheric Neutrino Oscillations

    SciTech Connect (OSTI)

    Escamilla, J.; Ernst, D. J.; Latimer, D. C.

    2007-10-26

    We provide a pedagogic derivation of the formula needed to analyze atmospheric data and then derive, for the subset of the data that are fully-contained events, an analysis tool that is quantitative and numerically efficient. Results for the full set of neutrino oscillation data are then presented. We find the following preliminary results: 1.) the sub-dominant approximation provides reasonable values for the best fit parameters for {delta}{sub 32}, {theta}{sub 23}, and {theta}{sub 13} but does not quantitatively provide the errors for these three parameters; 2.) the size of the MSW effect is suppressed in the sub-dominant approximation; 3.) the MSW effect reduces somewhat the extracted error for {delta}{sub 32}, more so for {theta}{sub 23} and {theta}{sub 13}; 4.) atmospheric data alone constrains the allowed values of {theta}{sub 13} only in the sub-dominant approximation, the full three neutrino calculations requires CHOOZ to get a clean constraint; 5.) the linear in {theta}{sub 13} terms are not negligible; and 6.) the minimum value of {theta}{sub 13} is found to be negative, but at a statistically insignificant level.

  18. Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Abazajian, K. N.; Arnold, K.; Austermann, J.; Benson, B. A.; Bischoff, C.; Bock, J.; Bond, J. R.; Borrill, J.; Calabrese, E.; Carlstrom, J. E.; et al

    2014-03-15

    This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in detail via its influence on distance-redshift relations and the growth of structure. The program for the next decade described in this document, including upcoming spectroscopic galaxy surveys eBOSS and DESI and a new Stage-IV CMB polarization experiment CMB-S4, will achieve σ (σmv) = 16 meV and σ (Neff)(Neff) = 0.020.more » Such a mass measurement will produce a high significance detection of non-zero σmνσmν, whose lower bound derived from atmospheric and solar neutrino oscillation data is about 58 meV. If neutrinos have a minimal normal mass hierarchy, this measurement will definitively rule out the inverted neutrino mass hierarchy, shedding light on one of the most puzzling aspects of the Standard Model of particle physics — the origin of mass. This precise a measurement of Neff will allow for high sensitivity to any light and dark degrees of freedom produced in the big bang and a precision test of the standard cosmological model prediction that Neff = 3.046.« less

  19. Neutrino physics from the cosmic microwave background and large scale structure

    SciTech Connect (OSTI)

    Abazajian, K. N.; Arnold, K.; Austermann, J. E.; Benson, B. A.; Bischoff, C.; Brock, J.; Bond, J. R.; Borrill, J.; Calabrese, E.; Carlstrom, J. E.; Chang, C. L.

    2015-03-15

    This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in detail via its influence on distance-redshift relations and the growth of structure. The program for the next decade described in this document, including upcoming spectroscopic galaxy surveys eBOSS and DESI and a new Stage-IV CMB polarization experiment CMB-S4, will achieve σ (σmν)(σmν) = 16 meV and σ (Neff)(Neff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero σmνσmν, whose lower bound derived from atmospheric and solar neutrino oscillation data is about 58 meV. If neutrinos have a minimal normal mass hierarchy, this measurement will definitively rule out the inverted neutrino mass hierarchy, shedding light on one of the most puzzling aspects of the Standard Model of particle physics — the origin of mass. This precise a measurement of NeffNeff will allow for high sensitivity to any light and dark degrees of freedom produced in the big bang and a precision test of the standard cosmological model prediction that View the MathML sourceNeff=3.046.

  20. Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure

    SciTech Connect (OSTI)

    Abazajian, K. N.; Arnold, K.; Austermann, J.; Benson, B. A.; Bischoff, C.; Bock, J.; Bond, J. R.; Borrill, J.; Calabrese, E.; Carlstrom, J. E.; Carvalho, C. S.; Chang, C. L.; Chiang, H. C.; Church, S.; Cooray, A.; Crawford, T. M.; Dawson, K. S.; Das, S.; Devlin, M. J.; Dobbs, M.; Dodelson, S.; Dore, O.; Dunkley, J.; Errard, J.; Fraisse, A.; Gallicchio, J.; Halverson, N. W.; Hanany, S.; Hildebrandt, S. R.; Hincks, A.; Hlozek, R.; Holder, G.; Holzapfel, W. L.; Honscheid, K.; Hu, W.; Hubmayr, J.; Irwin, K.; Jones, W. C.; Kamionkowski, M.; Keating, B.; Keisler, R.; Knox, L.; Komatsu, E.; Kovac, J.; Kuo, C. -L.; Lawrence, C.; Lee, A. T.; Leitch, E.; Linder, E.; Lubin, P.; McMahon, J.; Miller, A.; Newburgh, L.; Niemack, M. D.; Nguyen, H.; Nguyen, H. T.; Page, L.; Pryke, C.; Reichardt, C. L.; Ruhl, J. E.; Sehgal, N.; Seljak, U.; Sievers, J.; Silverstein, E.; Slosar, A.; Smith, K. M.; Spergel, D.; Staggs, S. T.; Stark, A.; Stompor, R.; Wang, G.; Watson, S.; Wollack, E. J.; Wu, W. L.K.; Yoon, K. W.; Zahn, O.

    2014-03-15

    This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in detail via its influence on distance-redshift relations and the growth of structure. The program for the next decade described in this document, including upcoming spectroscopic galaxy surveys eBOSS and DESI and a new Stage-IV CMB polarization experiment CMB-S4, will achieve ? (?mv) = 16 meV and ? (Neff)(Neff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero ?m??m?, whose lower bound derived from atmospheric and solar neutrino oscillation data is about 58 meV. If neutrinos have a minimal normal mass hierarchy, this measurement will definitively rule out the inverted neutrino mass hierarchy, shedding light on one of the most puzzling aspects of the Standard Model of particle physics the origin of mass. This precise a measurement of Neff will allow for high sensitivity to any light and dark degrees of freedom produced in the big bang and a precision test of the standard cosmological model prediction that Neff = 3.046.

  1. Division Student Liaisons

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Student Liaisons 2015 OFFICE Division Student Liaison Work # Email MailStop DIRECTOR'S OFFICE Principal Associate Directors PADSTE, PADWP, PADGS, PADOPS, PADCAP Associate Directors ADCLES, ADE, ADEPS, ADTSC --- PADSTE ADPSM, ADW, ADX --- PADWP ADTIR ---PADGS ADBI, ADESH, ADNHHO, ADSS --- PADOPS ADEP, ADPM --- PADCAP Audits & Ethics (EA-DO) Tonie V. Baros 665-3104 barost@lanl.gov A249 Chief Prime Contracts (PCM-DO) None Comm. & Public. Affairs (CGA-DO) CPA-CAS: Comm. Arts & Services

  2. Divisions & Departments | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Divisions & Departments Accelerator Operations, Research and Development Accelerator Home Accelerator Operations Department CASA (Center for Advanced Studies of Accelerators) Division Administrative Office Institute for SRF Science and Technology Low Energy Recirculator Facility Chief Operating Officer Chief Operating Officer Home Administrative Manual Employment Engineering Division Facilities Management Human Resources JLab Registration/International Services Legal Counsel Property Public

  3. Neutrino Physics with Thermal Detectors

    SciTech Connect (OSTI)

    Nucciotti, A. [Dipartimento di Fisica, Universita di Milano Bicocca and INFN Sezione di Milano-Bicocca Piazza della Scienza, 3, 20126 Milano (Italy)

    2009-11-09

    The investigation of fundamental neutrino properties like its mass and its nature calls for the design of a new generation of experiments. High sensitivity, high energy resolution, and versatility together with the possibility of a simple multiplexing scheme are the key features of future detectors for these experiments. Thermal detectors can combine all these features. This paper reviews the status and the perspectives for what concerns the application of this type of detectors to neutrino physics, focusing on direct neutrino mass measurements and neutrinoless double beta decay searches.

  4. New human resources division leader selected

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New Human Resources division leader selected New human resources division leader selected Donna J. Hampton has been named the new Human Resources Division leader. March 15, 2011 ...

  5. Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems

    Office of Scientific and Technical Information (OSTI)

    Davis is also a recipient of the 2003 Fermi Award. He was the first scientist to detect solar neutrinos, ghostlike particles produced in the nuclear reactions that power the sun. ...

  6. Studying Nuclear Astrophysics at NIF

    SciTech Connect (OSTI)

    Boyd, R; Bernstein, L; Brune, C

    2009-07-01

    The National Ignition Facility's primary goal is to generate fusion energy. But the starlike conditions that it creates will also enable NIF scientists to study astrophysically important nuclear reactions. When scientists at the stadium-sized National Ignition Facility attempt to initiate fusion next year, 192 powerful lasers will direct 1.2 MJ of light energy toward a two-mm-diameter pellet of deuterium ({sup 2}H, or D) and tritium ({sup 3}H, or T). Some of that material will be gaseous, but most will be in a frozen shell. The idea is to initiate 'inertial confinement fusion', in which the two hydrogen isotopes fuse to produce helium-4, a neutron, and 17.6 MeV of energy. The light energy will be delivered to the inside walls of a hohlraum, a heavy-metal, centimeter-sized cylinder that houses the pellet. The container's heated walls will produce x rays that impinge on the pellet and ablate its outer surface. The exiting particles push inward on the pellet and compresses the DT fuel. Ultimately a hot spot develops at the pellet's center, where fusion produces {sup 4}He nuclei that have sufficient energy to propagate outward, trigger successive reactions, and finally react the frozen shell. Ignition should last several tens of picoseconds and generate more than 10 MJ of energy and roughly 10{sup 19} neutrons. The temperature will exceed 10{sup 8} K and fuel will be compressed to a density of several hundred g/cm{sup 3}, both considerably greater than at the center of the Sun. The figure shows a cutaway view of NIF. The extreme conditions that will be produced there simulate those in nuclear weapons and inside stars. For that reason, the facility is an important part of the US stockpile stewardship program, designed to assess the nation's aging nuclear stockpile without doing nuclear tests. In this Quick Study we consider a third application of NIF - using the extraordinary conditions it will produce to perform experiments in basic science. We will focus on

  7. Research in Neutrino Physics

    SciTech Connect (OSTI)

    Busenitz, Jerome

    2014-09-30

    Research in Neutrino Physics We describe here the recent activities of our two groups over the first year of this award (effectively November 2010 through January 2012) and our proposed activities and associated budgets for the coming grant year. Both of our groups are collaborating on the Double Chooz reactor neutrino experiment and are playing major roles in calibration and analysis. A major milestone was reached recently: the collaboration obtained the first result on the search for 13 based on 100 days of data from the far detector. Our data indicates that 13 is not zero; specifically the best fit of the neutrino oscillation hypothesis to our data gives sin2 (2 13) = 0.086 ± 0.041 (stat) ± 0.030 (syst) The null oscillation hypothesis is excluded at the 94.6% C.L. This result1 has been submitted to Physical Review Letters. As we continue to take data with the far detector in the coming year, in parallel with completing the construction of the near lab and installing the near detector, we expect the precision of our measurement to improve as we gather significantly more statistics, gain better control of backgrounds through use of partial power data and improved event selection, and better understand the detector energy scale and detection efficiency from calibration data. With both detectors taking data starting in the second half of 2013, we expect to further drive down the uncertainty on our measurement of sin2 (2 13) to less than 0.02. Stancu’s group is also collaborating on the MiniBooNE experiment. Data taking is scheduled to continue through April, by which time 1.18 × 1021 POT is projected. The UA group is playing a leading role in the measurement of antineutrino cross sections, which should be the subject of a publication later this year as well as of Ranjan Dharmapalan’s Ph.D. thesis, which he is expected to defend by the end of this year. It is time to begin working on projects which will eventually succeed Double Chooz and MiniBooNE as the main

  8. Two LANL laboratory astrophysics experiments

    SciTech Connect (OSTI)

    Intrator, Thomas P.

    2014-01-24

    Two laboratory experiments are described that have been built at Los Alamos (LANL) to gain access to a wide range of fundamental plasma physics issues germane to astro, space, and fusion plasmas. The overarching theme is magnetized plasma dynamics which includes significant currents, MHD forces and instabilities, magnetic field creation and annihilation, sheared flows and shocks. The Relaxation Scaling Experiment (RSX) creates current sheets and flux ropes that exhibit fully 3D dynamics, and can kink, bounce, merge and reconnect, shred, and reform in complicated ways. Recent movies from a large data set describe the 3D magnetic structure of a driven and dissipative single flux rope that spontaneously self-saturates a kink instability. Examples of a coherent shear flow dynamo driven by colliding flux ropes will also be shown. The Magnetized Shock Experiment (MSX) uses Field reversed configuration (FRC) experimental hardware that forms and ejects FRCs at 150km/sec. This is sufficient to drive a collision less magnetized shock when stagnated into a mirror stopping field region with Alfven Mach number MA=3 so that super critical shocks can be studied. We are building a plasmoid accelerator to drive Mach numbers MA >> 3 to access solar wind and more exotic astrophysical regimes. Unique features of this experiment include access to parallel, oblique and perpendicular shocks, shock region much larger than ion gyro radii and ion inertial length, room for turbulence, and large magnetic and fluid Reynolds numbers.

  9. The Fermilab neutrino beam program

    SciTech Connect (OSTI)

    Rameika, Regina A.; /Fermilab

    2007-01-01

    This talk presents an overview of the Fermilab Neutrino Beam Program. Results from completed experiments as well as the status and outlook for current experiments is given. Emphasis is given to current activities towards planning for a future program.

  10. Physics division annual report 1999

    SciTech Connect (OSTI)

    Thayer, K., ed.; Physics

    2000-12-06

    ground-breaking research with Garnmasphere was the first study of the limits of stability with angular momentum in the shell stabilized nobelium isotopes. It was found that these heaviest nuclei could be formed at surprisingly high angular momentum, providing important new insight into the production mechanisms for super-heavy elements. Another focus continues to be experiments with short-lived beams for critical nuclear astrophysics applications. Measurements revealed that {sup 44}Ti is more readily destroyed in supernovae than was expected. Major progress was made in collecting and storing unstable ions in the Canadian Penning Trap. The technique of stopping and rapidly extracting ions from a helium gas cell led directly to the new paradigm in the production of rare isotope beams that became RIA. ATLAS provided a record 6046 hours of beam use for experiments in FY99. The facility pressed hard to support the heavy demands of the GammaSphere Research program but maintained an operational reliability of 93%. Of the 29 different isotopes provided as beams in FY99, radioactive beams of {sup 44}Ti and {sup 17}F comprised 6% of the beam time. The theoretical efforts in the Division made dramatic new strides in such topics as quantum Monte Carlo calculations of light nuclei to understand microscopic many-body forces in nuclei; QCD calculations based on the Dyson-Schwinger approach which were extended to baryon systems and finite temperatures and densities; the structure of heavy nuclei; and proton decay modes of nuclei far from stability. The medium-energy program continues to focus on new techniques to understand how the quark-gluon structure of matter impacts the structure of nuclei. The HERMES experiment began making measurements of the fraction of the spin of the nucleon carried by the glue. Drell-Yan experiments study the flavor composition of the sea of the proton. Experiments at Jefferson lab search for clues of QCD dynamics at the hadronic level. A major advance in

  11. Argonne Physics Division - ATLAS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Experiment Safety Considerations at ATLAS For onsite emergencies, call 911 on the internal phones (or 252-1911 on cell phones) Equipment Safety Reviews are required whenever new equipment is brought in for an experiment. The review is conducted by the Physics Division safety committee. If you plan to bring in your own detectors or other equipment for an experiment, it will need to reviewed. If a safety review is required for your equipment, you will need to fill out a Hazard Analysis form. Forms

  12. Final Technical Report Division

    Office of Scientific and Technical Information (OSTI)

    Report Division of Nuclear Physics in the Department of Energy DOE Award# DE-FG02-05ER64101 Title: Heavy Quarks, QCD, and Effective Field Theory Authors: Thomas Mehen (PI) Project Period: June 15, 2005 - June 14, 2010 Susan Lasley, Assistant Director, Office of Research Support, Box 90077,Duke University, Durham NC 27708. 1 I. INTRODUCTION The research supported by this OJI award is in the area of heavy quark and quarko- nium production, especially the application Soft-Collinear Effective Theory

  13. Environmental Protection Division (ENV)

    National Nuclear Security Administration (NNSA)

    e~Alamos NATIONAL LABORATORY - - l :il . l! IIJ - - Environmental Protection Division (ENV) Environmental Stewardship (ENV-ES) P.O. Box 1663, Mail Stop J978 Los Alamos, New Mexico 87545 (505) 665-8855/FAX: (505) 667-0731 Mr. George Rael Assistant Manager for Enviromnental Operations National Nuclear Security Administration Los Alamos Site Office, MS A316 Date : October 28, 2010 Refer To: ENV-ES: 10-211 SUBJECT: 2008 SITE-WIDE ENVIRONMENTAL IMP ACT STATEMENT MITIGATION ACTION PLAN ANNUAL REPORT

  14. Guidance Systems Division ,

    Office of Legacy Management (LM)

    Oockec No. 10-0772 22 OCT 1981 Bcndlx CorporaLion ' Guidance Systems Division , ATTN: Mr. Wf 11 la,,, Hnrr,,or Manngar, PlanL Englne0rtny Teterboro, New Jersey 07608 uwm STATES NUCLEAll I-IEOULATOIJY COMMISSION REGION i 631 PARK A"LH"I KIN0 OF PR"ISIA. PCNNIVLVANIA ID40' Gentlemen: Subject: Inspectfon 81-15 _ "-- .,; .z .;; Thts refers to the closeout safety \nspectlon conducted by Ms. M. Campbell of this office on August 27, 1961, of activities formerly authorized by NRC

  15. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Flux The MiniBooNE neutrino flux calculations are described in detail in PRD 79, 072002 (2009) and arXiv:0806.1449 General neutrino fluxes vs true neutrino energy, for MiniBooNE: image:muon neutrino flux image:electron neutrino flux image:final muon and electron neutrino fluxes π+ production Data sets: M.G. Catanesi et al. [HARP Collaboration], ``Measurement of the production cross-section of positive pions in the collision of 8.9-GeV/c protons on beryllium,'', arXiv:hep-ex/0702024 E910

  16. Plasma Astrophysics | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Plasma Astrophysics One of the most common but least understood phenomena in the universe is an explosive process called magnetic reconnection. PPPL's Magnetic Reconnection Experiment (MRX) studies this process, which gives rise to astrophysical events that include auroras, solar flares and geomagnetic storms. The process occurs when the magnetic field lines in plasmas break and violently reconnect. Generating and studying reconnection under controlled laboratory conditions can yield insights

  17. Nuclear and Particle Physics, Astrophysics, and Cosmology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | (NNSA) Weapons Testing Resumes Nuclear Weapons Testing Resumes Washington, DC The Soviet Union breaks the nuclear test moratorium and the United States resumes testing

    2 Nuclear and Particle Physics, Astrophysics, and Cosmology Providing scientific and technical leadership in fundamental and applied theoretical research on nuclear, particle, astrophysics, and cosmology theory and simulations Leadership Group Leader Joe Carlson Email Deputy Group Leader Gerry Hale Email Contact Us

  18. Cosmology & Astrophysics | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cosmology & Astrophysics Cosmology & Astrophysics For centuries, scientists have tried to fully describe the formation and evolution of our universe, as well as its composition. At Argonne, scientists study the cosmic background radiation that formed as a result of the big bang as well as the mysterious dark matter and dark energy which combine to form more than 90 percent of our universe. Cosmology, the study of the origins and working of our universe, not only gives us answers that

  19. Procurement Division Introduction | Princeton Plasma Physics...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Organization Business Operations Procurement Division Procurement Division Introduction Travel and Conference Services Careers Human Resources Directory Environment,...

  20. Procurement Division | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Procurement Division Introduction Travel and Conference Services Careers Human Resources ... Procurement Division Introduction Travel and Conference Services Careers Human Resources ...

  1. Atmospheric Neutrinos in the MINOS Far Detector

    SciTech Connect (OSTI)

    Howcroft, Caius L.F.

    2004-12-01

    The phenomenon of flavour oscillations of neutrinos created in the atmosphere was first reported by the Super-Kamiokande collaboration in 1998 and since then has been confirmed by Soudan 2 and MACRO. The MINOS Far Detector is the first magnetized neutrino detector able to study atmospheric neutrino oscillations. Although it was designed to detect neutrinos from the NuMI beam, it provides a unique opportunity to measure the oscillation parameters for neutrinos and anti-neutrinos independently. The MINOS Far Detector was completed in August 2003 and since then has collected 2.52 kton-years of atmospheric data. Atmospheric neutrino interactions contained within the volume of the detector are separated from the dominant background from cosmic ray muons. Thirty seven events are selected with an estimated background contamination of less than 10%. Using the detector's magnetic field, 17 neutrino events and 6 anti-neutrino events are identified, 14 events have ambiguous charge. The neutrino oscillation parameters for {nu}{sub {mu}} and {bar {nu}}{sub {mu}} are studied using a maximum likelihood analysis. The measurement does not place constraining limits on the neutrino oscillation parameters due to the limited statistics of the data set analysed. However, this thesis represents the first observation of charge separated atmospheric neutrino interactions. It also details the techniques developed to perform atmospheric neutrino analyses in the MINOS Far Detector.

  2. Jack Steinberger and the Muon-Neutrino

    Office of Scientific and Technical Information (OSTI)

    High-energy Neutrino Beams; Review of Modern Physics, Vol. 61, Issue 3: 533 - 545; July 1989 Top Additional Web Pages: Discovery of the Muon-Neutrino, 1988 The 1988 Nobel Prize in...

  3. Nonequilibrium neutrino statistical mechanics in the expanding...

    Office of Scientific and Technical Information (OSTI)

    We study neutrino decoupling in the early Universe (ital tsimilar tosec,ital Tsimilar toMeV) by integrating the Boltzmann equations that govern the neutrino phase-space ...

  4. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Goals of BooNE BooNE's primary goal is to investigate the neutrino oscillation signal reported by the Los Alamos Liquid Scintillator Neutrino Detector (LSND) experiment. In 1995,...

  5. Particle physics confronts the solar neutrino problem

    SciTech Connect (OSTI)

    Pal, P.B.

    1991-06-01

    This review has four parts. In Part I, we describe the reactions that produce neutrinos in the sun and the expected flux of those neutrinos on the earth. We then discuss the detection of these neutrinos, and how the results obtained differ from the theoretical expectations, leading to what is known as the solar neutrino problem. In Part II, we show how neutrino oscillations can provide a solution to the solar neutrino problem. This includes vacuum oscillations, as well as matter enhanced oscillations. In Part III, we discuss the possibility of time variation of the neutrino flux and how a magnetic moment of the neutrino can solve the problem. WE also discuss particle physics models which can give rise to the required values of magnetic moments. In Part IV, we present some concluding remarks and outlook for the recent future.

  6. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from one of the Fermilab proton accelerators -- the Booster -- are used to generate muon neutrinos, one of the three types of neutrinos presently known. In the first stage of...

  7. Neutrinos and cosmology: a lifetime relationship

    SciTech Connect (OSTI)

    Serpico, Pasquale D.; /Fermilab

    2008-06-01

    We consider the example of neutrino decays to illustrate the profound relation between laboratory neutrino physics and cosmology. Two case studies are presented: In the first one, we show how the high precision cosmic microwave background spectral data collected by the FIRAS instrument on board of COBE, when combined with Lab data, have greatly changed bounds on the radiative neutrino lifetime. In the second case, we speculate on the consequence for neutrino physics of the cosmological detection of neutrino masses even as small as {approx}0.06 eV, the lower limit guaranteed by neutrino oscillation experiments. We show that a detection at that level would improve by many orders of magnitude the existing limits on neutrino lifetime, and as a consequence on some models of neutrino secret interactions.

  8. Computational Sciences and Engineering Division

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    If you have questions or comments regarding any of our research and development activities, how to work with ORNL and the Computational Sciences and Engineering (CSE) Division, or the content of this website please contact one of the following people: If you have questions regarding CSE technologies and capabilities, job opportunities, working with ORNL and the CSE Division, intellectual property, etc., contact, Shaun S. Gleason, Ph.D. Division Director, Computational Sciences and Engineering

  9. Los Alamos Science, Number 25 -- 1997: Celebrating the neutrino

    SciTech Connect (OSTI)

    Cooper, N.G.

    1997-12-31

    This issue is devoted to the neutrino and its remaining mysteries. It is divided into the following areas: (1) The Reines-Cowan experiment -- detecting the poltergeist; (2) The oscillating neutrino -- an introduction to neutrino masses and mixing; (3) A brief history of neutrino experiments at LAMPF; (4) A thousand eyes -- the story of LSND (Los Alamos neutrino oscillation experiment); (5) The evidence for oscillations; (6) The nature of neutrinos in muon decay and physics beyond the Standard Model; (7) Exorcising ghosts -- in pursuit of the missing solar neutrinos; (8) MSW -- a possible solution to the solar neutrino problem; (8) Neutrinos and supernovae; and (9) Dark matter and massive neutrinos.

  10. Los Alamos Science, Number 25 -- 1997: Celebrating the Neutrino

    DOE R&D Accomplishments [OSTI]

    Cooper, N. G. ed.

    1997-01-01

    This issue is devoted to the neutrino and its remaining mysteries. It is divided into the following areas: (1) The Reines-Cowan experiment -- detecting the poltergeist; (2) The oscillating neutrino -- an introduction to neutrino masses and mixing; (3) A brief history of neutrino experiments at LAMPF; (4) A thousand eyes -- the story of LSND (Los Alamos neutrino oscillation experiment); (5) The evidence for oscillations; (6) The nature of neutrinos in muon decay and physics beyond the Standard Model; (7) Exorcising ghosts -- in pursuit of the missing solar neutrinos; (8) MSW -- a possible solution to the solar neutrino problem; (8) Neutrinos and supernovae; and (9) Dark matter and massive neutrinos.

  11. Employment Solutions Division (HC-13)

    Broader source: Energy.gov [DOE]

    This division develops and implements innovative HCM business solutions relating to corporate recruiting, organizational and workforce development, workforce and succession planning, talent...

  12. Information Management Division (HC-14)

    Broader source: Energy.gov [DOE]

    This division provides operational support and consultative advice to the Chief Human Capital Officer and Departmental Senior Management on matters pertaining to the acquisition, deployment and...

  13. Research Divisions | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Research and Analysis Computing Center, Intermediate Voltage Electron Microscopy- Tandem Facility and the National Security Facility. The Energy Systems (ES) division conducts...

  14. Berkeley Lab - Materials Sciences Division

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    How to Train Your Bacterium Peidong Yang, a chemist with Berkeley Lab's Materials Sciences Division, and his researchers are using the bacterium Moorella thermoacetica to perform...

  15. Operations Division at Berkeley Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cmte. Safety Walkaround Checklist Jun 2015 Emergency Action Guide JHA Ergo Awareness Lessons Learned Safety Tips Safety Concerns Box DivisionsDepartments Suggestions Search:...

  16. Mission | APS Engineering Support Division

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    mission, the APS Engineering Support Division provides: Highly reliable, state-of-the-art computer infrastructure to meet the needs of the APS. Leading-edge information...

  17. European Strategy for Future Neutrino Physics

    ScienceCinema (OSTI)

    None

    2011-10-06

    A workshop to discuss the possibilities for future neutrino investigations in Europe and the links to CERN.

  18. From Neutrino Factory to Muon Collider

    SciTech Connect (OSTI)

    Geer, S.; /Fermilab

    2010-01-01

    Both Muon Colliders and Neutrino Factories require a muon source capable of producing and capturing {Omicron}(10{sup 21}) muons/year. This paper reviews the similarities and differences between Neutrino Factory and Muon Collider accelerator complexes, the ongoing R&D needed for a Muon Collider that goes beyond Neutrino Factory R&D, and some thoughts about how a Neutrino Factory on the CERN site might eventually be upgraded to a Muon Collider.

  19. Multipole expansion method for supernova neutrino oscillations

    SciTech Connect (OSTI)

    Duan, Huaiyu; Shalgar, Shashank, E-mail: duan@unm.edu, E-mail: shashankshalgar@unm.edu [Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States)

    2014-10-01

    We demonstrate a multipole expansion method to calculate collective neutrino oscillations in supernovae using the neutrino bulb model. We show that it is much more efficient to solve multi-angle neutrino oscillations in multipole basis than in angle basis. The multipole expansion method also provides interesting insights into multi-angle calculations that were accomplished previously in angle basis.

  20. Nuclear astrophysics in a q-environment

    SciTech Connect (OSTI)

    Coraddu, M.; Quarati, P.; Scarfone, A. M.

    2007-12-06

    Fluctuations and dynamical collisions can be responsible of non standard distributions observed in many astrophysical environments or astrophysical plasmas. In fact, since Coulomb collisions are the means to achieve equilibrium, plasmas are typically not in global thermodynamic equilibrium. We examine three different and linked problems whose solution is needed to determine parameters concerning evolution through metastable states of stars and other astrophysical systems: role of temperature and density fluctuation, electron screening of nuclear reactions and penetrability, evolution and comparison of different collision frequencies to establish the degree of deviation from the global thermodynamic equilibrium usually assumed. We indicate how these problems should be treated in a generalized environment by means of the q-generalized statistics and evaluate the collision frequencies, confirming that deviations from a global equilibrium cannot be neglected in these systems.

  1. Lightning Talks 2015: Theoretical Division

    SciTech Connect (OSTI)

    Shlachter, Jack S.

    2015-11-25

    This document is a compilation of slides from a number of student presentations given to LANL Theoretical Division members. The subjects cover the range of activities of the Division, including plasma physics, environmental issues, materials research, bacterial resistance to antibiotics, and computational methods.

  2. 3.8 The Missing Solar Neutrinos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 6/1/2011 3.8 The Missing Solar Neutrinos A neutrino is created, along with an electron, when the nucleus of an atom disintegrates through beta decay. Neutrinos are produced, for example, in the nuclear reactions that fuel the burning of stars, such as the Sun. But for some reason, fewer electron neutrinos reach the Earth than would be expected based on known solar processes. This phenomenon was first suggested by observations at the oldest solar neutrino detector (in South Dakota), for which

  3. The Astrophysics Simulation Collaboratory portal: A framework foreffective distributed research

    SciTech Connect (OSTI)

    Bondarescu, Ruxandra; Allen, Gabrielle; Daues, Gregory; Kelly,Ian; Russell, Michael; Seidel, Edward; Shalf, John; Tobias, Malcolm

    2003-03-03

    We describe the motivation, architecture, and implementation of the Astrophysics Simulation Collaboratory (ASC) portal. The ASC project provides a web-based problem solving framework for the astrophysics community that harnesses the capabilities of emerging computational grids.

  4. Division 1137 property control system

    SciTech Connect (OSTI)

    Pastor, D.J.

    1982-01-01

    An automated data processing property control system was developed by Mobile and Remote Range Division 1137. This report describes the operation of the system and examines ways of using it in operational planning and control.

  5. E-Division activities report

    SciTech Connect (OSTI)

    Barschall, H.H.

    1984-07-01

    E (Experimental Physics) Division carries out basic and applied research in atomic and nuclear physics, in materials science, and in other areas related to the missions of the Laboratory. Some of the activities are cooperative efforts with other divisions of the Laboratory, and, in a few cases, with other laboratories. Many of the experiments are directly applicable to problems in weapons and energy, some have only potential applied uses, and others are in pure physics. This report presents abstracts of papers published by E (Experimental Physics) Division staff members between July 1983 and June 1984. In addition, it lists the members of the scientific staff of the division, including visitors and students, and some of the assignments of staff members on scientific committees. A brief summary of the budget is included.

  6. Oregon Public Health Division | Open Energy Information

    Open Energy Info (EERE)

    Division Jump to: navigation, search Name: Oregon Public Health Division Address: 800 NE Oregon Street, Suite 930 Place: Portland, Oregon Zip: 97232 Phone Number: 971-673-1222...

  7. Nevada Division of Minerals | Open Energy Information

    Open Energy Info (EERE)

    Logo: Nevada Division of Minerals Name: Nevada Division of Minerals Address: 400 W. King St. 106 Place: Carson City, Nevada Zip: 89703 Website: minerals.state.nv.us...

  8. Mathematics and Computer Science Division | Argonne National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mathematics and Computer Science Division To help solve some of the nation's most critical scientific problems, the Mathematics and Computer Science (MCS) Division at Argonne ...

  9. Physics Division Work Planning Requirements

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Requirements The following is Physics Division requirements related to work planning, control and authorization for work projects and test set ups in division work areas across the laboratory. For the testing and commissioning of experimental equipment the consequences/cost of said equipment should receive careful consideration when doing the risk analysis. * Any small setup or task with total duration of less than two weeks requires an informal task hazard analysis. Informal means we can do

  10. Everything under the sun: A review of solar neutrinos (Journal...

    Office of Scientific and Technical Information (OSTI)

    Everything under the sun: A review of solar neutrinos Citation Details In-Document Search Title: Everything under the sun: A review of solar neutrinos Solar neutrinos offer a...

  11. Astrophysical Sources of Cosmic Rays and Related Measurements with the Pierre Auger Observatory

    SciTech Connect (OSTI)

    Abraham, : J.; Abreu, P.; Aglietta, M.; Aguirre, C.; Ahn, E.J.; Allard, D.; Allekotte, I.; Allen, J.; Alvarez-Muniz, J.; Ambrosio, M.; Anchordoqui, L.

    2009-06-01

    These are presentations to be presented at the 31st International Cosmic Ray Conference, in Lodz, Poland during July 2009. It consists of the following presentations: (1) Correlation of the highest energy cosmic rays with nearby extragalactic objects in Pierre Auger Observatory data; (2) Discriminating potential astrophysical sources of the highest energy cosmic rays with the Pierre Auger Observatory; (3) Intrinsic anisotropy of the UHECR from the Pierre Auger Observatory; (4) Ultra-high energy photon studies with the Pierre Auger Observatory; (5) Limits on the flux of diffuse ultra high energy neutrinos set using the Pierre Auger Observatory; (6) Search for sidereal modulation of the arrival directions of events recorded at the Pierre Auger Observatory; (7) Cosmic Ray Solar Modulation Studies in the Pierre Auger Observatory; (8) Investigation of the Displacement Angle of the Highest Energy Cosmic Rays Caused by the Galactic Magnetic Field; (9) Search for coincidences with astrophysical transients in Pierre Auger Observatory data; and (10) An alternative method for determining the energy of hybrid events at the Pierre Auger Observatory.

  12. Measuring neutrino oscillation parameters using $\

    SciTech Connect (OSTI)

    Backhouse, Christopher James; /Oxford U.

    2011-02-01

    MINOS is a long-baseline neutrino oscillation experiment. It consists of two large steel-scintillator tracking calorimeters. The near detector is situated at Fermilab, close to the production point of the NuMI muon-neutrino beam. The far detector is 735 km away, 716m underground in the Soudan mine, Northern Minnesota. The primary purpose of the MINOS experiment is to make precise measurements of the 'atmospheric' neutrino oscillation parameters ({Delta}m{sub atm}{sup 2} and sin{sup 2} 2{theta}{sub atm}). The oscillation signal consists of an energy-dependent deficit of {nu}{sub {mu}} interactions in the far detector. The near detector is used to characterize the properties of the beam before oscillations develop. The two-detector design allows many potential sources of systematic error in the far detector to be mitigated by the near detector observations. This thesis describes the details of the {nu}{sub {mu}}-disappearance analysis, and presents a new technique to estimate the hadronic energy of neutrino interactions. This estimator achieves a significant improvement in the energy resolution of the neutrino spectrum, and in the sensitivity of the neutrino oscillation fit. The systematic uncertainty on the hadronic energy scale was re-evaluated and found to be comparable to that of the energy estimator previously in use. The best-fit oscillation parameters of the {nu}{sub {mu}}-disappearance analysis, incorporating this new estimator were: {Delta}m{sup 2} = 2.32{sub -0.08}{sup +0.12} x 10{sup -3} eV{sup 2}, sin {sup 2} 2{theta} > 0.90 (90% C.L.). A similar analysis, using data from a period of running where the NuMI beam was operated in a configuration producing a predominantly {bar {nu}}{sub {mu}} beam, yielded somewhat different best-fit parameters {Delta}{bar m}{sup 2} = (3.36{sub -0.40}{sup +0.46}(stat.) {+-} 0.06(syst.)) x 10{sup -3}eV{sup 2}, sin{sup 2} 2{bar {theta}} = 0.86{sub -0.12}{sup _0.11}(stat.) {+-} 0.01(syst.). The tension between these results is

  13. Exclusive Neutrino Cross Sections From MiniBooNE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FTPOBOU 1JPO 1SPEVDUJPO r 3FDFOU .FBTVSFNFOUT . 5[BOPW 6OJWFSTJUZ PG $PMPSBEP Neutrino 2010 Conference, Athens Greece Martin Tzanov University of Colorado Neutrino 2010 3FTPOBOU 1JPO 1SPEVDUJPO r 3FDFOU .FBTVSFNFOUT Introduction. Experiments Review. Recent results. Future experiments. Summary. Martin Tzanov University of Colorado Neutrino 2010 Introduction A new interest in neutrino interactions in the few-GeV region started with the discovery of neutrino oscillations. Neutrino charged-current

  14. Microsoft PowerPoint - MiniBooNE Neutrino 2008

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Oscillation Searches Steve Brice (Fermilab) for the MiniBooNE Collaboration Neutrino 2008 Neutrino 2008 Steve Brice (FNAL) 2 Outline * Electron Neutrino Appearance - Oscillation Result - π 0 Rate Measurement - Combining Analyses - Compatibility of High ∆m 2 Measurements - Low Energy Electron Candidate Excess - Data from NuMI Beam * Muon Neutrino Disappearance * Anti-Electron Neutrino Appearance * Summary Neutrino 2008 Steve Brice (FNAL) 3 2 National Laboratories, 14 Universities, 80

  15. Accelerator-based neutrino oscillation searches

    SciTech Connect (OSTI)

    Whitehouse, D.A.; Rameika, R.; Stanton, N.

    1993-10-01

    This paper attempts to summarize the neutrino oscillation section of the Workshop on Future Directions in Particle and Nuclear Physics at Multi-GeV Hadron Beam Facilities. There were very lively discussions about the merits of the different oscillation channels, experiments, and facilities, but we believe a substantial consensus emerged. First, the next decade is one of great potential for discovery in neutrino physics, but it is also one of great peril. The possibility that neutrino oscillations explain the solar neutrino and atmospheric neutrino experiments, and the indirect evidence that Hot Dark Matter (HDM) in the form of light neutrinos might make up 30% of the mass of the universe, point to areas where accelerator-based experiments could play a crucial role in piecing together the puzzle. At the same time, the field faces a very uncertain future. The LSND experiment at LAMPF is the only funded neutrino oscillation experiment in the United States and it is threatened by the abrupt shutdown of LAMPF proposed for fiscal 1994. The future of neutrino physics at the Brookhaven National Laboratory AGS depends the continuation of High Energy Physics (HEP) funding after the RHIC startup. Most proposed neutrino oscillation searches at Fermilab depend on the completion of the Main Injector project and on the construction of a new neutrino beamline, which is uncertain at this point. The proposed KAON facility at TRIUMF would provide a neutrino beam similar to that at the AGS but with a much increase intensity. The future of KAON is also uncertain. Despite the difficult obstacles present, there is a real possibility that we are on the verge of understanding the masses and mixings of the neutrinos. The physics importance of such a discovery can not be overstated. The current experimental status and future possibilities are discussed below.

  16. The Fermilab long-baseline neutrino program

    SciTech Connect (OSTI)

    Goodman, M.; MINOS Collaboration

    1997-10-01

    Fermilab is embarking upon a neutrino oscillation program which includes a long-baseline neutrino experiment MINOS. MINOS will be a 10 kiloton detector located 730 km Northwest of Fermilab in the Soudan underground laboratory. It will be sensitive to neutrino oscillations with parameters above {Delta}m{sup 2} {approximately} 3 {times} 10{sup {minus}3} eV{sup 2} and sin{sup 2}(2{theta}) {approximately} 0.02.

  17. Jack Steinberger and the Muon-Neutrino

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Jack Steinberger and the Muon-Neutrino Resources with Additional Information Jack Steinberger Photograph by Harry Sticker, courtesy AIP Emilio Segre Visual Archives, Physics Today Collection In an interview, Jack Steinberger spoke about his 1988 Nobel Prize winning research. He states "I did an experiment, together with several other people at Brookhaven National Laboratory ... which showed that there is a second kind of neutrino. The neutrino has elementary particles. Elementary particles

  18. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Articles FermiNews Fermilab's biweekly magazine (several stories) Beam Line: Special Neutrino Issue A special issue of SLAC's quarterly magazine. Earth & Sky "Catching Ghost Particles": Interview with Janet Conrad Columbia Magazine "The Nature of the Neutrino": MiniBooNE and neutrinos The Los Angeles Times "It's No Small Matter": K. C. Cole's article detailing her summer 2003 stint at Fermilab working on MiniBooNE [text only]

  19. Astrophysical data analysis with information field theory

    SciTech Connect (OSTI)

    Enßlin, Torsten

    2014-12-05

    Non-parametric imaging and data analysis in astrophysics and cosmology can be addressed by information field theory (IFT), a means of Bayesian, data based inference on spatially distributed signal fields. IFT is a statistical field theory, which permits the construction of optimal signal recovery algorithms. It exploits spatial correlations of the signal fields even for nonlinear and non-Gaussian signal inference problems. The alleviation of a perception threshold for recovering signals of unknown correlation structure by using IFT will be discussed in particular as well as a novel improvement on instrumental self-calibration schemes. IFT can be applied to many areas. Here, applications in in cosmology (cosmic microwave background, large-scale structure) and astrophysics (galactic magnetism, radio interferometry) are presented.

  20. W&M, JLab Host International Neutrino Workshop (William & Mary...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    W&M, JLab Host International Neutrino Workshop (William & Mary News & Events) External Link: http:www.wm.edunewsstories2012william--mary-hosts-international-neutrino-w... By ...

  1. EA-1943: Construction and Operation of the Long Baseline Neutrino...

    Energy Savers [EERE]

    43: Construction and Operation of the Long Baseline Neutrino Facility and Deep Underground ... EA-1943: Construction and Operation of the Long Baseline Neutrino Facility and Deep ...

  2. A MEASUREMENT OF THE MUON NEUTRINO CHARGED CURRENT QUASIELASTIC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MUON NEUTRINO CHARGED CURRENT QUASIELASTIC INTERACTION AND A TEST OF LORENTZ VIOLATION ... A MEASUREMENT OF THE MUON NEUTRINO CHARGED CURRENT QUASIELASTIC INTERACTION AND A TEST OF ...

  3. Diluted equilibrium sterile neutrino dark matter (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Diluted equilibrium sterile neutrino dark matter This content will become publicly available on November 5, 2016 Prev Next Title: Diluted equilibrium sterile neutrino dark ...

  4. PeV Neutrinos from Intergalactic Interactions of Cosmic Rays...

    Office of Scientific and Technical Information (OSTI)

    PeV Neutrinos from Intergalactic Interactions of Cosmic Rays Emitted by Active Galactic Nuclei Citation Details In-Document Search Title: PeV Neutrinos from Intergalactic ...

  5. Detecting electron neutrinos from solar dark matter annihilation...

    Office of Scientific and Technical Information (OSTI)

    Detecting electron neutrinos from solar dark matter annihilation by JUNO Citation Details In-Document Search Title: Detecting electron neutrinos from solar dark matter annihilation ...

  6. Research in theoretical nuclear and neutrino physics. Final report...

    Office of Scientific and Technical Information (OSTI)

    Research in theoretical nuclear and neutrino physics. Final report Citation Details In-Document Search Title: Research in theoretical nuclear and neutrino physics. Final report The ...

  7. Research in theoretical nuclear and neutrino physics. Final report...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Research in theoretical nuclear and neutrino physics. Final report Citation Details In-Document Search Title: Research in theoretical nuclear and neutrino physics...

  8. From super beams to neutrino factories

    SciTech Connect (OSTI)

    Bross, Alan; /Fermilab

    2009-11-01

    The Neutrino Factory, which produces an extremely intense source of flavor-tagged neutrinos from muon decays in a storage ring, arguably gives the best physics reach for CP violation, as well as virtually all parameters in the neutrino oscillation parameter space. I will briefly describe the physics capabilities of the baseline Neutrino Factory as compared to other possible future facilities ({beta}-beam and super-beam facilities), give an overview of the accelerator complex and describe in detail the current international R&D program.

  9. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    MiniBooNE-darkmatter collaboration Original MiniBooNE collaboration From script reading a simple data base, last updated 2008. from inspirehep.net Booster Neutrino...

  10. Non-Oscillation Probes of Neutrino Masses

    SciTech Connect (OSTI)

    Weinheimer, C. [Westfaelische Wilhelms-Universitaet Muenster Institut fuer Kernphysik, Wilhelm-Klemm-Str. 9, D-48149 Muenster (Germany)

    2010-03-30

    The absolute scale of neutrino masses is very important for understanding the evolution and the structure formation of the universe as well as for nuclear and particle physics beyond the present Standard Model. Complementary to deducing statements on the neutrino mass from cosmological observations, two different methods to determine the neutrino mass scale in the laboratory are pursued: the search for neutrinoless double beta decay and the direct neutrino mass search. For both methods currently experiments with a sensitivity of O(100) meV are being set up or commissioned.

  11. Scintillator yields glimpse of elusive solar neutrinos

    SciTech Connect (OSTI)

    Smart, Ashley G.

    2014-11-01

    The low-energy neutrinos are byproducts of the first reaction in a chain that generates 99% of the Sun’s energy.

  12. Searches for Neutrino-less Double

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Searches for Neutrino-less Double Beta-Decay: a Decade of Discovery Ahead at the ton-scale? David Nygren University of Texas at Arlington September 2, 2015 4:00 p.m. Double beta-decay with the emission of neutrinos is an allowed second-order process and has been observed in several candidate nuclei such as 76Ge, 82Se, and 136Xe. A neutrino-less decay mode is theoretically possible as well, with profound implications such as non-conservation of lepton number. The neutrino-less decay can only

  13. Jack Steinberger and the Muon-Neutrino

    Office of Scientific and Technical Information (OSTI)

    Jack Steinberger and the Muon-Neutrino Resources with Additional Information Jack Steinberger Photograph by Harry Sticker, courtesy AIP Emilio Segre Visual Archives, Physics Today ...

  14. Search for Neutrinos from the Sun

    DOE R&D Accomplishments [OSTI]

    Davis, Raymond Jr.

    1968-09-01

    A solar neutrino detection system has been built to observe the neutrino radiation from the sun. The detector uses 3,900,000 liters of tetrachloroethylene as the neutrino capturing medium. Argon is removed from the liquid by sweeping with helium gas, and counted in a small low level proportional counter. The recovery efficiency of the system was tested with Ar{sup 36} by the isotope dilution method, and also with Ar{sup 37} produced in the liquid by fast neutrons. These tests demonstrate that Ar{sup 37} produced in the liquid by neutrino capture can be removed with a 95 percent efficiency by the procedure used.

  15. UNCLASSIFIED Los Alamos Astrophysics Distinguished Seminar Series

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Astrophysics Distinguished Seminar Series Ryan Miranda Cornell University Sustained Dust Asymmetries At Dead Zone Edges in Protoplanetary Disks Thursday, July 21, 2016 2:00 PM - 3:00 PM T-DO Conf Room (TA-03, Building 123, Room 121) Abstract. Protoplanetary disks, consisting of gas and dust in orbit around a newly formed star, are the birthplaces of planetary systems. Several observations of transition disks, a class of protoplanetary disks in which the first stages of planet

  16. Procurement Division Introduction | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Procurement Division Procurement Division Introduction Travel and Conference Services Careers/ Human Resources Directory Diversity and Inclusion Environment, Safety & Health Furth Plasma Physics Library Lab Leadership Organization Chart Technology Transfer Contact Us Business Operations Procurement Division Procurement Division Introduction Travel and Conference Services Careers/ Human Resources Directory Diversity and Inclusion Environment, Safety & Health Furth Plasma Physics Library

  17. First search for neutrinos in correlation with gamma-ray bursts with the ANTARES neutrino telescope

    SciTech Connect (OSTI)

    NONE

    2013-03-01

    A search for neutrino-induced muons in correlation with a selection of 40 gamma-ray bursts that occurred in 2007 has been performed with the ANTARES neutrino telescope. During that period, the detector consisted of 5 detection lines. The ANTARES neutrino telescope is sensitive to TeVPeV neutrinos that are predicted from gamma-ray bursts. No events were found in correlation with the prompt photon emission of the gamma-ray bursts and upper limits have been placed on the flux and fluence of neutrinos for different models.

  18. Evidence for neutrino mass: A decade of discovery

    SciTech Connect (OSTI)

    Heeger, Karsten M.

    2004-12-08

    Neutrino mass and mixing are amongst the major discoveries of recent years. From the observation of flavor change in solar and atmospheric neutrino experiments to the measurements of neutrino mixing with terrestrial neutrinos, recent experiments have provided consistent and compelling evidence for the mixing of massive neutrinos. The discoveries at Super-Kamiokande, SNO, and KamLAND have solved the long-standing solar neutrino problem and demand that we make the first significant revision of the Standard Model in decades. Searches for neutrinoless double-beta decay probe the particle nature of neutrinos and continue to place limits on the effective mass of the neutrino. Possible signs of neutrinoless double-beta decay will stimulate neutrino mass searches in the next decade and beyond. I review the recent discoveries in neutrino physics and the current evidence for massive neutrinos.

  19. Long Baseline Neutrino Beams and Large Detectors

    SciTech Connect (OSTI)

    Samios,N.P.

    2008-10-27

    It is amazing to acknowledge that in roughly 70 years from when the existence of the neutrino was postulated, we are now contemplating investigating the mysteries of this particle (or particles) requiring and utilizing detectors of 300 ktons , distances of 1,000-2,000 kilometers, beam intensities of megawatts and underground depth of 5,000 feet. This evolution has evolved slowly, from the experimental discovery of the neutrino in 1956, to the demonstration that there were two neutrinos in 1962 and three and only three by 1991. The great excitement occurred in the 2000's coming from the study of solar and atmospheric neutrinos in which neutrinos were observed to oscillate and therefore have mass. Although the absolute mass of any of the neutrinos has yet to be determined (the upper limit is less than I electron volt) the difference in this square of these masses has been measured, yielding a value of (2.3 {+-} .2) 10{sup -3} ev{sup 2} for atmospheric neutrinos and (7.6 {+-} .2) 10{sup -5} ev{sup 2} for solar neutrinos. In addition their mixing angles were found to be 45{sup o} for atmospheric neutrinos and 34{sup o} for solar neutrinos. This present state of knowledge on neutrinos is pictorially displayed in Fig. 1. Of course, mixing between flavors had already been observed in the quark sector as exemplified by the Cabbibo-Kobayashi-Meskawa Matrix. It was therefore natural to extend this formalism to the lepton sector involving unitary 3 x 3 matrices and one CP violating phase. This is shown in Fig. 2 for the two sectors, quark and leptons including the Jarlskog invariant (J).

  20. The neutrino portal to new physics

    SciTech Connect (OSTI)

    Ma, Ernest

    2014-06-24

    Neutrinos may have interactions beyond those of the standard model. They may be responsible for neutrino mass and provide a link to other fundamental issues of particle physics such as dark matter. A brief incomplete survey of some of the theoretical ideas along this direction is offered.

  1. Neutrino SuperBeams at Fermilab

    SciTech Connect (OSTI)

    Parke, Stephen J.; /Fermilab

    2011-08-23

    In this talk I will give a brief description of long baseline neutrino physics, the LBNE experiment and Project X at Fermilab. A brief outline of the physics of long baseline neutrino experiments, LBNE and Project X at Fermilab is given in this talk.

  2. Variations in the Solar Neutrino Flux

    DOE R&D Accomplishments [OSTI]

    Davis, R. Jr.; Cleveland, B. T.; Rowley, J. K.

    1987-08-02

    Observations are reported from the chlorine solar neutrino detector in the Homestake Gold Mine, South Dakota, USA. They extend from 1970 to 1985 and yield an average neutrino capture rate of 2.1 +- 0.3 SNU. The results from 1977 to 1985 show an anti-correlation with the solar activity cycle, and an apparent increased rate during large solar flares.

  3. Testing quantum gravity via cosmogenic neutrino oscillations

    SciTech Connect (OSTI)

    Christian, Joy

    2005-01-15

    Implications of some proposed theories of quantum gravity for neutrino flavor oscillations are explored within the context of modified dispersion relations of special relativity. In particular, approximate expressions for Planck scale-induced deviations from the standard oscillation length are obtained as functions of neutrino mass, energy, and propagation distance. Grounding on these expressions, it is pointed out that, in general, even those deviations that are suppressed by the second power of the Planck energy may be observable for ultra-high-energy neutrinos, provided they originate at cosmological distances. In fact, for neutrinos in the highest energy range of EeV to ZeV, deviations that are suppressed by as much as the seventh power of the Planck energy may become observable. Accordingly, realistic possibilities of experimentally verifying these deviations by means of the next generation neutrino detectors--such as IceCube and ANITA--are investigated.

  4. Probing exotic physics with cosmic neutrinos

    SciTech Connect (OSTI)

    Hooper, Dan; /Fermilab

    2005-10-01

    Traditionally, collider experiments have been the primary tool used in searching for particle physics beyond the Standard Model. In this talk, I will discuss alternative approaches for exploring exotic physics scenarios using high energy and ultra-high energy cosmic neutrinos. Such neutrinos can be used to study interactions at energies higher, and over baselines longer, than those accessible to colliders. In this way, neutrino astronomy can provide a window into fundamental physics which is highly complementary to collider techniques. I will discuss the role of neutrino astronomy in fundamental physics, considering the use of such techniques in studying several specific scenarios including low scale gravity models, Standard Model electroweak instanton induced interactions, decaying neutrinos and quantum decoherence.

  5. Light sterile neutrinos in the early universe

    SciTech Connect (OSTI)

    Lunardini, Cecilia

    2014-06-24

    Cosmological and terrestrial data suggests the number of light neutrinos may be greater than 3, motivating a careful reexamination of cosmological bounds on extra light species. Big bang nucleosynthesis constrains the number of relativistic neutrino species present during nucleosynthesis, N{sub eff}{sup BBN}, while measurements of the cosmic microwave background (CMB) angular power spectrum constrain the effective energy density in relativistic neutrinos at the time of matter-radiation equality, N{sub eff}{sup CMB}. We review a scenario with two sterile neutrinos and explore whether partial thermalization of the sterile states can ease the tension between cosmological constraints on N{sub eff}{sup BBN} and terrestrial data. We conclude that, still, two additional light sterile neutrinos species cannot fit all the data at the 95% confidence level.

  6. Investigation of Neutrino Properties with Bolometric Detectors

    SciTech Connect (OSTI)

    Heeger, Karsten M

    2014-11-01

    Neutrino mass and mixing are amongst the major discoveries of the past decade. The particle nature of neutrinos and the hierarchy of mass eigenstates, however, are unknown. Neutrinoless double beta-decay (0νββ) is the only known mechanism to test whether neutrinos are their own antiparticles. The observation of 0νββ would imply lepton number violation and show that neutrinos have Majorana mass. This report describes research activities performed at the University of Wisconsin in 2011-2014 aimed at the search for 0νββ with CUORE-0 and CUORE with the goal of exploring the inverted mass hierarchy region and probing an effective neutrino mass of ~40- 120 meV.

  7. Dirac neutrino in warped extra dimensions

    SciTech Connect (OSTI)

    Chang, W.-F.; Ng, John N.; Wu, Jackson M. S.

    2009-12-01

    We implement Dirac neutrinos in the minimal custodial Randall-Sundrum setting via the Krauss-Wilczek mechanism. We demonstrate by giving explicit lepton mass matrices that with neutrinos in the normal hierarchy, lepton mass and mixing patterns can be naturally reproduced at the scale set by the constraints from electroweak precision measurements, and at the same time without violating bounds set by lepton flavor violations. Our scenario generically predicts a nonzero neutrino mixing angle {theta}{sub 13}, as well as the existence of sub-TeV right-handed Kaluza-Klein neutrinos, which partner the right-handed standard model charged leptons. These relatively light KK neutrinos may be searched for at the LHC.

  8. Resolving Standard and Nonstandard CP Violation Phases in Neutrino Oscillations

    SciTech Connect (OSTI)

    Gago, A. M.; Minakata, H.; Uchinami, S.; Nunokawa, H.; Zukanovich Funchal, R.

    2010-03-30

    Neutrino oscillations can exhibit extra CP violation effects, beyond those expected from the standard Kobayashi-Maskawa phase delta, if non-standard neutrino interactions are at play. We show that it is possible to disentangle the two CP violating effects by measuring muon neutrino appearance using a near-far two detector setting in a neutrino factory experiment.

  9. Astrophysical tests of mirror dark matter

    SciTech Connect (OSTI)

    Ciarcelluti, P.

    2008-08-29

    Mirror matter is a self-collisional dark matter candidate. If exact mirror parity is a conserved symmetry of the nature, there could exist a parallel hidden (mirror) sector of the Universe which has the same kind of particles and the same physical laws of our (visible) sector. The two sectors interact each other only via gravity, therefore mirror matter is naturally 'dark'. The most promising way to test this dark matter candidate is to look at its astrophysical signatures, as Big Bang nucleosynthesis, primordial structure formation and evolution, cosmic microwave background and large scale structure power spectra.

  10. SAGE: Solar Neutrino Data from SAGE, the Russian-American Gallium Solar Neutrino Experiment

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    SAGE Collaboration

    SAGE is a solar neutrino experiment based on the reaction 71Ga + n goes to 71Ge + e-. The 71Ge atoms are chemically extracted from a 50-metric ton target of Ga metal and concentrated in a sample of germane gas mixed with xenon. The atoms are then individually counted by observing their decay back to 71Ga in a small proportional counter. The distinguishing feature of the experiment is its ability to detect the low-energy neutrinos from proton-proton fusion. These neutrinos, which are made in the primary reaction that provides the Sun's energy, are the major component of the solar neutrino flux and have not been observed in any other way. To shield the experiment from cosmic rays, it is located deep underground in a specially built facility at the Baksan Neutrino Observatory in the northern Caucasus mountains of Russia. Nearly 100 measurements of the solar neutrino flux have been made during 1990-2000, and their combined result is a neutrino capture rate that is well below the prediction of the Standard Solar Model. The significant suppression of the solar neutrino flux that SAGE and other solar neutrino experiments have observed gives a strong indication for the existence of neutrino oscillations. [copied from the SAGE homepage at http://ewi.npl.washington.edu/SAGE/SAGE.html

  11. Detecting Neutrinos with the NOvA Detectors (Other) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    PARTICLES AND FIELDS NOVA; NEUTRINO; NEUTRINO DETECTOR; DETECTOR; COSMIC RAY; NEUTRINO INTERACTION Word Cloud More Like This Multimedia File size NAView Multimedia View Multimedia...

  12. Computational Astrophysics Consortium 3 - Supernovae, Gamma-Ray Bursts and

    Office of Scientific and Technical Information (OSTI)

    Nucleosynthesis (Technical Report) | SciTech Connect Computational Astrophysics Consortium 3 - Supernovae, Gamma-Ray Bursts and Nucleosynthesis Citation Details In-Document Search Title: Computational Astrophysics Consortium 3 - Supernovae, Gamma-Ray Bursts and Nucleosynthesis Final project report for UCSC's participation in the Computational Astrophysics Consortium - Supernovae, Gamma-Ray Bursts and Nucleosynthesis. As an appendix, the report of the entire Consortium is also appended.

  13. Final Report: SciDAC Computational Astrophysics Consortium (at Princeton

    Office of Scientific and Technical Information (OSTI)

    University) (Technical Report) | SciTech Connect Final Report: SciDAC Computational Astrophysics Consortium (at Princeton University) Citation Details In-Document Search Title: Final Report: SciDAC Computational Astrophysics Consortium (at Princeton University) Supernova explosions are the central events in astrophysics. They are the major agencies of change in the interstellar medium, driving star formation and the evolution of galaxies. Their gas remnants are the birthplaces of the cosmic

  14. RFP Workshops - Center for Plasma in the Laboratory and Astrophysics...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Rotating Wall Machine Plasma-Couette Experiment Madison Plasma Dynamo Experiment - Theory Groups MHD Turbulence Transport in Fusion Devices Plasma Astrophysics RFP Theory -...

  15. Final Report: SciDAC Computational Astrophysics Consortium (at...

    Office of Scientific and Technical Information (OSTI)

    supernovae are unrivaled astrophysical laboratories. We will develop new state-of-the-art multi-dimensional radiation hydrodynamic codes to address this and other related...

  16. Astrophysics and Cosmology with TeV Gamma Rays

    SciTech Connect (OSTI)

    Aharonian, Felix

    2005-07-13

    I will discuss the astrophysical and cosmological implications of recent exciting discoveries of TeV gamma-rays from objects representing several Galactic and Extragalactic source populations.

  17. Astrophysical Accelerators of Ultrahigh Energy Cosmic Rays (Journal...

    Office of Scientific and Technical Information (OSTI)

    cosmic rays in light of the latest observational results from the Pierre Auger Observatory, highlighting potential astrophysical sources such as active galactic nuclei, gamma-ray ...

  18. SciDAC Computational Astrophysics Consortium (Technical Report...

    Office of Scientific and Technical Information (OSTI)

    Arguably, this is one of the great unsolved problems in modern astrophysics and its ... Country of Publication: United States Language: English Subject: 79 ASTRONOMY AND ...

  19. ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative

    Office of Scientific and Technical Information (OSTI)

    of Oklahoma Univ. of Oklahoma 79 ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative transfer, Dark Energy, Type Ia supernovae, radiative transfer, The...

  20. SECTION I: NUCLEAR STRUCTURE, FUNDAMENTAL INTERACTIONS AND ASTROPHYSIC...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J. Aysto, A. Saastamoinen, M. A. Bentley, D. Jenkins, T. Davinson, and P. J. Woods Breakup of sd-shell proton-rich nuclei for nuclear astrophysics......

  1. Influence of flavor oscillations on neutrino beam instabilities

    SciTech Connect (OSTI)

    Mendona, J. T.; Haas, F.; Bret, A.

    2014-09-15

    We consider the collective neutrino plasma interactions and study the electron plasma instabilities produced by a nearly mono-energetic neutrino beam in a plasma. We describe the mutual interaction between neutrino flavor oscillations and electron plasma waves. We show that the neutrino flavor oscillations are not only perturbed by electron plasmas waves but also contribute to the dispersion relation and the growth rates of neutrino beam instabilities.

  2. Researchers Discover a New Kind of Neutrino Transformation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Researchers Discover a New Kind of Neutrino Transformation Researchers Discover a New Kind of Neutrino Transformation NERSC, ESnet and computational scientists help researchers discover how neutrinos flavor-shift as they travel at near light-speed March 8, 2012 Linda Vu, lvu@lbl.gov, +1 510 495 2402 Daya Bay Neutrino Facility in China. Photo by: Roy Kaltschmidt, Lawrence Berkeley National Laboratory. Neutrinos, the wispy particles that flooded the universe in the earliest moments after the Big

  3. Phenomenological relations for neutrino masses and mixing parameters

    SciTech Connect (OSTI)

    Khruschov, V. V.

    2013-11-15

    Phenomenological relations for masses, angles, and CP phases in the neutrino mixing matrix are proposed with allowance for available experimental data. For the case of CP violation in the lepton sector, an analysis of the possible structure of the neutrino mass matrix and a calculation of the neutrino mass features and the Dirac CP phase for the bimodal-neutrino model are performed. The values obtained in this way can be used to interpret and predict the results of various neutrino experiments.

  4. Neutrino emission in the jet propagation process

    SciTech Connect (OSTI)

    Xiao, D.; Dai, Z. G.

    2014-07-20

    Relativistic jets are universal in long-duration gamma-ray burst (GRB) models. Before breaking out, they must propagate in the progenitor envelope along with a forward shock and a reverse shock forming at the jet head. Both electrons and protons will be accelerated by the shocks. High-energy neutrinos could be produced by these protons interacting with stellar materials and electron-radiating photons. The jet will probably be collimated, which may have a strong effect on the final neutrino flux. Under the assumption of a power-law stellar-envelope density profile ??r {sup ?} with index ?, we calculate the neutrino emission flux by these shocks for low-luminosity GRBs (LL-GRBs) and ultra-long GRBs (UL-GRBs) in different collimation regimes, using the jet propagation framework developed by Bromberg et al. We find that LL-GRBs and UL-GRBs are capable of producing detectable high-energy neutrinos up to ?PeV, from which the final neutrino spectrum can be obtained. Further, we conclude that a larger ? corresponds to greater neutrino flux at the high-energy end (?PeV) and to higher maximum neutrino energy as well. However, such differences are so small that it is not promising for us to be able to distinguish these in observations, given the energy resolution we have now.

  5. Theoretical Division Current Job Openings

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    PADSTE » ADTSC » T » Job Openings Theoretical Division Job Openings Explore the multiple dimensions of a career at Los Alamos Lab: work with the best minds on the planet in an inclusive environment that is rich in intellectual vitality and opportunities for growth. Click in the Job Number to be directed to the description/application page. Postdoc Positions IRC50385 Staff Scientist: Material Informatics IRC50253 Staff scientist: Quantum Information and Quantum Physics IRC49276 Theoretical and

  6. Jefferson Lab Divisions & Departments

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Divisions & Departments Privacy and Security Notice Skip over navigation search Search Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Jefferson Lab Navigation Home Search News Insight print version Org Charts Directorate Accelerator COO CFO IT/CIO CSO Engineering ESH&Q FEL Physics 12000 Jefferson Avenue, Newport News, VA 23606 Phone: (757) 269-7100 Fax: (757)

  7. Division Postdoctoral Appointments Frequently Asked Questions | Argonne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    National Laboratory Division Postdoctoral Appointments Frequently Asked Questions Are the Division Postdoctoral Appointments the same as "Regular Postdocs"? Yes. Who chooses the final candidate; DEP, the sub-committee, or the programmatic Division? The programmatic Division does. The sub-committee reviews the final candidate's application package to ensure that he or she complies with Argonne 's high standards and that all the requirements have been met. If the candidate has

  8. Long-wavelength vacuum neutrino oscillations and the solar-neutrino deficit

    SciTech Connect (OSTI)

    Barger, V.; Phillips, R.J.N.; Whisnant, K. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon Physics Department, Iowa State University, IA Ames Laboratory, Iowa State University, Ames, IA )

    1990-12-17

    Vacuum neutrino oscillations with very long wavelengths, comparable to the radius of the Earth's orbit, can simultaneously explain both the Homestake and Kamiokande-II solar-neutrino counting rates. They imply approximately a 50% reduction in the {nu}{sub {ital e}} flux from the {ital p}-{ital p} process, and seasonal variations in the {nu}-{ital e} scattering rates for {sup 7}Be and {ital pep} neutrinos, which distinguish this scenario from alternative explanations.

  9. A measurement of neutrino oscillations with muon neutrinos in the MINOS experiment

    SciTech Connect (OSTI)

    Coleman, Stephen James; /William-Mary Coll.

    2011-01-01

    Experimental evidence has established that neutrino flavor states evolve over time. A neutrino of a particular flavor that travels some distance can be detected in a different neutrino flavor state. The Main Injector Neutrino Oscillation Search (MINOS) is a long-baseline experiment that is designed to study this phenomenon, called neutrino oscillations. MINOS is based at Fermilab near Chicago, IL, and consists of two detectors: the Near Detector located at Fermilab, and the Far Detector, which is located in an old iron mine in Soudan, MN. Both detectors are exposed to a beam of muon neutrinos from the NuMI beamline, and MINOS measures the fraction of muon neutrinos that disappear after traveling the 734 km between the two detectors. One can measure the atmospheric neutrino mass splitting and mixing angle by observing the energy-dependence of this muon neutrino disappearance. MINOS has made several prior measurements of these parameters. Here I describe recently-developed techniques used to enhance our sensitivity to the oscillation parameters, and I present the results obtained when they are applied to a dataset that is twice as large as has been previously analyzed. We measure the mass splitting {Delta}m{sub 23}{sup 2} = (2.32{sub -0.08}{sup +0.12}) x 10{sup -3} eV{sup 2}/c{sup 4} and the mixing angle sin{sup 2}(2{theta}{sub 32}) > 0.90 at 90% C.L. These results comprise the world's best measurement of the atmospheric neutrino mass splitting. Alternative disappearance models are also tested. The neutrino decay hypothesis is disfavored at 7.2{sigma} and the neutrino quantum decoherence hypothesis is disfavored at 9.0{sigma}.

  10. Measuring Neutrino Oscillations with Nuclear Reactors

    SciTech Connect (OSTI)

    McKeown, R. D.

    2007-10-26

    Since the first direct observations of antineutrino events by Reines and Cowan in the 1950's, nuclear reactors have been an important tool in the study of neutrino properties. More recently, the study of neutrino oscillations has been a very active area of research. The pioneering observation of oscillations by the KamLAND experiment has provided crucial information on the neutrino mixing matrix. New experiments to study the remaining unknown mixing angle are currently under development. These recent studies and potential future developments will be discussed.

  11. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cross Sections MiniBooNE's neutrino flux (with a mean energy of ~700 MeV) dictates the type of neutrino interactions the experiment sees. At these energies, quasi-elastic (QE) and single pion production processes dominate. For MiniBooNE, the contributions from multi-pion production and deep inelastic scattering (DIS) are small. image: neutrino cross sections vs energy There are several cross sections which contribute at these energies. Here is a plot of the charged current (CC) cross section

  12. Deep Secrets of the Neutrino: Physics Underground

    SciTech Connect (OSTI)

    Rowson, P.C.

    2010-03-23

    Among the many beautiful, unexpected and sometimes revolutionary discoveries to emerge from subatomic physics, probably none is more bizarre than an elementary particle known as the 'neutrino'. More than a trillion of these microscopic phantoms pass unnoticed through our bodies every second, and indeed, through the entire Earth - but their properties remain poorly understood. In recent years, exquisitely sensitive experiments, often conducted deep below ground, have brought neutrino physics to the forefront. In this talk, we will explore the neutrino - what we know, what we want to know, and how one experiment in a New Mexico mine is trying to get there.

  13. IDS-NF Impact of Neutrino Cross Section Impact of Neutrino Cross Section

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    IDS-NF Impact of Neutrino Cross Section Impact of Neutrino Cross Section Knowledge on Oscillation Knowledge on Oscillation Measurements Measurements M. Sorel, IFIC (CSIC and U. of Valencia) IDS-NF, RAL, Jan 16-17 2008 M. Sorel - IFIC (Valencia U. & CSIC) 2 IDS-NF Neutrino Cross Sections: At What Energies Needed? Superbeams: Solid: T2K Dashed: NovA M. Sorel - IFIC (Valencia U. & CSIC) 3 IDS-NF Neutrino Cross Sections: At What Energies Needed? Superbeams: Solid: T2K Dashed: NovA Beta

  14. Constraining absolute neutrino masses via detection of galactic supernova neutrinos at JUNO

    SciTech Connect (OSTI)

    Lu, Jia-Shu; Cao, Jun; Li, Yu-Feng; Zhou, Shun

    2015-05-26

    A high-statistics measurement of the neutrinos from a galactic core-collapse supernova is extremely important for understanding the explosion mechanism, and studying the intrinsic properties of neutrinos themselves. In this paper, we explore the possibility to constrain the absolute scale of neutrino masses m{sub ν} via the detection of galactic supernova neutrinos at the Jiangmen Underground Neutrino Observatory (JUNO) with a 20 kiloton liquid-scintillator detector. In assumption of a nearly-degenerate neutrino mass spectrum and a normal mass ordering, the upper bound on the absolute neutrino mass is found to be m{sub ν}<(0.83±0.24) eV at the 95% confidence level for a typical galactic supernova at a distance of 10 kpc, where the mean value and standard deviation are shown to account for statistical fluctuations. For comparison, we find that the bound in the Super-Kamiokande experiment is m{sub ν}<(0.94±0.28) eV at the same confidence level. However, the upper bound will be relaxed when the model parameters characterizing the time structure of supernova neutrino fluxes are not exactly known, and when the neutrino mass ordering is inverted.

  15. Jeff Broughton Named NERSC Division Deputy for Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NERSC Division Deputy for Operations. The announcement was made Aug. 15 by NERSC Division Director Sudip Dosanjh. "Rather than this being a new position, the Division Deputy title...

  16. Nevada Division of Water Resources Forms Webpage | Open Energy...

    Open Energy Info (EERE)

    library Web Site: Nevada Division of Water Resources Forms Webpage Abstract Provides access to State of Nevada Division of Water Resources forms. Author State of Nevada Division...

  17. California Division of Water Rights | Open Energy Information

    Open Energy Info (EERE)

    Division of Water Rights Jump to: navigation, search Logo: California Division of Water Rights Name: California Division of Water Rights Place: Sacramento, California Phone Number:...

  18. Colorado Division of Water Resources | Open Energy Information

    Open Energy Info (EERE)

    Division of Water Resources Jump to: navigation, search Logo: Colorado Division of Water Resources Name: Colorado Division of Water Resources Address: 1313 Sherman St., Suite 818...

  19. New Mexico Historic Preservation Division | Open Energy Information

    Open Energy Info (EERE)

    Historic Preservation Division Jump to: navigation, search Logo: New Mexico Historic Preservation Division Name: New Mexico Historic Preservation Division Abbreviation: NMHPD...

  20. Neutrinos from Hell: the Dawn of Neutrino Geophysics

    ScienceCinema (OSTI)

    None

    2011-10-06

    Seismic waves have been for long time the only messenger reporting on the conditions deep inside the Earth. While global seismology provides amazing details about the structure of our planet, it is only sensitive to the mechanical properties of rocks and not to their chemical composition. In the last 5 years KamLAND and Borexino have started measuring anti-neutrinos produced by Uranium and Thorium inside the Earth. Such "Geoneutrinos" double the number of tools available to study the Earth's interior, enabling a sort of global chemical analysis of the planet, albeit for two elements only.I will discuss the results of these new measurements and put them in the context of the Earth Sciences."

  1. Astrophysical black holes in screened modified gravity

    SciTech Connect (OSTI)

    Davis, Anne-Christine; Jha, Rahul; Muir, Jessica; Gregory, Ruth E-mail: r.a.w.gregory@durham.ac.uk E-mail: jlmuir@umich.edu

    2014-08-01

    Chameleon, environmentally dependent dilaton, and symmetron gravity are three models of modified gravity in which the effects of the additional scalar degree of freedom are screened in dense environments. They have been extensively studied in laboratory, cosmological, and astrophysical contexts. In this paper, we present a preliminary investigation into whether additional constraints can be provided by studying these scalar fields around black holes. By looking at the properties of a static, spherically symmetric black hole, we find that the presence of a non-uniform matter distribution induces a non-constant scalar profile in chameleon and dilaton, but not necessarily symmetron gravity. An order of magnitude estimate shows that the effects of these profiles on in-falling test particles will be sub-leading compared to gravitational waves and hence observationally challenging to detect.

  2. Studies of High Energy Particle Astrophysics

    SciTech Connect (OSTI)

    Nitz, David F; Fick, Brian E

    2014-07-30

    This report covers the progress of the Michigan Technological University particle astrophysics group during the period April 15th, 2011 through April 30th, 2014. The principal investigator is Professor David Nitz. Professor Brian Fick is the Co-PI. The focus of the group is the study of the highest energy cosmic rays using the Pierre Auger Observatory. The major goals of the Pierre Auger Observatory are to discover and understand the source or sources of cosmic rays with energies exceeding 10**19 eV, to identify the particle type(s), and to investigate the interactions of those cosmic particles both in space and in the Earth's atmosphere. The Pierre Auger Observatory in Argentina was completed in June 2008 with 1660 surface detector stations and 24 fluorescence telescopes arranged in 4 stations. It has a collecting area of 3,000 square km, yielding an aperture of 7,000 km**2 sr.

  3. Nuclear Data for Astrophysics: Collections at NucAstroData.org

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    In May of 2003, Dr. Michael Smith, Physics Division, ORNL, published a paper announcing the launch of the new website NucAstroData.org and the rationale behind it. An excerpt from the abstract of that paper, found in volume 718, pages 339-346, of ScienceDirect - Nuclear Physics A, explains: "In order to address important astrophysics problems such as the origin of the chemical elements, the inner workings of our Sun, and the evolution of stars, crucial nuclear datasets are needed. Recent evaluation and dissemination efforts have produced a number of such datasets, many of which are online and readily available to the research community. Current international efforts in this field are, unfortunately, insufficient to keep pace with the latest nuclear physics measurements and model calculations. A dedicated effort is required to update and expand existing datasets. I discuss several strategies and new initiatives that would ensure a more effective utilization of nuclear data in astrophysics. These include launching a new web site, www.nucastrodata.org, to aid in locating available nuclear data sets, and an interactive online plotting program with an easy-to-use graphical user interface to over 8000 reaction rates." This website continues to be resource for the nuclear astrophysics community. NucAstroData provides both links to datasets around the world and a repository where researchers can upload their own data. Tools for generating and manipulating reaction rates, merging libraries of data, plotting data and performing other tasks are provided under the website's Infrastructure section and the menu selection for software leads to useful codes.

  4. Investigating High Field Gravity using Astrophysical Techniques

    SciTech Connect (OSTI)

    Bloom, Elliott D.; /SLAC

    2008-02-01

    The purpose of these lectures is to introduce particle physicists to astrophysical techniques. These techniques can help us understand certain phenomena important to particle physics that are currently impossible to address using standard particle physics experimental techniques. As the subject matter is vast, compromises are necessary in order to convey the central ideas to the reader. Many general references are included for those who want to learn more. The paragraphs below elaborate on the structure of these lectures. I hope this discussion will clarify my motivation and make the lectures easier to follow. The lectures begin with a brief review of more theoretical ideas. First, elements of general relativity are reviewed, concentrating on those aspects that are needed to understand compact stellar objects (white dwarf stars, neutron stars, and black holes). I then review the equations of state of these objects, concentrating on the simplest standard models from astrophysics. After these mathematical preliminaries, Sec. 2(c) discusses 'The End State of Stars'. Most of this section also uses the simplest standard models. However, as these lectures are for particle physicists, I also discuss some of the more recent approaches to the equation of state of very dense compact objects. These particle-physics-motivated equations of state can dramatically change how we view the formation of black holes. Section 3 focuses on the properties of the objects that we want to characterize and measure. X-ray binary systems and Active Galactic Nuclei (AGN) are stressed because the lectures center on understanding very dense stellar objects, black hole candidates (BHCs), and their accompanying high gravitational fields. The use of x-ray timing and gamma-ray experiments is also introduced in this section. Sections 4 and 5 review information from x-ray and gamma-ray experiments. These sections also discuss the current state of the art in x-ray and gamma-ray satellite experiments and

  5. The CAPTAIN liquid argon neutrino experiment

    SciTech Connect (OSTI)

    Liu, Qiuguang [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-01-01

    The CAPTAIN liquid argon experiment is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. The experiment employs two detectors a primary detector with approximately 10-ton of liquid argon that will be deployed at different facilities for physics measurements and a prototype detector with 2-ton of liquid argon for configuration testing. The physics programs for CAPTAIN include measuring neutron interactions at Los Alamos Neutron Science Center, measuring neutrino interactions in medium energy regime (1.55 GeV) at Fermilab's NuMI beam, and measuring neutrino interactions in low energy regime (< 50 MeV) at stopped pion sources for supernova neutrino studies.

  6. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by the Los Alamos LSND experiment. MiniBooNE represents the first phase for the BooNE collaboration and consists of a 1 GeV neutrino beam and a single, 800-ton mineral oil...

  7. The CAPTAIN liquid argon neutrino experiment

    SciTech Connect (OSTI)

    Liu, Qiuguang

    2015-01-01

    The CAPTAIN liquid argon experiment is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. The experiment employs two detectors – a primary detector with approximately 10-ton of liquid argon that will be deployed at different facilities for physics measurements and a prototype detector with 2-ton of liquid argon for configuration testing. The physics programs for CAPTAIN include measuring neutron interactions at Los Alamos Neutron Science Center, measuring neutrino interactions in medium energy regime (1.5–5 GeV) at Fermilab's NuMI beam, and measuring neutrino interactions in low energy regime (< 50 MeV) at stopped pion sources for supernova neutrino studies.

  8. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Booster Neutrino Experiment (BooNE) BooNE vs MiniBooNE Interesting Facts Posters Virtual Tour Picture Gallery News Articles Technical Information BooNE Proposal Original...

  9. The CAPTAIN liquid argon neutrino experiment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Liu, Qiuguang

    2015-01-01

    The CAPTAIN liquid argon experiment is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. The experiment employs two detectors – a primary detector with approximately 10-ton of liquid argon that will be deployed at different facilities for physics measurements and a prototype detector with 2-ton of liquid argon for configuration testing. The physics programs for CAPTAIN include measuring neutron interactions at Los Alamos Neutron Science Center, measuring neutrino interactions in medium energy regime (1.5–5 GeV) at Fermilab's NuMI beam, and measuring neutrino interactions in low energymore » regime (< 50 MeV) at stopped pion sources for supernova neutrino studies.« less

  10. Protoneutron star evolution and the neutrino-driven wind in general relativistic neutrino radiation hydrodynamics simulations

    SciTech Connect (OSTI)

    Fischer, T.; Mezzacappa, Anthony; Thielemann, F.-K.; Liebendoerfer, M.; Whitehouse, S.

    2010-01-01

    Massive stars end their lives in explosions with kinetic energies on the order of 10{sup 51} erg. Immediately after the explosion has been launched, a region of low density and high entropy forms behind the ejecta, which is continuously subject to neutrino heating. The neutrinos emitted from the remnant at the center, the protoneutron star (PNS), heat the material above the PNS surface. This heat is partly converted into kinetic energy, and the material accelerates to an outflow that is known as the neutrino-driven wind. For the first time we simulate the collapse, bounce, explosion, and the neutrino-driven wind phases consistently over more than 20 s. Our numerical model is based on spherically symmetric general relativistic radiation hydrodynamics using spectral three-flavor Boltzmann neutrino transport. In simulations where no explosions are obtained naturally, we model neutrino-driven explosions for low- and intermediate-mass Fe-core progenitor stars by enhancing the charged current reaction rates. In the case of a special progenitor star, the 8.8 M{circle_dot} O-Ne-Mg-core, the explosion in spherical symmetry was obtained without enhanced opacities. The post-explosion evolution is in qualitative agreement with static steady-state and parametrized dynamic models of the neutrino-driven wind. On the other hand, we generally find lower neutrino luminosities and mean neutrino energies, as well as a different evolutionary behavior of the neutrino luminosities and mean neutrino energies. The neutrino-driven wind is proton-rich for more than 10 s and the contraction of the PNS differs from the assumptions made for the conditions at the inner boundary in previous neutrino-driven wind studies. Despite the moderately high entropies of about 100 k{sub B}/baryon and the fast expansion timescales, the conditions found in our models are unlikely to favor r-process nucleosynthesis. The simulations are carried out until the neutrino-driven wind settles down to a quasi

  11. Is the Higgs boson composed of neutrinos?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Krog, Jens; Hill, Christopher T.

    2015-11-09

    We show that conventional Higgs compositeness conditions can be achieved by the running of large Higgs-Yukawa couplings involving right-handed neutrinos that become active at ~1013–1014 GeV. Together with a somewhat enhanced quartic coupling arising by a Higgs portal interaction to a dark matter sector, we can obtain a Higgs boson composed of neutrinos. Furthermore, this is a “next-to-minimal” dynamical electroweak symmetry breaking scheme.

  12. Toroidal Dipole Moment of a Massless Neutrino

    SciTech Connect (OSTI)

    Cabral-Rosetti, L. G.; Mondragon, M.; Perez, E. Reyes

    2009-04-20

    We obtain the toroidal dipole moment of a massless neutrino {tau}{sub v{sub I}}{sup M} using the results for the anapole moment of a massless Dirac neutrino a{sub v{sub I}}{sup D}, which was obtained in the context of the Standard Model of the electroweak interactions (SM)SU(2){sub L} x U(1){sub Y}.

  13. Neutrino

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    rapid rate. In addition to the studies presented here, analyses of neutral current elas- tic scattering and charged current + production are also in progress. MiniBooNE is...

  14. Neutrinos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a function of time. The fits to a constant and a line with a slope are consistent with a constant rate. which are simulated with the MiniBooNE detector Monte Carlo. Figure 3...

  15. Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aartsen, M. G.

    2016-01-20

    This study presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a function of angular separation. We also study their possible directional correlations using a likelihood method stacking the neutrino arrival directions and adopting different assumptions on the size of the UHECRmore » magnetic deflections. Finally, we perform another likelihood analysis stacking the UHECR directions and using a sample of through-going muon tracks optimized for neutrino point-source searches with sub-degree angular resolution. No indications of correlations at discovery level are obtained for any of the searches performed. The smallest of the p-values comes from the search for correlation between UHECRs with IceCube high-energy cascades, a result that should continue to be monitored.« less

  16. THE BNL SUPER NEUTRINO BEAM PROJECT

    SciTech Connect (OSTI)

    WENG,W-T.; RAPARIA,D.

    2004-12-02

    To determine the neutrino mixing amplitudes and phase accurately, as well as the CP violation parameters, a very long base line super neutrino beam facility is needed. This is possible due to the long distance and wideband nature of the neutrino beam for the observation of several oscillations from one species of the neutrino to the other [1,2]. BNL plans to upgrade the AGS proton beam from the current 0.14 MW to higher than 1.0 MW and beyond for such a neutrino facility which consists of three major subsystems. First is a 1.5 GeV superconducting linac to replace the booster as injector for the AGS, second is the performance upgrade for the AGS itself for the higher intensity and repetition rate, and finally is target and horn system for the neutrino production. The major contribution for the higher power is from the increase of the repetition rate of the AGS form 0.3 Hz to 2.5 Hz, with moderate increase from the intensity [3]. The design consideration to achieve high intensity and low losses for the linac and the AGS will be reviewed. The target horn design for high power operation and easy maintenance will also be presented.

  17. Light sterile neutrinos after BICEP-2

    SciTech Connect (OSTI)

    Archidiacono, Maria; Hannestad, Steen; Fornengo, Nicolao; Gariazzo, Stefano; Giunti, Carlo; Laveder, Marco E-mail: fornengo@to.infn.it E-mail: giunti@to.infn.it E-mail: marco.laveder@pd.infn.it

    2014-06-01

    The recent discovery of B-modes in the polarization pattern of the Cosmic Microwave Background by the BICEP2 experiment has important implications for neutrino physics. We revisit cosmological bounds on light sterile neutrinos and show that they are compatible with all current cosmological data provided that the mass is relatively low. Using CMB data, including BICEP-2, we find an upper bound of m{sub s} < 0.85 eV (2σ Confidence Level). This bound is strengthened to 0.48 eV when HST measurements of H{sub 0} are included. However, the inclusion of SZ cluster data from the Planck mission and weak gravitational measurements from the CFHTLenS project favours a non-zero sterile neutrino mass of 0.44{sup +0.11}{sub −0.16} eV. Short baseline neutrino oscillations, on the other hand, indicate a new mass state around 1.2 eV. This mass is highly incompatible with cosmological data if the sterile neutrino is fully thermalised (Δχ{sup 2} > 10). However, if the sterile neutrino only partly thermalises it can be compatible with all current data, both cosmological and terrestrial.

  18. Neutrino-4 experiment on the search for a sterile neutrino at the SM-3 reactor

    SciTech Connect (OSTI)

    Serebrov, A. P. Ivochkin, V. G.; Samoylov, R. M.; Fomin, A. K.; Zinoviev, V. G.; Neustroev, P. V.; Golovtsov, V. L.; Gruzinsky, N. V.; Solovey, V. A.; Chernyi, A. V.; Zherebtsov, O. M.; Martemyanov, V. P.; Tsinoev, V. G.; Tarasenkov, V. G.; Aleshin, V. I.; Petelin, A. L.; Pavlov, S. V.; Izhutov, A. L.; Sazontov, S. A.; Ryazanov, D. K.; and others

    2015-10-15

    In view of the possibility of the existence of a sterile neutrino, test measurements of the dependence of the reactor antineutrino flux on the distance from the reactor core has been performed on SM-2 reactor with the Neutrino-2 detector model in the range of 6–11 m. Prospects of the search for reactor antineutrinos at short distances have been discussed.

  19. The Million-Body Problem: Particle Simulations in Astrophysics

    ScienceCinema (OSTI)

    Rasio, Fred [Northwestern University

    2009-09-01

    Computer simulations using particles play a key role in astrophysics. They are widely used to study problems across the entire range of astrophysical scales, from the dynamics of stars, gaseous nebulae, and galaxies, to the formation of the largest-scale structures in the universe. The 'particles' can be anything from elementary particles to macroscopic fluid elements, entire stars, or even entire galaxies. Using particle simulations as a common thread, this talk will present an overview of computational astrophysics research currently done in our theory group at Northwestern. Topics will include stellar collisions and the gravothermal catastrophe in dense star clusters.

  20. Neutrinos' Instant Identity Changes Could Mean Big Things for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Neutrinos' Instant Identity Changes Could Mean Big Things for the Big Bang Neutrinos' Instant Identity Changes Could Mean Big Things for the Big Bang July 11, 2011 - 12:23pm ...

  1. OSTIblog Articles in the Long Baseline Neutrino Experiment Topic...

    Office of Scientific and Technical Information (OSTI)

    Long Baseline Neutrino Experiment Topic Mining for Gold, Neutrinos and the Neutrinoless ... The site of the former Homestake Mine was once one of the largest and deepest gold mines ...

  2. Large N (=3) Neutrinos and Random Matrix Theory (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Large N (3) Neutrinos and Random Matrix Theory Citation Details In-Document Search Title: Large N (3) Neutrinos and Random Matrix Theory You are accessing a ...

  3. Chemical Technology Division annual technical report 1997

    SciTech Connect (OSTI)

    1998-06-01

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials and electrified interfaces. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division`s activities during 1997 are presented.

  4. SUPERSONIC SHEAR INSTABILITIES IN ASTROPHYSICAL BOUNDARY LAYERS

    SciTech Connect (OSTI)

    Belyaev, Mikhail A.; Rafikov, Roman R., E-mail: rrr@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Ivy Lane, Princeton, NJ 08540 (United States)

    2012-06-20

    Disk accretion onto weakly magnetized astrophysical objects often proceeds via a boundary layer (BL) that forms near the object's surface, in which the rotation speed of the accreted gas changes rapidly. Here, we study the initial stages of formation for such a BL around a white dwarf or a young star by examining the hydrodynamical shear instabilities that may initiate mixing and momentum transport between the two fluids of different densities moving supersonically with respect to each other. We find that an initially laminar BL is unstable to two different kinds of instabilities. One is an instability of a supersonic vortex sheet (implying a discontinuous initial profile of the angular speed of the gas) in the presence of gravity, which we find to have a growth rate of order (but less than) the orbital frequency. The other is a sonic instability of a finite width, supersonic shear layer, which is similar to the Papaloizou-Pringle instability. It has a growth rate proportional to the shear inside the transition layer, which is of order the orbital frequency times the ratio of stellar radius to the BL thickness. For a BL that is thin compared to the radius of the star, the shear rate is much larger than the orbital frequency. Thus, we conclude that sonic instabilities play a dominant role in the initial stages of nonmagnetic BL formation and give rise to very fast mixing between disk gas and stellar fluid in the supersonic regime.

  5. MPI-AMRVAC FOR SOLAR AND ASTROPHYSICS

    SciTech Connect (OSTI)

    Porth, O.; Xia, C.; Hendrix, T.; Moschou, S. P.; Keppens, R.

    2014-09-01

    In this paper, we present an update to the open source MPI-AMRVAC simulation toolkit where we focus on solar and non-relativistic astrophysical magnetofluid dynamics. We highlight recent developments in terms of physics modules, such as hydrodynamics with dust coupling and the conservative implementation of Hall magnetohydrodynamics. A simple conservative high-order finite difference scheme that works in combination with all available physics modules is introduced and demonstrated with the example of monotonicity-preserving fifth-order reconstruction. Strong stability-preserving high-order Runge-Kutta time steppers are used to obtain stable evolutions in multi-dimensional applications, realizing up to fourth-order accuracy in space and time. With the new distinction between active and passive grid cells, MPI-AMRVAC is ideally suited to simulate evolutions where parts of the solution are controlled analytically or have a tendency to progress into or out of a stationary state. Typical test problems and representative applications are discussed with an outlook toward follow-up research. Finally, we discuss the parallel scaling of the code and demonstrate excellent weak scaling up to 30, 000 processors, allowing us to exploit modern peta-scale infrastructure.

  6. Physics Division progress report, January 1, 1993--December 31, 1993

    SciTech Connect (OSTI)

    Hollen, G.Y.; Schappert, G.T.

    1994-07-01

    This report discusses its following topics: Recent Weapons-Physics Experiments on the Pegasus II Pulsed Power Facility; Operation of a Large-Scale Plasma Source Ion Implantation Experiment; Production of Charm and Beauty Mesons at Fermilab Sudbury Neutrino Observatory; P-Division`s Essential Role in the Redirected Inertial Confinement Fusion Program; Trident Target Physics Program; Comparative Studies of Brain Activation with Magnetocephalography and Functional Magnetic Resonance Imaging; Cellular Communication, Interaction of G-Proteins, and Single-Photon Detection; Nuclear Magnetic Resonance Studies of Oxygen-doped La{sub 2}CuO{sub 4+{delta}} Thermoacoustic Engines; A Shipborne Raman Water-Vapor Lidar for the Central Pacific Experiment; Angara-5 Pinch Temperature Verification with Time-resolved Spectroscopy; Russian Collaborations on Megagauss Magnetic Fields and Pulsed-Power Applications; Studies of Energy Coupling from Underground Explosions; Trapping and Cooling Large Numbers of Antiprotons: A First Step Toward the Measurement of Gravity on Antimatter; and Nuclear-Energy Production Without a Long-Term High-Level Waste Stream.

  7. Everything under the sun: A review of solar neutrinos

    SciTech Connect (OSTI)

    Gann, Gabriel D. Orebi

    2015-07-15

    Solar neutrinos offer a unique opportunity to study the interaction of neutrinos with matter, a sensitive search for potential new physics effects, and a probe of solar structure and solar system formation. This paper describes the broad physics program addressed by solar neutrino studies, presents the current suite of experiments programs, and describes several potential future detectors that could address the open questions in this field. This paper is a summary of a talk presented at the Neutrino 2014 conference in Boston.

  8. Melvin Schwartz and the Discovery of the Muon Neutrino

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Melvin Schwartz and the Discovery of the Muon Neutrino Resources with Additional Information Melvin Schwartz Courtesy Brookhaven National Laboratory Melvin Schwartz was the co-winner of the 1988 Nobel Prize in Physics "for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino". 'In 1962, Schwartz, with Leon Lederman and Jack Steinberger ... discovered the muon neutrino at the Alternating Gradient Synchrotron

  9. Everything under the Sun: A review of solar neutrinos

    SciTech Connect (OSTI)

    Gann, Gabriel D. Orebi

    2015-07-15

    Solar neutrinos offer a unique opportunity to study the interaction of neutrinos with matter, a sensitive search for potential new physics effects, and a probe of solar structure and solar system formation. This paper describes the broad physics program addressed by solar neutrino studies, presents the current suite of experiments programs, and describes several potential future detectors that could address the open questions in this field. This paper is a summary of a talk presented at the Neutrino 2014 conference in Boston.

  10. Hawaii Department of Transportation Highways Division | Open...

    Open Energy Info (EERE)

    Hawaii Department of Transportation Highways Division Address: 869 Punchbowl Street, Room 513 Place: Honolulu, Hawaii Zip: 96809 Website: hawaii.govdothighways Coordinates:...

  11. Division Director, Chemical Sciences, Geosciences and Biosciences

    Broader source: Energy.gov [DOE]

    The Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences and Biosciences Division is seeking a motivated and highly qualified individual to...

  12. Amur Energy Division | Open Energy Information

    Open Energy Info (EERE)

    Division is a company located in Spain. Related Links http:findarticles.comparticlesmim5CNKis2007Jan4ain24998390 http:www.businesswirenet.orgprindex.phpid...

  13. TO: Procurement Directors FROM: Director, Policy Division

    Broader source: Energy.gov (indexed) [DOE]

    4 DATE: April 7, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT:...

  14. TO: Procurement Directors FROM: Director, Policy Division

    Energy Savers [EERE]

    POLICY FLASH 2011-56 DATE: March 16, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance...

  15. Colorado Air Pollution Control Division - Construction Permits...

    Open Energy Info (EERE)

    Pollution Control Division - Construction Permits Forms and Air Pollutant Emission Notices (APENs) Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site:...

  16. Visualization Gallery from the Computational Research Division...

    Office of Scientific and Technical Information (OSTI)

    Visualization Gallery from the Computational Research Division at Lawrence Berkeley ... Data from Enhanced Geothermal Systems; 3) PointCloudXplore: Visualization and ...

  17. Workforce Analysis and Planning Division (HC-52)

    Broader source: Energy.gov [DOE]

    This division provides strategic direction guidance and advice through analysis of budget and workforce projections and plans, congressional mandates, administration goals, Departmental priorities...

  18. Computing and Computational Sciences Directorate - Divisions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CCSD Divisions Computational Sciences and Engineering Computer Sciences and Mathematics Information Technolgoy Services Joint Institute for Computational Sciences National Center for Computational Sciences

  19. High Energy Physics Division, ANL Lattice QCD

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy Physics Division, ANL Lattice QCD in extreme environments D. K. Sinclair (HEP, Argonne) J. B. Kogut (Physics, Illinois) D. ... At large I and high temperature we observe ...

  20. DOE Human Resources Management Division - Hanford Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    About Hanford Cleanup Hanford History Hanford Site Wide Programs DOE Human Resources ... DOE Human Resources Management Division Email Email Page | Print Print Page | Text ...

  1. New Prospects in High Energy Astrophysics (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    discoveries using TeV, X-ray and radio telescopes as well as Ultra High Energy Cosmic Ray arrays are leading to new insights into longstanding puzzles in high energy astrophysics. ...

  2. Status and Aims of the DUMAND Neutrino Project: the Ocean as a Neutrino Detector

    DOE R&D Accomplishments [OSTI]

    Roberts, A.; Blood, H.; Learned, J.; Reines, F.

    1976-07-01

    The possibility of using the ocean as a neutrino detector is considered. Neutrino-produced interactions result in charged particles that generate Cherenkov radiation in the water, which can be detected by light-gathering equipment and photomultipliers. The properties of the ocean as seen from this standpoint are critically examined, and the advantages and disadvantages pointed out. Possible uses for such a neutrino detector include (1) the detection of neutrinos emitted in gravitational collapse of stars (supernova production), not only in our own galaxy, but in other galaxies up to perhaps twenty-million light-years away, (2) the extension of high-energy neutrino physics, as currently practiced up to 200 GeV at high-energy accelerators, to energies up to 50 times higher, using neutrinos generated in the atmosphere by cosmic rays, and (3) the possible detection of neutrinos produced by cosmic-ray interactions outside the earth`s atmosphere. The technology for such an undertaking seems to be within reach.

  3. Particle Acceleration in Shocks: From Astrophysics to Laboratory In Silico

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | Argonne Leadership Computing Facility Credit: Frederico Fiuza, Lawrence Livermore National Laboratory Particle Acceleration in Shocks: From Astrophysics to Laboratory In Silico PI Name: Frederico Fiuza PI Email: fiuza1@llnl.gov Institution: Lawrence Livermore National Laboratory Allocation Program: INCITE Allocation Hours at ALCF: 110 Million Year: 2015 Research Domain: Physics Particle acceleration in astrophysical shocks is believed to be one of the most important sources of energetic

  4. Honey, I Shrunk the Plasma: Studying Astrophysical Processes in Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Experiments | Princeton Plasma Physics Lab February 14, 2015, 9:30am to 11:00am Science On Saturday MBG Auditorium Honey, I Shrunk the Plasma: Studying Astrophysical Processes in Laboratory Experiments Dr. Clayton Myers, Associate Research Physicist PPPL Abstract: PDF icon Myers.pdf Science on Saturday, 14FEB2015, "Honey, I Shrunk the Plasma: Studying Astrophysical Processess in Laboratory Experiments", Dr. Clayton Myers, PPPL Contact Information Website: Science on Saturday

  5. Directory - Center for Plasma in the Laboratory and Astrophysics - UW

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Madison Physics Department Directory UW Madison Center for Plasma in the Laboratory and Astrophysics Directory CPLA Home - Experiments Madison Symmetric Torus Madsion Dynamo Experiment Rotating Wall Machine Plasma-Couette Experiment Madison Plasma Dynamo Experiment - Theory Groups MHD Turbulence Transport in Fusion Devices Plasma Astrophysics RFP Theory - Multi-Institutional Centers Center for Magnetic Self Organization Center for Theory and Computation Center for Momentum Transport and Flow

  6. Research in nuclear astrophysics: Stellar collapse and supernovae

    SciTech Connect (OSTI)

    Lattimer, J.M.; Yahil, A.

    1992-01-01

    This progress report describes the nuclear astrophysics research activities in the Earth and Space Sciences Department at Stony Brook during the last year. Our research focused on three aspects of nuclear astrophysics: (1) the equation of state of hot, dense matter, (2) the origin of supernovae and neutron stars, (3) the early cooling epoch of neutron stars. The following contains detailed reports which summarize each completed project.

  7. Present and Future Computing Requirements Radiative Transfer of Astrophysical Explosions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Requirements Radiative Transfer of Astrophysical Explosions Daniel Kasen (UCB/LBNL) SciDAC computational astrophysics consortium Stan Woosley, Ann Almgren, John Bell, Haitao Ma, Peter Nugent, Rollin Thomas, Weiquin Zhang, Adam Burrows, Jason Nordhaus, Louis Howell, Mike Zingale topics and open questions * thermonuclear supernova: What are the progenitors: 1 or 2 white dwarfs? How does the nuclear runaway ignite and develop? How regular are these "standard candles" for cosmology? * core

  8. Observing Muon Neutrino to Electron Neutrino Oscillations in the NOνA Experiment

    SciTech Connect (OSTI)

    Xin, Tian

    2016-01-01

    Neutrino oscillations offers an insight on new physics beyond the Standard Model. The three mixing angles (θ12, θ13 and θ23) and the two mass splittings (Δm2 and Αm2 ) have been measured by different neutrino oscillation experiments. Some other parameters including the mass ordering of different neutrino mass eigenstates and the CP violation phase are still unknown. NOνA is a long-baseline accelerator neutrino experiment, using neutrinos from the NuMI beam at Fermilab. The experiment is equipped with two functionally identical detectors about 810 kilometers apart and 14 mrad off the beam axis. In this configuration, the muon neutrinos from the NuMI beam reach the disappearance maximum in the far detector and a small fraction of that oscillates into electron neutrinos. The sensitivity to the mass ordering and CP viola- tion phase determination is greately enhanced. This thesis presents the νeappearance analysis using the neutrino data collected with the NOνA experiment between February 2014 and May 2015, which corresponds to 3.45 ×1020 protons-on-target (POT). The νe appearance analysis is performed by comparing the observed νe CC-like events to the estimated background at the far detector. The total background is predicted to be 0.95 events with 0.89 originated from beam events and 0.06 from cosmic ray events. The beam background is obtained by extrapolating near detector data through different oscillation channels, while the cosmic ray background is calculated based on out-of-time NuMI trigger data. A total of 6 electron neutrino candidates are observed in the end at the far detector which represents 3.3 σ excess over the predicted background. The NOνA result disfavors inverted mass hierarchy for δcp ϵ [0, 0.6π] at 90% C.L.

  9. The Planck Surveyor mission: astrophysical prospects

    SciTech Connect (OSTI)

    De Zotti, Gianfranco; Toffolatti, Luigi Toffolatti, Luigi Partridge, R. Bruce

    1999-05-01

    Although the Planck Surveyor mission is optimized to map the cosmic microwave background anisotropies, it will also provide extremely valuable information on astrophysical phenomena. We review our present understanding of Galactic and extragalactic foregrounds relevant to the mission and discuss on one side, Planck{close_quote}s impact on the study of their properties and, on the other side, to what extent foreground contamination may affect Planck{close_quote}s ability to accurately determine cosmological parameters. Planck{close_quote}s multifrequency surveys will be unique in their coverage of large areas of the sky (actually, of the full sky); this will extend by two or more orders of magnitude the flux density interval over which mm/sub-mm counts of extragalactic sources can be determined by instruments already available (like SCUBA) or planned for the next decade (like the LSA-MMA or the space mission FIRST), which go much deeper but over very limited areas. Planck will thus provide essential complementary information on the epoch-dependent luminosity functions. Bright radio sources will be studied over a poorly explored frequency range where spectral signatures, essential to understand the physical processes that are going on, show up. The Sunyaev-Zeldovich effect, with its extremely rich information content, will be observed in the direction of a large number of rich clusters of Galaxies. Thanks again to its all sky coverage, Planck will provide unique information on the structure and on the emission properties of the interstellar medium in the Galaxy. At the same time, the foregrounds are unlikely to substantially limit Planck{close_quote}s ability to measure the cosmological signals. Even measurements of polarization of the primordial Cosmic Microwave background fluctuations appear to be feasible. {copyright} {ital 1999 American Institute of Physics.}

  10. Theoretical Research at the High Energy Frontier: Cosmology, Neutrinos, and Beyond

    SciTech Connect (OSTI)

    Krauss, Lawrence M; Vachaspati, Tanmay; Parikh, Maulik

    2013-03-06

    The DOE theory group grew from 2009-2012 from a single investigator, Lawrence Krauss, the PI on the grant, to include 3 faculty (with the addition of Maulik Parikh and Tanmay Vachaspati), and a postdoc covered by the grant, as well as partial support for a graduate student. The group has explored issues ranging from gravity and quantum field theory to topological defects, energy conditions in general relativity, primordial magnetic fields, neutrino astrophysics, quantum phases, gravitational waves from the early universe, dark matter detection schemes, signatures for dark matter at the LHC, and indirect astrophysical signatures for dark matter. In addition, we have run active international workshops each year, as well as a regular visitor program. As well, the PI's outreach activities, including popular books and articles, and columns for newspapers and magazines, as well as television and radio appearances have helped raise the profile of high energy physics internationally. The postdocs supported by the grant, James Dent and Roman Buniy have moved on successfully to a faculty positions in Louisiana and California.

  11. LUNASKA experiments using the Australia Telescope Compact Array to search for ultrahigh energy neutrinos and develop technology for the lunar Cherenkov technique

    SciTech Connect (OSTI)

    James, C. W.; Protheroe, R. J.; Ekers, R. D.; Phillips, C. J.; Roberts, P.; Alvarez-Muniz, J.; Bray, J. D.; McFadden, R. A.

    2010-02-15

    We describe the design, performance, sensitivity and results of our recent experiments using the Australia Telescope Compact Array (ATCA) for lunar Cherenkov observations with a very wide (600 MHz) bandwidth and nanosecond timing, including a limit on an isotropic neutrino flux. We also make a first estimate of the effects of small-scale surface roughness on the effective experimental aperture, finding that contrary to expectations, such roughness will act to increase the detectability of near-surface events over the neutrino energy-range at which our experiment is most sensitive (though distortions to the time-domain pulse profile may make identification more difficult). The aim of our 'Lunar UHE Neutrino Astrophysics using the Square Kilometre Array' (LUNASKA) project is to develop the lunar Cherenkov technique of using terrestrial radio telescope arrays for ultrahigh energy (UHE) cosmic ray (CR) and neutrino detection, and, in particular, to prepare for using the Square Kilometre Array (SKA) and its path-finders such as the Australian SKA Pathfinder (ASKAP) and the Low Frequency Array (LOFAR) for lunar Cherenkov experiments.

  12. Solar neutrino physics in the nineties

    SciTech Connect (OSTI)

    Wilkerson, J.F.

    1990-12-31

    The decade of the 1990`s should prove to be landmark period for the study of solar neutrino physics. Current observations show 2--3 times fewer neutrinos coming from the sun than are theoretically expected. As we enter the decade, new experiments are poised to attempt and discover whether this deficit is a problem with our understanding of how the sun works, is a hint of new neutrino properties beyond those predicted by the standard model of particle physics, or perhaps a combination of both. This paper will briefly review the current status of the field and point out how future measurements should help solve this interesting puzzle. 11 refs., 3 figs., 1 tab.

  13. Quark-hadron duality in neutrino scattering

    SciTech Connect (OSTI)

    W. Melnitchouk; O. Lalakulich; E. A. Paschos

    2006-07-24

    We present a phenomenological model of the quark-hadron transition in neutrino-nucleon scattering. Using recently extracted weak nucleon transition form factors, we investigate the extent to which local and global quark-hadron duality is applicable in the neutrino F{sub 1}, F{sub 2} and F{sub 3} structure functions, and contrast this with duality in electron scattering. Our findings suggest that duality works relatively well for neutrino-nucleon scattering for the F{sub 2} and F{sub 3} structure functions, but not as well for F{sub 1}. We also calculate the quasi-elastic, resonance and deep inelastic contributions to the Adler sum rule, and find it to be satisfied to within 10% for 0.5 < Q{sup 2} < 2 GeV{sup 2}.

  14. Westinghouse Advanced Reactors Division Plutonium Fuel Laboratories

    Office of Legacy Management (LM)

    Radiological Condition of the Westinghouse Advanced Reactors Division Plutonium Fuel Laboratories Cheswick, Pennsylvania -. -, -- AGENCY: Office of Operational Safety, Department of Energy ACTION: Notice of Availability of Archival Information Package SUMMARY: The Office of Operational Safety of the Department of Energy (DOE) has, reviewed documentation relating to the decontamination and decommissioning operations conducted at the Westinghouse Advanced Reactor Division laboratories (buildings 7

  15. Materials Sciences Division 1990 annual report

    SciTech Connect (OSTI)

    Not Available

    1990-12-31

    This report is the Materials Sciences Division`s annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

  16. Precision Measurements of Long-Baseline Neutrino Oscillation at LBNF

    SciTech Connect (OSTI)

    Worcester, Elizabeth

    2015-08-06

    In a long-baseline neutrino oscillation experiment, the primary physics objectives are to determine the neutrino mass hierarchy, to determine the octant of the neutrino mixing angle θ23, to search for CP violation in neutrino oscillation, and to precisely measure the size of any CP-violating effect that is discovered. This presentation provides a brief introduction to these measurements and reports on efforts to optimize the design of a long-baseline neutrino oscillation experiment, the status of LBNE, and the transition to an international collaboration at LBNF.

  17. Matter effects in active-sterile solar neutrino oscillations

    SciTech Connect (OSTI)

    Giunti, C.; Li, Y. F.

    2009-12-01

    The matter effects for solar neutrino oscillations are studied in a general scheme with an arbitrary number of sterile neutrinos, without any constraint on the mixing, assuming only a realistic hierarchy of neutrino squared-mass differences in which the smallest squared-mass difference is effective in solar neutrino oscillations. The validity of the analytic results are illustrated with a numerical solution of the evolution equation in three examples of the possible mixing matrix in the simplest case of four-neutrino mixing.

  18. Precision Measurements of Long-Baseline Neutrino Oscillation at LBNF

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Worcester, Elizabeth

    2015-08-06

    In a long-baseline neutrino oscillation experiment, the primary physics objectives are to determine the neutrino mass hierarchy, to determine the octant of the neutrino mixing angle θ23, to search for CP violation in neutrino oscillation, and to precisely measure the size of any CP-violating effect that is discovered. This presentation provides a brief introduction to these measurements and reports on efforts to optimize the design of a long-baseline neutrino oscillation experiment, the status of LBNE, and the transition to an international collaboration at LBNF.

  19. Electron Neutrino CCQE Data Release Page

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Electron Neutrino CCQE Data Release Page Measurement of electron neutrino quasielastic and quasielastic-like scattering on hydrocarbon at ⟨Eν⟩ = 3.6 GeV Phys. Rev. Lett. 116, 081802 (2016) and hep-ex/1509.05729 Data Ancillary files for this result are available at http://arxiv.org/src/1509.05729v6/anc The available data files are: Cross Section as a function of Electron Angle Cross Section as a function of Electron Energy Cross Section as a function of Q2 Covariance Matrix as a function of

  20. Neutrino oscillations in a turbulent plasma

    SciTech Connect (OSTI)

    Mendona, J. T.; Haas, F.

    2013-07-15

    A new model for the joint neutrino flavor and plasma oscillations is introduced, in terms of the dynamics of the neutrino flavor polarization vector in a plasma background. Fundamental solutions are found for both time-invariant and time-dependent media, considering slow and fast variations of the electron plasma density. The model is shown to be described by a generalized Hamiltonian formalism. In the case of a broad spectrum of electron plasma waves, a statistical approach indicates the shift of both equilibrium value and frequency oscillation of flavor coherence, due to the existence of a turbulent plasma background.

  1. Neutrinoless double beta decay and neutrino masses

    SciTech Connect (OSTI)

    Duerr, Michael [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)

    2012-07-27

    Neutrinoless double beta decay (0{nu}{beta}{beta}) is a promising test for lepton number violating physics beyond the standard model (SM) of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular, we will discuss the relation between 0{nu}{beta}{beta} and Majorana neutrino masses provided by the so-called Schechter-Valle theorem in a quantitative way. Furthermore, we will present an experimental cross check to discriminate 0{nu}{beta}{beta} from unknown nuclear background using only one isotope, i.e., within one experiment.

  2. Breakthrough Prize Honors Neutrino Research | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Breakthrough Prize Honors Neutrino Research The Daya Bay and Ling Ao nuclear power reactors, pictured here behind Bob McKeown, are located roughly 55 kilometers from Hong Kong. The Daya Bay and Ling Ao nuclear power reactors, pictured here behind Bob McKeown, are located roughly 55 kilometers from Hong Kong. Breakthrough Prize Honors Neutrino Research He missed the 'glitzy Oscars for science,' but that's OK with Bob McKeown. McKeown is the Governor's Distinguished CEBAF Professor in William

  3. 1998 Chemical Technology Division Annual Technical Report.

    SciTech Connect (OSTI)

    Ackerman, J.P.; Einziger, R.E.; Gay, E.C.; Green, D.W.; Miller, J.F.

    1999-08-06

    The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division's activities during 1998 are presented.

  4. Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report, Volume 2: The Physics Program for DUNE at LBNF

    SciTech Connect (OSTI)

    None, None

    2015-11-25

    The Physics Program for the Deep Underground Neutrino Experiment (DUNE) at the Fermilab Long-Baseline Neutrino Facility (LBNF) is described.

  5. A Nobel for Neutrinos: Sudbury Neutrino Observatory | U.S. DOE...

    Office of Science (SC) Website

    produced by neutrino interactions in the heavy water with which the vessel will be filled. ... He proposed a detector based on heavy water that could detect all flavors equally. The ...

  6. FEASIBILITY STUDY II OF A MUON BASED NEUTRINO SOURCE.

    SciTech Connect (OSTI)

    GALLARDO,J.C.; OZAKI,S.; PALMER,R.B.; ZISMAN,M.

    2001-06-30

    The concept of using a muon storage ring to provide a well characterized beam of muon and electron neutrinos (a Neutrino Factory) has been under study for a number of years now at various laboratories throughout the world. The physics program of a Neutrino Factoryis focused on the relatively unexplored neutrino sector. In conjunction with a detector located a suitable distance from the neutrino source, the facility would make valuable contributions to the study of neutrino masses and lepton mixing. A Neutrino Factory is expected to improve the measurement accuracy of sin{sup 2}(2{theta}{sub 23}) and {Delta}m{sup 2}{sub 32} and provide measurements of sin{sup 2}(2{theta}{sub 13}) and the sign of {Delta}m{sup 2}{sub 32}. It may also be able to measure CP violation in the lepton sector.

  7. Measurement of the Cosmic Ray and Neutrino-Induced Muon Flux at the Sudbury Neutrino Observatory

    DOE R&D Accomplishments [OSTI]

    SNO collaboration; Aharmim, B.; Ahmed, S. N.; Andersen, T. C.; Anthony, A. E.; Barros, N.; Beier, E. W.; Bellerive, A.; Beltran, B.; Bergevin, M.; Biller, S. D.; Boudjemline, K.; Boulay, M. G.; Burritt, T. H.; Cai, B.; Chan, Y. D.; Chen, M.; Chon, M. C.; Cleveland, B. T.; Cox-Mobrand, G. A.; Currat, C. A.; Dai, X.; Dalnoki-Veress, F.; Deng, H.; Detwiler, J.; Doe, P. J.; Dosanjh, R. S.; Doucas, G.; Drouin, P.-L.; Duncan, F. A.; Dunford, M.; Elliott, S. R.; Evans, H. C.; Ewan, G. T.; Farine, J.; Fergani, H.; Fleurot, F.; Ford, R. J.; Formaggio, J. A.; Gagnon, N.; Goon, J. TM.; Grant, D. R.; Guillian, E.; Habib, S.; Hahn, R. L.; Hallin, A. L.; Hallman, E. D.; Hargrove, C. K.; Harvey, P. J.; Harvey, P. J.; Heeger, K. M.; Heintzelman, W. J.; Heise, J.; Helmer, R. L.; Hemingway, R. J.; Henning, R.; Hime, A.; Howard, C.; Howe, M. A.; Huang, M.; Jamieson, B.; Jelley, N. A.; Klein, J. R.; Kos, M.; Kruger, A.; Kraus, C.; Krauss, C. B.; Kutter, T.; Kyba, C. C. M.; Lange, R.; Law, J.; Lawson, I. T.; Lesko, K. T.; Leslie, J. R.; Levine, I.; Loach, J. C.; Luoma, S.; MacLellan, R.; Majerus, S.; Mak, H. B.; Maneira, J.; Marino, A. D.; Martin, R.; McCauley, N.; McDonald, A. B.; McGee, S.; Mifflin, C.; Miller, M. L.; Monreal, B.; Monroe, J.; Noble, A. J.; Oblath, N. S.; Okada, C. E.; O'Keeffe, H. M.; Opachich, Y.; Orebi Gann, G. D.; Oser, S. M.; Ott, R. A.; Peeters, S. J. M.; Poon, A. W. P.; Prior, G.; Rielage, K.; Robertson, B. C.; Robertson, R. G. H.; Rollin, E.; Schwendener, M. H.; Secrest, J. A.; Seibert, S. R.; Simard, O.; Simpson, J. J.; Sinclair, D.; Skensved, P.; Smith, M. W. E.; Sonley, T. J.; Steiger, T. D.; Stonehill, L. C.; Tagg, N.; Tesic, G.; Tolich, N.; Tsui, T.; Van de Water, R. G.; VanDevender, B. A.; Virtue, C. J.; Waller, D.; Waltham, C. E.; Wan Chan Tseung, H.; Wark, D. L.; Watson, P.; Wendland, J.; West, N.; Wilkerson, J. F.; Wilson, J. R.; Wouters, J. M.; Wright, A.; Yeh, M.; Zhang, F.; Zuber, K.

    2009-07-10

    Results are reported on the measurement of the atmospheric neutrino-induced muon flux at a depth of 2 kilometers below the Earth's surface from 1229 days of operation of the Sudbury Neutrino Observatory (SNO). By measuring the flux of through-going muons as a function of zenith angle, the SNO experiment can distinguish between the oscillated and un-oscillated portion of the neutrino flux. A total of 514 muon-like events are measured between -1 {le} cos {theta}{sub zenith} 0.4 in a total exposure of 2.30 x 10{sup 14} cm{sup 2} s. The measured flux normalization is 1.22 {+-} 0.09 times the Bartol three-dimensional flux prediction. This is the first measurement of the neutrino-induced flux where neutrino oscillations are minimized. The zenith distribution is consistent with previously measured atmospheric neutrino oscillation parameters. The cosmic ray muon flux at SNO with zenith angle cos {theta}{sub zenith} > 0.4 is measured to be (3.31 {+-} 0.01 (stat.) {+-} 0.09 (sys.)) x 10{sup -10} {micro}/s/cm{sup 2}.

  8. NOvA: Exploring Neutrino Mysteries

    ScienceCinema (OSTI)

    Vahle, Tricia; Messier, Mark

    2014-08-12

    Neutrinos are a mystery to physicists. They exist in three different flavors and mass states and may be able to give hints about the origins of the matter-dominated universe. A new long-baseline experiment led by Fermilab called NOvA may provide some answers.

  9. Leptonic mixing, family symmetries, and neutrino phenomenology

    SciTech Connect (OSTI)

    Medeiros Varzielas, I. de [Departamento de Fisica and Centro de Fisica Teorica de Particulas, Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal); Fakultaet fuer Physik, Technische Universitaet Dortmund D-44221 Dortmund (Germany); Gonzalez Felipe, R. [Departamento de Fisica and Centro de Fisica Teorica de Particulas, Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal); Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emidio Navarro, 1959-007 Lisboa (Portugal); Serodio, H. [Departamento de Fisica and Centro de Fisica Teorica de Particulas, Instituto Superior Tecnico, Avenida Rovisco Pais, 1049-001 Lisboa (Portugal)

    2011-02-01

    Tribimaximal leptonic mixing is a mass-independent mixing scheme consistent with the present solar and atmospheric neutrino data. By conveniently decomposing the effective neutrino mass matrix associated to it, we derive generic predictions in terms of the parameters governing the neutrino masses. We extend this phenomenological analysis to other mass-independent mixing schemes which are related to the tribimaximal form by a unitary transformation. We classify models that produce tribimaximal leptonic mixing through the group structure of their family symmetries in order to point out that there is often a direct connection between the group structure and the phenomenological analysis. The type of seesaw mechanism responsible for neutrino masses plays a role here, as it restricts the choices of family representations and affects the viability of leptogenesis. We also present a recipe to generalize a given tribimaximal model to an associated model with a different mass-independent mixing scheme, which preserves the connection between the group structure and phenomenology as in the original model. This procedure is explicitly illustrated by constructing toy models with the transpose tribimaximal, bimaximal, golden ratio, and hexagonal leptonic mixing patterns.

  10. Report on the Brookhaven Solar Neutrino Experiment

    DOE R&D Accomplishments [OSTI]

    Davis, R. Jr.; Evans, J. C. Jr.

    1976-09-22

    This report is intended as a brief statement of the recent developments and results of the Brookhaven Solar Neutrino Experiment communicated through Professor G. Kocharov to the Leningrad conference on active processes on the sun and the solar neutrino problem. The report summarizes the results of experiments performed over a period of 6 years, from April 1970 to January 1976. Neutrino detection depends upon the neutrino capture reaction /sup 37/Cl(..nu..,e/sup -/)/sup 37/Ar producing the isotope /sup 37/Ar (half life of 35 days). The detector contains 3.8 x 10/sup 5/ liters of C/sub 2/Cl/sub 4/ (2.2 x 10/sup 30/ atoms of /sup 37/Cl) and is located at a depth of 4400 meters of water equivalent (m.w.e.) in the Homestake Gold Mine at Lead, South Dakota, U.S.A. The procedures for extracting /sup 37/Ar and the counting techniques used were described in previous reports. The entire recovered argon sample was counted in a small gas proportional counter. Argon-37 decay events were characterized by the energy of the Auger electrons emitted following the electron capture decay and by the rise-time of the pulse. Counting measurements were continued for a period sufficiently long to observe the decay of /sup 37/Ar.

  11. Earth Sciences Division collected abstracts: 1979

    SciTech Connect (OSTI)

    Henry, A.L.; Schwartz, L.L.

    1980-04-30

    This report is a compilation of abstracts of papers, internal reports, and talks presented during 1979 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore Laboratory. The arrangement is alphabetical (by author). For a given report, a bibliographic reference appears under the name of each coauthor, but the abstract iself is given only under the name of the first author or the first Earth Sciences Division author. A topical index at the end of the report provides useful cross references, while indicating major areas of research interest in the Earth Sciences Division.

  12. Biology and Medicine Division: Annual report 1986

    SciTech Connect (OSTI)

    Not Available

    1987-04-01

    The Biology and Medicine Division continues to make important contributions in scientific areas in which it has a long-established leadership role. For 50 years the Division has pioneered in the application of radioisotopes and charged particles to biology and medicine. There is a growing emphasis on cellular and molecular applications in the work of all the Division's research groups. The powerful tools of genetic engineering, the use of recombinant products, the analytical application of DNA probes, and the use of restriction fragment length polymorphic DNA are described and proposed for increasing use in the future.

  13. Chemical Sciences Division annual report 1994

    SciTech Connect (OSTI)

    1995-06-01

    The division is one of ten LBL research divisions. It is composed of individual research groups organized into 5 scientific areas: chemical physics, inorganic/organometallic chemistry, actinide chemistry, atomic physics, and chemical engineering. Studies include structure and reactivity of critical reaction intermediates, transients and dynamics of elementary chemical reactions, and heterogeneous and homogeneous catalysis. Work for others included studies of superconducting properties of high-{Tc} oxides. In FY 1994, the division neared completion of two end-stations and a beamline for the Advanced Light Source, which will be used for combustion and other studies. This document presents summaries of the studies.

  14. Chemical and Laser Sciences Division annual report 1989

    SciTech Connect (OSTI)

    Haines, N.

    1990-06-01

    The Chemical and Laser Sciences Division Annual Report includes articles describing representative research and development activities within the Division, as well as major programs to which the Division makes significant contributions.

  15. Scientific Opportunities with the Long-Baseline Neutrino Experiment

    SciTech Connect (OSTI)

    Adams, C.; et al.,

    2013-07-28

    In this document, we describe the wealth of science opportunities and capabilities of LBNE, the Long-Baseline Neutrino Experiment. LBNE has been developed to provide a unique and compelling program for the exploration of key questions at the forefront of particle physics. Chief among the discovery opportunities are observation of CP symmetry violation in neutrino mixing, resolution of the neutrino mass hierarchy, determination of maximal or near-maximal mixing in neutrinos, searches for nucleon decay signatures, and detailed studies of neutrino bursts from galactic supernovae. To fulfill these and other goals as a world-class facility, LBNE is conceived around four central components: (1) a new, intense wide-band neutrino source at Fermilab, (2) a fine-grained `near' neutrino detector just downstream of the source, (3) the Sanford Underground Research Facility (SURF) in Lead, South Dakota at an optimal distance (~1300 km) from the neutrino source, and (4) a massive liquid argon time-projection chamber (LArTPC) deployed there as a 'far' detector. The facilities envisioned are expected to enable many other science opportunities due to the high event rates and excellent detector resolution from beam neutrinos in the near detector and atmospheric neutrinos in the far detector. This is a mature, well developed, world class experiment whose relevance, importance, and probability of unearthing critical and exciting physics has increased with time.

  16. Applications of the Trojan Horse method in nuclear astrophysics

    SciTech Connect (OSTI)

    Spitaleri, Claudio

    2015-02-24

    The study of the energy production in stars and related nucleosyntesis processes requires increasingly precise knowledge of the nuclear reaction cross section and reaction rates at interaction energy. In order to overcome the experimental difficulties, arising from small cross-sections involved in charge particle induced reactions at astrophysical energies, and from the presence of electron screening, it was necessary to introduce indirect methods. Trough these methods it is possible to measure cross sections at very small energies and retrieve information on electron screening effect when ultra-low energy direct measurements are available. The Trojan Horse Method (THM) represents the indirect technique to determine the bare nucleus astrophysical S-factor for reactions between charged particles at astrophysical energies. The basic theory of the THM is discussed in the case of non-resonant.

  17. Experimental astrophysics with high power lasers and Z pinches

    SciTech Connect (OSTI)

    Remington, B A; Drake, R P; Ryutov, D D

    2004-12-10

    With the advent of high energy density (HED) experimental facilities, such as high-energy lasers and fast Z-pinch, pulsed-power facilities, mm-scale quantities of matter can be placed in extreme states of density, temperature, and/or velocity. This has enabled the emergence of a new class of experimental science, HED laboratory astrophysics, wherein the properties of matter and the processes that occur under extreme astrophysical conditions can be examined in the laboratory. Areas particularly suitable to this class of experimental astrophysics include the study of opacities relevant to stellar interiors; equations of state relevant to planetary interiors; strong shock driven nonlinear hydrodynamics and radiative dynamics, relevant to supernova explosions and subsequent evolution; protostellar jets and high Mach-number flows; radiatively driven molecular clouds and nonlinear photoevaporation front dynamics; and photoionized plasmas relevant to accretion disks around compact objects, such as black holes and neutron stars.

  18. Computational Astrophysics Consortium, University of Minnesota, Final Report

    SciTech Connect (OSTI)

    Heger, Alexander

    2015-03-26

    During its six year duration the Computational Astrophysics consortium helped to train the next generation of scientists in computational and nuclear astrophysics. A total of five graduate students were supported by the grant at UMN. The major advances at UMN were in the use, testing, and contribution to development of the CASTRO that efficiently scales on over 100,000 CPUs. At UMN it was used for modeling of thermonuclear supernovae (pair instability and supermassive stars) and core-collapse supernovae as well as the final phases of their progenitors, as well as for x-ray bursts from accreting neutron stars. Important secondary advances in the field of nuclear astrophysics included a better understanding of the evolution of massive stars and the origin of the elements. The research resulted in more than 50 publications.

  19. The halo model in a massive neutrino cosmology

    SciTech Connect (OSTI)

    Massara, Elena; Villaescusa-Navarro, Francisco; Viel, Matteo E-mail: villaescusa@oats.inaf.it

    2014-12-01

    We provide a quantitative analysis of the halo model in the context of massive neutrino cosmologies. We discuss all the ingredients necessary to model the non-linear matter and cold dark matter power spectra and compare with the results of N-body simulations that incorporate massive neutrinos. Our neutrino halo model is able to capture the non-linear behavior of matter clustering with a ?20% accuracy up to very non-linear scales of k=10 h/Mpc (which would be affected by baryon physics). The largest discrepancies arise in the range k=0.51 h/Mpc where the 1-halo and 2-halo terms are comparable and are present also in a massless neutrino cosmology. However, at scales k<0.2 h/Mpc our neutrino halo model agrees with the results of N-body simulations at the level of 8% for total neutrino masses of <0.3 eV. We also model the neutrino non-linear density field as a sum of a linear and clustered component and predict the neutrino power spectrum and the cold dark matter-neutrino cross-power spectrum up to k=1 h/Mpc with ?30% accuracy. For masses below 0.15 eV the neutrino halo model captures the neutrino induced suppression, casted in terms of matter power ratios between massive and massless scenarios, with a 2% agreement with the results of N-body/neutrino simulations. Finally, we provide a simple application of the halo model: the computation of the clustering of galaxies, in massless and massive neutrinos cosmologies, using a simple Halo Occupation Distribution scheme and our halo model extension.

  20. Division, NN-43, Office of Arms Control

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 10 CFR Ch. III (1-1-10 Edition) 810.14 Division, NN-43, Office of Arms Control and ... (nuclear safety man- agement); 10 CFR part 835 (occupational ra- diation protection); and ...

  1. Director, Division of Energy Market Oversight

    Broader source: Energy.gov [DOE]

    The Federal Energy Regulatory Commission is looking for an experienced senior level executive to serve as the Director, Division of Energy Market Oversight. The Director plans and implements the...

  2. DNP 2015: APS Division of Nuclear Physics

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New Mexico Annual Fall Meeting of the APS Division of Nuclear Physics October 28-31, 2015 Convention Center in downtown Santa Fe, NM Timetable for all workshops, regular and...

  3. Chemical Sciences Division: Annual report 1992

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    The Chemical Sciences Division (CSD) is one of twelve research Divisions of the Lawrence Berkeley Laboratory, a Department of Energy National Laboratory. The CSD is composed of individual groups and research programs that are organized into five scientific areas: Chemical Physics, Inorganic/Organometallic Chemistry, Actinide Chemistry, Atomic Physics, and Physical Chemistry. This report describes progress by the CSD for 1992. Also included are remarks by the Division Director, a description of work for others (United States Office of Naval Research), and appendices of the Division personnel and an index of investigators. Research reports are grouped as Fundamental Interactions (Photochemical and Radiation Sciences, Chemical Physics, Atomic Physics) or Processes and Techniques (Chemical Energy, Heavy-Element Chemistry, and Chemical Engineering Sciences).

  4. IAI MLM division Ltd | Open Energy Information

    Open Energy Info (EERE)

    Ltd Jump to: navigation, search Name: IAI - MLM division Ltd Place: Be'er Ya'acov, Israel Zip: 70350 Product: Developed a CPV system and plan to continue the project till the...

  5. FERC Division of Hydropower Administration and Compliance | Open...

    Open Energy Info (EERE)

    Division of Hydropower Administration and Compliance Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: FERC Division of Hydropower Administration and...

  6. APS Engineering Support Division (AES) | Advanced Photon Source

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    APS Engineering Support Division (AES) The APS Engineering Support Division provides reliable operations and technical support to the Advanced Photon Source user community. AES...

  7. WDEQ-Air Quality Division | Open Energy Information

    Open Energy Info (EERE)

    Quality Division Jump to: navigation, search Name: WDEQ-Air Quality Division Abbreviation: WDEQ AQD Address: 122 West 25th Street, Herschler Building Place: Cheyenne, Wyoming Zip:...

  8. AET Solar formerly solar division of GGAM Electrical Services...

    Open Energy Info (EERE)

    Solar formerly solar division of GGAM Electrical Services Jump to: navigation, search Name: AET Solar (formerly solar division of GGAM Electrical Services) Place: Limassol, Cyprus...

  9. Uppsala University Division for Electricity | Open Energy Information

    Open Energy Info (EERE)

    University Division for Electricity Jump to: navigation, search Name: Uppsala University Division for Electricity Region: Sweden Sector: Marine and Hydrokinetic Website:...

  10. Oregon Land Management Division - Easements | Open Energy Information

    Open Energy Info (EERE)

    Division - Easements Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Oregon Land Management Division - Easements Author Oregon Land Management...

  11. Upper Division Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Upper Division Hot Spring Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Upper Division Hot Spring Geothermal Area Contents 1 Area Overview 2 History...

  12. Kansas Corporation Commission Energy Division | Open Energy Informatio...

    Open Energy Info (EERE)

    Commission Energy Division Jump to: navigation, search Name: Kansas Corporation Commission Energy Division Address: 1500 SW Arrowhead Road Place: Topeka, KS Zip: 66604-4074 Phone...

  13. Utah Division of Water Rights Information Webpage | Open Energy...

    Open Energy Info (EERE)

    Not Provided DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Utah Division of Water Rights Information Webpage Citation Utah Division of...

  14. HQ Employee/Labor Management Relations Division (HC-33) | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    EmployeeLabor Management Relations Division (HC-33) HQ EmployeeLabor Management Relations Division (HC-33) Functions Provide laboremployee management relations advisory services ...

  15. Getwatt KISCO s energy division | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Getwatt (KISCO's energy division) Place: Jeungpeong, North Chungcheong, Korea (Republic) Zip: 368-906 Product: Energy division of South Korean...

  16. Nuclear Materials Technology Division/Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Technical Accomplish- ments for 1994 2 Nuclear Materials Technology DivisionLos Alamos ... Figure 1. Acid recycle and recovery system. 3 Nuclear Materials Technology DivisionLos ...

  17. Railroad Commission of Texas, Oil and Gas Division | Open Energy...

    Open Energy Info (EERE)

    Texas, Oil and Gas Division Jump to: navigation, search Name: Texas Railroad Commission, Oil and Gas Division Address: 1701 N. Congress Place: Texas Zip: 78711-2967 Website:...

  18. Kentucky DNR Oil and Gas Division | Open Energy Information

    Open Energy Info (EERE)

    DNR Oil and Gas Division Jump to: navigation, search Name: Kentucky DNR Oil and Gas Division Address: 1025 Capital Center Drive Place: Kentucky Zip: 40601 Website:...

  19. California Department of Conservation, Division of Oil, Gas,...

    Open Energy Info (EERE)

    Conservation, Division of Oil, Gas, and Geothermal Resources Jump to: navigation, search Name: California Department of Conservation, Division of Oil, Gas, and Geothermal Resources...

  20. Weapons Experiments Division Explosives Operations Overview

    SciTech Connect (OSTI)

    Laintz, Kenneth E.

    2012-06-19

    Presentation covers WX Division programmatic operations with a focus on JOWOG-9 interests. A brief look at DARHT is followed by a high level overview of explosives research activities currently being conducted within in the experimental groups of WX-Division. Presentation covers more emphasis of activities and facilities at TA-9 as these efforts have been more traditionally aligned with ongoing collaborative explosive exchanges covered under JOWOG-9.

  1. Earth Sciences Division collected abstracts: 1980

    SciTech Connect (OSTI)

    Henry, A.L.; Hornady, B.F.

    1981-10-15

    This report is a compilation of abstracts of papers, reports, and talks presented during 1980 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore National Laboratory. The arrangement is alphabetical (by author). For a given report, a bibliographic reference appears under the name of each coauthor, but the abstract itself is given only under the name of the first author (indicated in capital letters) or the first Earth Sciences Division author.

  2. Medical Sciences Division report for 1993

    SciTech Connect (OSTI)

    Not Available

    1993-12-31

    This year`s Medical Sciences Division (MSD) Report is organized to show how programs in our division contribute to the core competencies of Oak Ridge Institute for Science and Education (ORISE). ORISE`s core competencies in education and training, environmental and safety evaluation and analysis, occupational and environmental health, and enabling research support the overall mission of the US Department of Energy (DOE).

  3. Earth Sciences Division annual report 1989

    SciTech Connect (OSTI)

    Not Available

    1990-06-01

    This Annual Report presents summaries of selected representative research activities from Lawrence Berkeley Laboratory grouped according to the principal disciplines of the Earth Sciences Division: Reservoir Engineering and Hydrology, Geology and Geochemistry, and Geophysics and Geomechanics. We are proud to be able to bring you this report, which we hope will convey not only a description of the Division's scientific activities but also a sense of the enthusiasm and excitement present today in the Earth Sciences.

  4. Tau neutrinos underground: Signals of {nu}{sub {mu}}{yields}...

    Office of Scientific and Technical Information (OSTI)

    The background for these events are muon neutrino and electron neutrino charged-current ... We show that the tau neutrinos from point sources also have the potential for discovery ...

  5. MINER{nu}A, a Neutrino--Nucleus Interaction Experiment

    SciTech Connect (OSTI)

    Solano Salinas, C. J.; Chamorro, A.; Romero, C.

    2007-10-26

    With the fantastic results of KamLAND and SNO for neutrino physics, a new generation of neutrino experiments are being designed and build, specially to study the neutrino oscillations to resolve most of the incognita still we have in the neutrino physics. At FERMILAB we have the experiments MINOS and, in a near future, NO{nu}A, to study this kind of oscillations. One big problem these experiments will have is the lack of a good knowledge of the Physics of neutrino interactions with matter, and this will generate big systematic errors. MINER{nu}A, also at FERMILAB, will cover this space studying with high statistics and great precision the neutrino--nucleus interactions.

  6. G Subject: Implementation of Division D, Title III and Title V, and Division E, Title

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    G Subject: Implementation of Division D, Title III and Title V, and Division E, Title Title VII of the Consolidated and Further Continuing Appropriations Act, 2015, Pub. L. No.113-235 References: Consolidated and Further Continuing Division D, Title III, Sections Appropriations Act, 2015, Pub.L. No. 113-235 301(a), 304, 305, 307, and 310 and Title V, Section 501; Division E, Title VII, Sections 733, 735, 739, 743, 744, 745 and 747 When is this Acquisition Letter (AL) effective? The statutory

  7. Ultrahigh-energy neutrino flux as a probe of large extra-dimensions

    SciTech Connect (OSTI)

    Lykken, Joseph; Mena, Olga; Razzaque, Soebur; /Penn State U., Astron. Astrophys. /Penn State U.

    2007-05-01

    A suppression in the spectrum of ultrahigh-energy (UHE, {ge} 10{sup 18} eV) neutrinos will be present in extra-dimensional scenarios, due to enhanced neutrino-antineutrino annihilation processes with the supernova relic neutrinos. In this scenario, neutrinos can not be responsible for the highest energy events observed in the UHE cosmic ray spectrum. A direct implication of these extra-dimensional interactions would be the absence of UHE neutrinos in ongoing and future neutrino telescopes.

  8. Fermi National Accelerator Laboratory August 2015 The NO?A Neutrino...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    scientists determine the role that ghostly particles called neutrinos played in the evolution of the cosmos. The world's best neutrino beam Fermilab's accelerator complex...

  9. C+C Fusion Cross Sections Measurements for Nuclear Astrophysics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Almaraz-Calderon, S.; Carnelli, P. F. F.; Rehm, K. E.; Albers, M.; Alcorta, M.; Bertone, P. F.; Digiovine, B.; Esbensen, H.; Fernandez Niello, J. O.; Henderson, D.; et al

    2015-06-02

    Total fusion cross section of carbon isotopes were obtained using the newly developed MUSIC detector. MUSIC is a highly efficient, active target-detector system designed to measure fusion excitation functions with radioactive beams. The present measurements are relevant for understanding x-ray superbursts. The results of the first MUSIC campaign as well as the astrophysical implications are presented in this work.

  10. Neutrino self-energy operator in plasmas at ultrahigh energies

    SciTech Connect (OSTI)

    Kuznetsov, A. V. Mikheev, N. V. Shitova, A. M.

    2013-11-15

    A general expression for the neutrino self-energy operator in plasmas was obtained in the limit of ultrahigh energies. Quantitative estimations were performed for the boundaries of the region kinematically allowed for the 'neutrino-spin-light' process. An analysis of the additional neutrino energy in plasmas revealed that, in the cases where neutrino spin light was kinematically allowed, the processes v-bar{sub e} + e{sup -} {yields} W{sup -} and v-bar{sub l} + v{sub l} {yields} Z would be dominant.

  11. Redshift-space distortions in massive neutrino and evolving dark...

    Office of Scientific and Technical Information (OSTI)

    Redshift-space distortions in massive neutrino and evolving dark energy cosmologies ... This content will become publicly available on March 16, 2017 Title: Redshift-space ...

  12. SUPERNOVA NEUTRINO LIGHT CURVES AND SPECTRA FOR VARIOUS PROGENITOR...

    Office of Scientific and Technical Information (OSTI)

    FROM CORE COLLAPSE TO PROTO-NEUTRON STAR COOLING Citation Details In-Document Search Title: SUPERNOVA NEUTRINO LIGHT CURVES AND SPECTRA FOR VARIOUS PROGENITOR STARS: FROM CORE ...

  13. Physicists in China Nail a Key Neutrino Measurement (Science...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in China Nail a Key Neutrino Measurement (Science) External Link: http:news.sciencemag.orgsciencenow201203physicists-in-china-nail-a-key.htm... By jlabadmin on Thu, ...

  14. Neutrino Coherent Scattering Rates at Direct Dark Matter Detectors...

    Office of Scientific and Technical Information (OSTI)

    Neutrino Coherent Scattering Rates at Direct Dark Matter Detectors Citation Details ... Visit OSTI to utilize additional information resources in energy science and technology. A ...

  15. Cosmology at the frontier of neutrino physics (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Cosmology at the frontier of neutrino ... OSTI Identifier: 22068967 Resource Type: Journal Article Resource Relation: Journal Name: ...

  16. Neutrino mass, dark energy, and the linear growth factor (Journal...

    Office of Scientific and Technical Information (OSTI)

    dark energy, and the linear growth factor Citation Details In-Document Search Title: Neutrino mass, dark energy, and the linear growth factor We study the degeneracies between ...

  17. Arthur B. McDonald and Oscillating Neutrinos

    Office of Scientific and Technical Information (OSTI)

    detector in Japan. This "metamorphosis" requires that neutrinos have mass.'1 'For particle physics this was a historic discovery. Its Standard Model of the innermost...

  18. Testing the OPERA Superluminal Neutrino Anomaly at the LHC

    SciTech Connect (OSTI)

    Davoudiasl, Hooman; Rizzo, Thomas G.; /SLAC

    2012-03-15

    The OPERA collaboration has reported the observation of superluminal muon neutrinos, whose speed v{sub {nu}} exceeds that of light c, with (v{sub {nu}}-c)/c {approx_equal} 2.5 x 10{sup -5}. In a recent work, Cohen and Glashow (CG) have refuted this claim by noting that such neutrinos will lose energy, by pair-emission of particles, at unacceptable rates. Following the CG arguments, we point out that pair-emissions consistent with the OPERA anomaly can lead to detectable signals for neutrinos originating from decays of highly boosted top quarks at the LHC, allowing an independent test of the superluminal neutrino hypothesis.

  19. Diluted equilibrium sterile neutrino dark matter (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Diluted equilibrium sterile neutrino dark matter Citation Details In-Document Search This content will become publicly available on November 5, 2016 Title: Diluted equilibrium ...

  20. OSTIblog Articles in the neutrinos Neutrinoless Double Beta Decay...

    Office of Scientific and Technical Information (OSTI)

    Here nuclear chemist Ray Davis and his colleagues installed a solar neutrino experiment underground in the mine called the "Homestake Experiment," the large-scale radiochemical ...

  1. Neutrino Research Supported by the DOE Office of Science

    Office of Scientific and Technical Information (OSTI)

    Laboratory, will be awarded a quarter share of the 2002 Nobel Prize in Physics for detecting solar neutrinos, ghostlike particles produced in nuclear reactions that power the sun. ...

  2. Recent Developments in Neutrino/Antineutrino-Nucleus Interactions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Morfín, Jorge G.; Nieves, Juan; Sobczyk, Jan T.

    2012-01-01

    Recent experimental results and developments in the theoretical treatment of neutrino-nucleus interactions in the energy range of 1–10 GeV are discussed. Difficulties in extracting neutrino-nucleon cross sections from neutrino-nucleus scattering data are explained and significance of understanding nuclear effects for neutrino oscillation experiments is stressed. Detailed discussions of the status of two-body current contribution in the kinematic region dominated by quasielastic scattering and specific features of partonic nuclear effects in weak DIS scattering are presented.

  3. Publisher's Note: Phase effects from the general neutrino Yukawa...

    Office of Scientific and Technical Information (OSTI)

    Language: English Subject: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FLAVOR MODEL; MATRICES; NEUTRINOS; SYMMETRY BREAKING; UNIFIED GAUGE MODELS Word Cloud More Like This Full ...

  4. Neutrino Cross-Section Experiments David Schmitz, Fermilab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on Weak Interactions and Neutrinos September 13-19, 2009 - Perugia, Italy Outline ... on the horizon 2 WIN 09 - Perugia, Italy - September 14-19, 2009 D. Schmitz, ...

  5. THE BNL SUPER NEUTRINO BEAM PROJECT.

    SciTech Connect (OSTI)

    RAPARIA,D.

    2005-01-26

    BNL plans to create a very long base line super neutrino beam facility by upgrading the AGS from the current 0.14 MW to 1.0 MW and beyond. The proposed facility consists of three major components. First is a 1.5 GeV superconducting linac to replace the booster as injector for the AGS, second is the performance upgrade of the AGS itself for higher intensity and repetition rate, and finally is the target and horn system for the neutrino production. The major contribution for the higher power is from the increase of the repetition rate of the AGS from 0.3 Hz to 2.5 Hz, with moderate increase from the intensity. The accelerator design considerations to achieve high intensity and low losses for the new linac and the AGS will be presented. The target and horn design for high power operation and easy maintenance will also be covered.

  6. Dirac neutrinos from a second Higgs doublet

    SciTech Connect (OSTI)

    Davidson, Shainen M.; Logan, Heather E. [Ottawa-Carleton Institute for Physics, Carleton University, Ottawa K1S 5B6 (Canada)

    2009-11-01

    We propose a minimal extension of the standard model in which neutrinos are Dirac particles and their tiny masses are explained without requiring tiny Yukawa couplings. A second Higgs doublet with a tiny vacuum expectation value provides neutrino masses while simultaneously improving the naturalness of the model by allowing a heavier standard-model-like Higgs boson consistent with electroweak precision data. The model predicts a {mu}{yields}e{gamma} rate potentially detectable in the current round of experiments, as well as distinctive signatures in the production and decay of the charged Higgs H{sup +} of the second doublet which can be tested at future colliders. Neutrinoless double beta decay is absent.

  7. Dark photons as fractional cosmic neutrino masquerader

    SciTech Connect (OSTI)

    Ng, Kin-Wang; Tu, Huitzu; Yuan, Tzu-Chiang E-mail: huitzu@phys.sinica.edu.tw

    2014-09-01

    Recently, Weinberg proposed a Higgs portal model with a spontaneously broken global U(1) symmetry in which Goldstone bosons may be masquerading as fractional cosmic neutrinos. We extend the model by gauging the U(1) symmetry. This gives rise to the so-called dark photon and dark Higgs. The dark photons can constitute about 0.912 (0.167) to the effective number of light neutrino species if they decouple from the thermal bath before the pions become non-relativistic and after (before) the QCD transition. Restriction on the parameter space of the portal coupling and the dark Higgs mass is obtained from the freeze-out condition of the dark photons. Combining with the collider data constraints on the invisible width of the standard model Higgs requires the dark Higgs mass to be less than a few GeV.

  8. The History of Metals and Ceramics Division

    SciTech Connect (OSTI)

    Craig, D.F.

    1999-01-01

    The division was formed in 1946 at the suggestion of Dr. Eugene P. Wigner to attack the problem of the distortion of graphite in the early reactors due to exposure to reactor neutrons, and the consequent radiation damage. It was called the Metallurgy Division and assembled the metallurgical and solid state physics activities of the time which were not directly related to nuclear weapons production. William A. Johnson, a Westinghouse employee, was named Division Director in 1946. In 1949 he was replaced by John H Frye Jr. when the Division consisted of 45 people. He was director during most of what is called the Reactor Project Years until 1973 and his retirement. During this period the Division evolved into three organizational areas: basic research, applied research in nuclear reactor materials, and reactor programs directly related to a specific reactor(s) being designed or built. The Division (Metals and Ceramics) consisted of 204 staff members in 1973 when James R. Weir, Jr., became Director. This was the period of the oil embargo, the formation of the Energy Research and Development Administration (ERDA) by combining the Atomic Energy Commission (AEC) with the Office of Coal Research, and subsequent formation of the Department of Energy (DOE). The diversification process continued when James O. Stiegler became Director in 1984, partially as a result of the pressure of legislation encouraging the national laboratories to work with U.S. industries on their problems. During that time the Division staff grew from 265 to 330. Douglas F. Craig became Director in 1992.

  9. Energy Technology Division research summary - 1999.

    SciTech Connect (OSTI)

    1999-03-31

    The Energy Technology Division provides materials and engineering technology support to a wide range of programs important to the US Department of Energy. As shown on the preceding page, the Division is organized into ten sections, five with concentrations in the materials area and five in engineering technology. Materials expertise includes fabrication, mechanical properties, corrosion, friction and lubrication, and irradiation effects. Our major engineering strengths are in heat and mass flow, sensors and instrumentation, nondestructive testing, transportation, and electromechanics and superconductivity applications. The Division Safety Coordinator, Environmental Compliance Officers, Quality Assurance Representative, Financial Administrator, and Communication Coordinator report directly to the Division Director. The Division Director is personally responsible for cultural diversity and is a member of the Laboratory-wide Cultural Diversity Advisory Committee. The Division's capabilities are generally applied to issues associated with energy production, transportation, utilization, or conservation, or with environmental issues linked to energy. As shown in the organization chart on the next page, the Division reports administratively to the Associate Laboratory Director (ALD) for Energy and Environmental Science and Technology (EEST) through the General Manager for Environmental and Industrial Technologies. While most of our programs are under the purview of the EEST ALD, we also have had programs funded under every one of the ALDs. Some of our research in superconductivity is funded through the Physical Research Program ALD. We also continue to work on a number of nuclear-energy-related programs under the ALD for Engineering Research. Detailed descriptions of our programs on a section-by-section basis are provided in the remainder of this book.

  10. The NuMI Neutrino Beam

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adamson, P.; Anderson, K.; Andrews, M.; Andrews, R.; Anghel, I.; Augustine, D.; Aurisano, A.; Avvakumov, S.; Ayres, D. S.; Baller, B.; et al

    2015-10-20

    Our paper describes the hardware and operations of the Neutrinos at the Main Injector (NuMI) beam at Fermilab. It elaborates on the design considerations for the beam as a whole and for individual elements. The most important part of our design details pertaining to individual components is described. Beam monitoring systems and procedures, including the tuning and alignment of the beam and NuMI long-term performance, are also discussed.

  11. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Particle Identification (PID) We use hit topology and timing to identify events. Particles produce Cherenkov light in our tank, as well as some scintillation light, dependent on particle type. Two independent methods to identify electron neutrinos in MiniBooNE: Boosted Decision Trees, and Track Based. The two methods use different event reconstruction fitters. Boosted Decision Trees (BDT) Decision trees are similar to neural nets, but don't suffer from the same pathologies. To form a decision

  12. High-energy solar astrophysics: solar gamma-ray astronomy (Journal...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: High-energy solar astrophysics: solar gamma-ray astronomy Citation Details In-Document Search Title: High-energy solar astrophysics: solar gamma-ray astronomy ...

  13. High-energy solar astrophysics: solar gamma-ray astronomy (Journal...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: High-energy solar astrophysics: solar gamma-ray astronomy Citation Details In-Document Search Title: High-energy solar astrophysics: solar gamma-ray astronomy...

  14. Neutrino-induced nucleosynthesis in supernovae

    SciTech Connect (OSTI)

    Hayakawa, Takehito

    2012-11-12

    The neutrino-induced reactions in supernova explosions produce some rare odd-odd nuclides. We have made a new time-dependent calculation of the supernova production ratio of the long-lived isomeric state of {sup 180}Ta. This time-dependent solution is crucial for understanding the production and survival of this isotope. We find that the explicit time evolution of the synthesis of {sup 180}Ta using the available nuclear data avoids the overproduction relative to {sup 138}La for a {nu}-process neutrino temperature of 4 MeV. An unstable isotope {sup 92}Nb decays to {sup 92}Zr with a half-life of 3.47 Multiplication-Sign 10{sup 7} years. We have proposed the {nu}-process origin for {sup 92}Nb. We calculate key neutrino-induced reactions and supernova {nu}-process. Our calculated result shows that the abundance of {sup 92}Nb can be explained by the {nu}-process.

  15. Search for Muon Neutrino Disappearance in the Booster Neutrino Beam of Fermilab; Busqueda de Desaparicion de Neutrinos del Muon en el Haz de Neutrinos del Booster de Fermilab

    SciTech Connect (OSTI)

    Mendez Mendez, Diana Patricia

    2015-01-01

    In this work we carried out the disappearance analysis of muon neutrinos produced in the Fermilab Booster Neutrino Beam, using the data released to the public by the collaborations of the MiniBooNE and SciBooNE experiments. The calculations were made with programs in C and C++, implementing the ROOT libraries. From the analysis, using both the classical Pearson method and the Feldman and Cousins frequentist corrections, we obtained the 90\\% C.L. limit for the oscillation parameters sin22θ and Δm2 in the region 0.1 ≤ Δm2 ≤ 10 eV2 using a two neutrino model. The result presented in this work is consistent with the official one, with small deviations ascribed to round-off errors in the format of the used data, as well as statistical fluctuations in the generation of fake experiments used in the Feldman and Cousins method. As the official one, our result is consistent with the null oscillation hypothesis. This work was carried out independently to the MiniBooNE and SciBooNE collaborations and its results are not official.

  16. Energy Technology Division research summary -- 1994

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    Research funded primarily by the NRC is directed toward assessing the roles of cyclic fatigue, intergranular stress corrosion cracking, and irradiation-assisted stress corrosion cracking on failures in light water reactor (LWR) piping systems, pressure vessels, and various core components. In support of the fast reactor program, the Division has responsibility for fuel-performance modeling and irradiation testing. The Division has major responsibilities in several design areas of the proposed International Thermonuclear Experimental Reactor (ITER). The Division supports the DOE in ensuring safe shipment of nuclear materials by providing extensive review of the Safety Analysis Reports for Packaging (SARPs). Finally, in the nuclear area they are investigating the safe disposal of spent fuel and waste. In work funded by DOE`s Energy Efficiency and Renewable Energy, the high-temperature superconductivity program continues to be a major focal point for industrial interactions. Coatings and lubricants developed in the division`s Tribology Section are intended for use in transportation systems of the future. Continuous fiber ceramic composites are being developed for high-performance heat engines. Nondestructive testing techniques are being developed to evaluate fiber distribution and to detect flaws. A wide variety of coatings for corrosion protection of metal alloys are being studied. These can increase lifetimes significant in a wide variety of coal combustion and gasification environments.

  17. Nuclear Chemistry Division annual report FY83

    SciTech Connect (OSTI)

    Struble, G.

    1983-01-01

    The purpose of the annual reports of the Nuclear Chemistry Division is to provide a timely summary of research activities pursued by members of the Division during the preceding year. Throughout, details are kept to a minimum; readers desiring additional information are encouraged to read the referenced documents or contact the authors. The Introduction presents an overview of the Division's scientific and technical programs. Next is a section of short articles describing recent upgrades of the Division's major facilities, followed by sections highlighting scientific and technical advances. These are grouped under the following sections: nuclear explosives diagnostics; geochemistry and environmental sciences; safeguards technology and radiation effect; and supporting fundamental science. A brief overview introduces each section. Reports on research supported by a particular program are generally grouped together in the same section. The last section lists the scientific, administrative, and technical staff in the Division, along with visitors, consultants, and postdoctoral fellows. It also contains a list of recent publications and presentations. Some contributions to the annual report are classified and only their abstracts are included in this unclassified portion of the report (UCAR-10062-83/1); the full article appears in the classified portion (UCAR-10062-83/2).

  18. CP-phase effects on the effective neutrino mass m{sub ee} in the case of quasidegenerate neutrinos

    SciTech Connect (OSTI)

    Maalampi, J. [Department of Physics, P.O. Box 35, FIN-40014 University of Jyvaeskylae (Finland); Helsinki Institute of Physics, P.O. Box 64, FIN-00014 University of Helsinki (Finland); Riittinen, J. [Department of Physics, P.O. Box 35, FIN-40014 University of Jyvaeskylae (Finland)

    2010-02-01

    We study the possibility that the three mass states of the ordinary active neutrinos actually split into pairs of quasidegenerate states, with {Delta}m{sub kk}{sup '2{approx}}10{sup -12} eV{sup 2} or less, as a result of mixing of active neutrinos with sterile neutrinos. While in laboratory experiments these quasidegenerate pairs will look identical to single active states, the CP phase factors associated with active-sterile mixing might cause cancellations in the effective electron neutrino mass m{sub ee} measured in the neutrinoless double beta decay experiments thereby revealing the split nature of states.

  19. PQ-symmetry for a small Dirac neutrino mass, dark radiation and cosmic neutrinos

    SciTech Connect (OSTI)

    Park, Wan-Il

    2014-06-01

    We propose a supersymmetric scenario in which the small Yukawa couplings for the Dirac neutrino mass term are generated by the spontaneous-breaking of Pecci-Quinn symmetry. In this scenario, a right amount of dark matter relic density can be obtained by either right-handed sneutrino or axino LSP, and a sizable amount of axion dark radiation can be obtained. Interestingly, the decay of right-handed sneutrino NLSP to axino LSP is delayed to around the present epoch, and can leave an observable cosmological background of neutrinos at the energy scale of O(10−100) GeV.

  20. Neutrino-Nucleon Neutrino-Nucleon Neutral Current Elastic Neutral Current Elastic

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Neutrino-Nucleon Neutral Current Elastic Neutral Current Elastic Interactions in MiniBooNE Interactions in MiniBooNE Denis Perevalov Denis Perevalov University of Alabama University of Alabama for the MiniBooNE collaboration for the MiniBooNE collaboration presented by: Rex Tayloe, Indiana University Nuint '09 2 Neutrino-Nucleon NC Elastic Scattering    p , n    p , n   Z p,n p,n   - The most fundamental NC probe of the nucleus/nucleon. - Unlike CC

  1. Section III, Division 5 - Development And Future Directions

    SciTech Connect (OSTI)

    Morton, Dana K.; Jetter, Robert I; Nestell, James E.; Burchell, Timothy D; Sham, Sam

    2012-01-01

    This paper provides commentary on a new division under Section III of the ASME Boiler and Pressure Vessel (BPV) Code. This new Division 5 has an issuance date of November 1, 2011 and is part of the 2011 Addenda to the 2010 Edition of the BPV Code. The new Division covers the rules for the design, fabrication, inspection and testing of components for high temperature nuclear reactors. Information is provided on the scope and need for Division 5, the structure of Division 5, where the rules originated, the various changes made in finalizing Division 5, and the future near-term and long-term expectations for Division 5 development.

  2. Argonne National Laboratory Physics Division annual report, January--December 1996

    SciTech Connect (OSTI)

    Thayer, K.J.

    1997-08-01

    The past year has seen several of the Physics Division`s new research projects reach major milestones with first successful experiments and results: the atomic physics station in the Basic Energy Sciences Research Center at the Argonne Advanced Photon Source was used in first high-energy, high-brilliance x-ray studies in atomic and molecular physics; the Short Orbit Spectrometer in Hall C at the Thomas Jefferson National Accelerator (TJNAF) Facility that the Argonne medium energy nuclear physics group was responsible for, was used extensively in the first round of experiments at TJNAF; at ATLAS, several new beams of radioactive isotopes were developed and used in studies of nuclear physics and nuclear astrophysics; the new ECR ion source at ATLAS was completed and first commissioning tests indicate excellent performance characteristics; Quantum Monte Carlo calculations of mass-8 nuclei were performed for the first time with realistic nucleon-nucleon interactions using state-of-the-art computers, including Argonne`s massively parallel IBM SP. At the same time other future projects are well under way: preparations for the move of Gammasphere to ATLAS in September 1997 have progressed as planned. These new efforts are imbedded in, or flowing from, the vibrant ongoing research program described in some detail in this report: nuclear structure and reactions with heavy ions; measurements of reactions of astrophysical interest; studies of nucleon and sub-nucleon structures using leptonic probes at intermediate and high energies; atomic and molecular structure with high-energy x-rays. The experimental efforts are being complemented with efforts in theory, from QCD to nucleon-meson systems to structure and reactions of nuclei. Finally, the operation of ATLAS as a national users facility has achieved a new milestone, with 5,800 hours beam on target for experiments during the past fiscal year.

  3. Subpanel on accelerator-based neutrino oscillation experiments

    SciTech Connect (OSTI)

    1995-09-01

    Neutrinos are among nature`s fundamental constituents, and they are also the ones about which we know least. Their role in the universe is widespread, ranging from the radioactive decay of a single atom to the explosions of supernovae and the formation of ordinary matter. Neutrinos might exhibit a striking property that has not yet been observed. Like the back-and-forth swing of a pendulum, neutrinos can oscillate to-and-from among their three types (or flavors) if nature provides certain conditions. These conditions include neutrinos having mass and a property called {open_quotes}mixing.{close_quotes} The phenomenon is referred to as neutrino oscillations. The questions of the origin of neutrino mass and mixing among the neutrino flavors are unsolved problems for which the Standard Model of particle physics holds few clues. It is likely that the next critical step in answering these questions will result from the experimental observation of neutrino oscillations. The High Energy Physics Advisory Panel (HEPAP) Subpanel on Accelerator-Based Neutrino Oscillation Experiments was charged to review the status and discovery potential of ongoing and proposed accelerator experiments on neutrino oscillations, to evaluate the opportunities for the U.S. in this area of physics, and to recommend a cost-effective plan for pursuing this physics, as appropriate. The complete charge is provided in Appendix A. The Subpanel studied these issues over several months and reviewed all the relevant and available information on the subject. In particular, the Subpanel reviewed the two proposed neutrino oscillation programs at Fermi National Accelerator Laboratory (Fermilab) and at Brookhaven National Laboratory (BNL). The conclusions of this review are enumerated in detail in Chapter 7 of this report. The recommendations given in Chapter 7 are also reproduced in this summary.

  4. Chemical Technology Division annual technical report, 1996

    SciTech Connect (OSTI)

    1997-06-01

    CMT is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. It conducts R&D in 3 general areas: development of advanced power sources for stationary and transportation applications and for consumer electronics, management of high-level and low-level nuclear wastes and hazardous wastes, and electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, materials chemistry of electrified interfaces and molecular sieves, and the theory of materials properties. It also operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at ANL and other organizations. Technical highlights of the Division`s activities during 1996 are presented.

  5. Jeff Broughton Named NERSC Division Deputy for Operations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Jeff Broughton Named NERSC Division Deputy for Operations Jeff Broughton Named NERSC Division Deputy for Operations August 15, 2013 broughton Jeff Broughton Jeff Broughton has been named as the new NERSC Division Deputy for Operations. The announcement was made Aug. 15 by NERSC Division Director Sudip Dosanjh. "Rather than this being a new position, the Division Deputy title is a fitting recognition of the duties and responsibilities Jeff has taken on since he joined NERSC four years

  6. Biology Division progress report, October 1, 1991--September 30, 1993

    SciTech Connect (OSTI)

    Hartman, F.C.; Cook, J.S.

    1993-10-01

    This Progress Report summarizes the research endeavors of the Biology Division of the Oak Ridge National Laboratory during the period October 1, 1991, through September 30, 1993. The report is structured to provide descriptions of current activities and accomplishments in each of the Division`s major organizational units. Lists of information to convey the entire scope of the Division`s activities are compiled at the end of the report.

  7. The Next Generation of Photo-Detectors for Particle Astrophysics

    SciTech Connect (OSTI)

    Wagner, Robert G.; Byrum, Karen L.; Sanchez, Mayly; Vaniachine, Alexandre V.; Siegmund, Oswald; Otte, Nepomuk A.; Ramberg, Erik; Hall, Jeter; Buckley, James

    2009-04-01

    We advocate support of research aimed at developing alternatives to the photomultiplier tube for photon detection in large astroparticle experiments such as gamma-ray and neutrino astronomy, and direct dark matter detectors. Specifically, we discuss the development of large area photocathode microchannel plate photomultipliers and silicon photomultipliers. Both technologies have the potential to exhibit improved photon detection efficiency compared to existing glass vacuum photomultiplier tubes.

  8. The next generation of photo-detector for particle astrophysics.

    SciTech Connect (OSTI)

    Wagner, R. G.; Byrum, K. L.; Sanchez, M.; Vaniachine, A. V.; Siegmund, O.; Otte, N.A.; Ramberg, E.; Hall, J.; Buckley, J.; High Energy Physics; Univ. of California at Berkeley; FNAL; Washington Univ.

    2009-06-02

    We advocate support of research aimed at developing alternatives to the photomultiplier tube for photon detection in large astroparticle experiments such as gamma-ray and neutrino astronomy, and direct dark matter detectors. Specifically, we discuss the development of large area photocathode microchannel plate photomultipliers and silicon photomultipliers. Both technologies have the potential to exhibit improved photon detection efficiency compared to existing glass vacuum photomultiplier tubes.

  9. The chemical composition of the sun from helioseismic and solar neutrino data

    SciTech Connect (OSTI)

    Villante, Francesco L.; Serenelli, Aldo M.; Delahaye, Franck; Pinsonneault, Marc H.

    2014-05-20

    We perform a quantitative analysis of the solar composition problem by using a statistical approach that allows us to combine the information provided by helioseismic and solar neutrino data in an effective way. We include in our analysis the helioseismic determinations of the surface helium abundance and of the depth of the convective envelope, the measurements of the {sup 7}Be and {sup 8}B neutrino fluxes, and the sound speed profile inferred from helioseismic frequencies. We provide all the ingredients to describe how these quantities depend on the solar surface composition, different from the initial and internal composition due to the effects of diffusion and nuclear reactions, and to evaluate the (correlated) uncertainties in solar model predictions. We include error sources that are not traditionally considered such as those from inversion of helioseismic data. We, then, apply the proposed approach to infer the chemical composition of the Sun. Our result is that the opacity profile of the Sun is well constrained by the solar observational properties. In the context of a two-parameter analysis in which elements are grouped as volatiles (i.e., C, N, O, and Ne) and refractories (i.e., Mg, Si, S, and Fe), the optimal surface composition is found by increasing the abundance of volatiles by (45 4)% and that of refractories by (19 3)% with respect to the values provided by Asplund et al. (2009, ARA and A, 47, 481). This corresponds to the abundances ?{sub O} = 8.85 0.01 and ?{sub Fe} = 7.52 0.01, which are consistent at the ?1? level with those provided by Grevesse and Sauval (1998, SSRv, 85, 161). As an additional result of our analysis, we show that the best fit to the observational data is obtained with values of input parameters of the standard solar models (radiative opacities, gravitational settling rate, and the astrophysical factors S {sub 34} and S {sub 17}) that differ at the ?1? level from those presently adopted.

  10. NOvA: Building a Next Generation Neutrino Experiment

    ScienceCinema (OSTI)

    Perko, John; Williams, Ron; Miller, Bill;

    2014-05-30

    The NOvA neutrino experiment is searching for the answers to some of the most fundamental questions of the universe. This video documents how collaboration between government research institutions like Fermilab, academia and industry can create one of the largest neutrino detectors in the world.

  11. Sterile Neutrino Searches in MINOS and MINOS+ Experiments

    SciTech Connect (OSTI)

    Huang, Junting

    2015-05-01

    This dissertation presents the searches on sterile neutrinos using the data collected in MINOS+ Experiment from September 2013 to September 2014, and the full data set of MINOS Experiment collected from 2005 to 2012. Anomalies in short baseline experiments, such as LSND and MiniBooNE, showed hints of sterile neutrinos, a type of neutrino that does not interact with the Standard Model particles. In this work, two models are considered: 3+1 and large extra dimension (LED). In the 3+1 model, one sterile neutrino state is added into the standard oscillation scheme consisting of three known active neutrino states ve, vμ and vτ. In the LED model, sterile neutrinos arise as Kaluza-Klein (KK) states due to assumed large extra dimensions. Mixing between sterile and active neutrino states may modify the oscillation patterns observed in the MINOS detectors. Both searches yield null results. For 3+1, a combined fit of MINOS and MINOS+ data gives a stronger limit on θ24 in the range of 10-2 eV2 < Δm412 < 1 eV2 than previous experiments. For LED, with the complete MINOS data set, the size of extra dimensions is constrained to be smaller than ~ 0.35 μm at 90% C.L. in the limit of a vanishing lightest neutrino mass.

  12. Possible cosmogenic neutrino constraints on Planck-scale Lorentz violation

    SciTech Connect (OSTI)

    Mattingly, David M.; Maccione, Luca; Galaverni, Matteo; Liberati, Stefano; Sigl, Günter E-mail: luca.maccione@desy.de E-mail: liberati@sissa.it

    2010-02-01

    We study, within an effective field theory framework, O(E{sup 2}M{sub Pl}{sup 2}) Planck-scale suppressed Lorentz invariance violation (LV) effects in the neutrino sector, whose size we parameterize by a dimensionless parameter η{sub ν}. We find deviations from predictions of Lorentz invariant physics in the cosmogenic neutrino spectrum. For positive O(1) coefficients no neutrino will survive above 10{sup 19}eV. The existence of this cutoff generates a bump in the neutrino spectrum at energies of 10{sup 17}eV. Although at present no constraint can be cast, as current experiments do not have enough sensitivity to detect ultra-high-energy neutrinos, we show that experiments in construction or being planned have the potential to cast limits as strong as η{sub ν}∼<10{sup −4} on the neutrino LV parameter, depending on how LV is distributed among neutrino mass states. Constraints on η{sub ν} < 0 can in principle be obtained with this strategy, but they require a more detailed modeling of how LV affects the neutrino sector.

  13. The Era of Kilometer-Scale Neutrino Detectors

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Halzen, Francis; Katz, Uli

    2013-01-01

    Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer-scale neutrino detectors were required. The first such instrument, IceCube, transforms a cubic kilometer of deep and ultra-transparent Antarctic ice into a particle detector. KM3NeT, an instrument that aims to exploit several cubic kilometers of the deep Mediterranean sea as its detector medium, is in its final design stages. The scientific missions of these instruments include searching for sources of cosmic rays and for dark matter, observing Galactic supernova explosions, and studying the neutrinos themselves. Identifying the accelerators that produce Galacticmore » and extragalactic cosmic rays has been a priority mission of several generations of high-energy gamma-ray and neutrino telescopes; success has been elusive so far. Detecting the gamma-ray and neutrino fluxes associated with cosmic rays reaches a new watershed with the completion of IceCube, the first neutrino detector with sensitivity to the anticipated fluxes. In this paper, we will first revisit the rationale for constructing kilometer-scale neutrino detectors. We will subsequently recall the methods for determining the arrival direction, energy and flavor of neutrinos, and will subsequently describe the architecture of the IceCube and KM3NeT detectors.« less

  14. Experimental investigation of the thriving mystery of sterile neutrinos

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fava, A.

    2016-04-07

    Here, several “anomalies” have been reported from a variety of experiments studying neutrino oscillations over short baselines (less than 1 km) since 1998. Even though not fully compatible with each other, these results could possibly hint at the existence of at least one additional “sterile” neutrino state beyond the Standard Model picture of Particle Physics.

  15. Testing neutrino spectra formation in collapsing stars with the diffuse supernova neutrino flux

    SciTech Connect (OSTI)

    Lunardini, Cecilia

    2007-04-01

    I address the question of what can be learned from the observation of the diffuse supernova neutrino flux in the precision phase, at next generation detectors of Megaton scale. An analytical study of the spectrum of the diffuse flux shows that, above realistic detection thresholds of 10 MeV or higher, the spectrum essentially reflects the exponential-times-polynomial structure of the original neutrino spectrum at the emission point. There is only a weak (tens of percent) dependence on the power {beta} describing the growth of the supernova rate with the redshift. Different original neutrino spectra correspond to large differences in the observed spectrum of events at a water Cherenkov detector: for typical supernova rates, the ratio of the numbers of events in the first and second energy bins (of 5 MeV width) varies in the interval 1.5-4.3 for pure water (energy threshold 18 MeV) and in the range 1-2.5 for water with gadolinium (10 MeV threshold). In the first case, discrimination would be difficult due to the large errors associated with background. With gadolinium, instead, the reduction of the total error down to the 10%-20% level would allow spectral sensitivity, with a dramatic improvement of precision with respect to the SN1987A data. Even in this latter case, for typical neutrino luminosity the dependence on {beta} is below sensitivity, so that it can be safely neglected in data analysis.

  16. Study of muon neutrino and muon antineutrino disappearance with the NOvA neutrino oscillation experiment

    SciTech Connect (OSTI)

    Pawloski, Gregory

    2014-06-30

    The primary goal of this working group is to study the disappearance rate of νμ charged current events in order to measure the mixing angle θ23 and the magnitude of the neutrino mass square splitting Δm 232.

  17. Active and sterile neutrino mass effects on beta decay spectra

    SciTech Connect (OSTI)

    Boillos, Juan Manuel; Moya de Guerra, Elvira

    2013-06-10

    We study the spectra of the emitted charged leptons in charge current weak nuclear processes to analyze the effect of neutrino masses. Standard active neutrinos are studied here, with masses of the order of 1 eV or lower, as well as sterile neutrinos with masses of a few keV. The latter are warm dark matter (WDM) candidates hypothetically produced or captured as small mixtures with the active neutrinos. We compute differential decay or capture rates spectra in weak charged processes of different nuclei ({sup 3}H, {sup 187}Re, {sup 107}Pd, {sup 163}Ho, etc) using different masses of both active and sterile neutrinos and different values of the mixing parameter.

  18. Majorana equations and the rest mass of neutrinos

    SciTech Connect (OSTI)

    von Borzeszkowski, H.; Treder, H.

    1985-02-01

    As is well known, the law of parity conservation does not hold in weak interactions. This type of asymmetry created a number of theoretical problems which were solved, first of all, by a new understanding of the features of neutrinos and their role in weak interactions. These solutions were based, however, essentially on the handedness (chirality) of neutrinos which is closely related to their vanishing rest mass. The thesis of neutrinos with nonvanishing rest mass, newly considered in the literature, therefore requires a rediscussion of the early arguments concerning the relation between the neutrino theory and some weak interaction essentials. When one does this, as in the present paper, it is noted that neutrinos with rest mass lead to some difficulties, in particular to a violation of T invariance.

  19. AGS SUPER NEUTRINO BEAM FACILITY ACCELERATOR AND TARGET SYSTEM DESIGN (NEUTRINO WORKING GROUP REPORT-II).

    SciTech Connect (OSTI)

    DIWAN,M.; MARCIANO,W.; WENG,W.; RAPARIA,D.

    2003-04-21

    This document describes the design of the accelerator and target systems for the AGS Super Neutrino Beam Facility. Under the direction of the Associate Laboratory Director Tom Kirk, BNL has established a Neutrino Working Group to explore the scientific case and facility requirements for a very long baseline neutrino experiment. Results of a study of the physics merit and detector performance was published in BNL-69395 in October 2002, where it was shown that a wide-band neutrino beam generated by a 1 MW proton beam from the AGS, coupled with a half megaton water Cerenkov detector located deep underground in the former Homestake mine in South Dakota would be able to measure the complete set of neutrino oscillation parameters: (1) precise determination of the oscillation parameters {Delta}m{sub 32}{sup 2} and sin{sup 2} 2{theta}{sub 32}; (2) detection of the oscillation of {nu}{sub {mu}}-{nu}{sub e} and measurement of sin{sup 2} 2{theta}{sub 13}; (3) measurement of {Delta}m{sub 21}{sup 2} sin 2{theta}{sub 12} in a {nu}{sub {mu}} {yields} {nu}{sub e} appearance mode, independent of the value of {theta}{sub 13}; (4) verification of matter enhancement and the sign of {Delta}m{sub 32}{sup 2}; and (5) determination of the CP-violation parameter {delta}{sub CP} in the neutrino sector. This report details the performance requirements and conceptual design of the accelerator and the target systems for the production of a neutrino beam by a 1.0 MW proton beam from the AGS. The major components of this facility include a new 1.2 GeV superconducting linac, ramping the AGS at 2.5 Hz, and the new target station for 1.0 MW beam. It also calls for moderate increase, about 30%, of the AGS intensity per pulse. Special care is taken to account for all sources of proton beam loss plus shielding and collimation of stray beam halo particles to ensure equipment reliability and personal safety. A preliminary cost estimate and schedule for the accelerator upgrade and target system are also

  20. Cosmological and astrophysical constraints on superconducting cosmic strings

    SciTech Connect (OSTI)

    Miyamoto, Koichi; Nakayama, Kazunori E-mail: kazunori@hep-th.phys.s.u-tokyo.ac.jp

    2013-07-01

    We investigate the cosmological and astrophysical constraints on superconducting cosmic strings (SCSs). SCS loops emit strong bursts of electromagnetic waves, which might affect various cosmological and astrophysical observations. We take into account the effect on the CMB anisotropy, CMB blackbody spectrum, BBN, observational implications on radio wave burst and X-ray or ?-ray events, and stochastic gravitational wave background measured by pulsar timing experiments. We then derive constraints on the parameters of SCS from current observations and estimate prospects for detecting SCS signatures in on-going observations. As a result, we find that these constraints exclude broad parameter regions, and also that on-going radio wave observations can probe large parameter space.

  1. Using Visual Analytics to Maintain Situation Awareness in Astrophysics

    SciTech Connect (OSTI)

    Aragon, Cecilia R.; Poon, Sarah S.; Aldering, Gregory S.; Thomas, Rollin C.; Quimby, Robert

    2008-07-01

    We present a novel collaborative visual analytics application for cognitively overloaded users in the astrophysics domain. The system was developed for scientists needing to analyze heterogeneous, complex data under time pressure, and then make predictions and time-critical decisions rapidly and correctly under a constant influx of changing data. The Sunfall Data Taking system utilizes severalnovel visualization and analysis techniques to enable a team of geographically distributed domain specialists to effectively and remotely maneuver a custom-built instrument under challenging operational conditions. Sunfall Data Taking has been in use for over eighteen months by a major international astrophysics collaboration (the largest data volume supernova search currently in operation), and has substantially improved the operational efficiency of its users. We describe the system design process by an interdisciplinary team, the system architecture, and the results of an informal usability evaluation of the production system by domain experts in the context of Endsley?s three levels of situation awareness.

  2. Earth Sciences Division annual report 1990

    SciTech Connect (OSTI)

    1991-06-01

    This Annual Report presents summaries of selected representative research activities grouped according to the principal disciplines of the Earth Sciences Division: Reservoir Engineering and Hydrogeology, Geology and Geochemistry, and Geophysics and Geomechanics. Much of the Division`s research deals with the physical and chemical properties and processes in the earth`s crust, from the partially saturated, low-temperature near-surface environment to the high-temperature environments characteristic of regions where magmatic-hydrothermal processes are active. Strengths in laboratory and field instrumentation, numerical modeling, and in situ measurement allow study of the transport of mass and heat through geologic media -- studies that now include the appropriate chemical reactions and the hydraulic-mechanical complexities of fractured rock systems. Of particular note are three major Division efforts addressing problems in the discovery and recovery of petroleum, the application of isotope geochemistry to the study of geodynamic processes and earth history, and the development of borehole methods for high-resolution imaging of the subsurface using seismic and electromagnetic waves. In 1989 a major DOE-wide effort was launched in the areas of Environmental Restoration and Waste Management. Many of the methods previously developed for and applied to deeper regions of the earth will in the coming years be turned toward process definition and characterization of the very shallow subsurface, where man-induced contaminants now intrude and where remedial action is required.

  3. Easy come-easy go divisible cash

    SciTech Connect (OSTI)

    Chan, A.; Tsiounis, Y.; Frankel, Y.

    1996-10-16

    Recently, there has been an interest in making electronic cash protocols more practical for electronic commerce by developing e-cash which is divisible (e.g., a coin which can be spent incrementally but total purchases are limited to the monetary value of the coin). In Crypto`95, T. Okamoto presented the first practical divisible, untraceable, off-line e-cash scheme, which requires only O(log N) computations for each of the withdrawal, payment and deposit procedures, where N = (total coin value)/(smallest divisible unit). However, Okamoto`s set-up procedure is quite inefficient (on the order of 4,000 multi-exponentiations and depending on the size of the RSA modulus). The authors formalize the notion of range-bounded commitment, originally used in Okamoto`s account establishment protocol, and present a very efficient instantiation which allows one to construct the first truly efficient divisible e-cash system. The scheme only requires the equivalent of one (1) exponentiation for set-up, less than 2 exponentiations for withdrawal and around 20 for payment, while the size of the coin remains about 300 Bytes. Hence, the withdrawal protocol is 3 orders of magnitude faster than Okamoto`s, while the rest of the system remains equally efficient, allowing for implementation in smart-cards. Similar to Okamoto`s, the scheme is based on proofs whose cryptographic security assumptions are theoretically clarified.

  4. Materials Sciences Division 1990 annual report

    SciTech Connect (OSTI)

    Not Available

    1990-01-01

    This report is the Materials Sciences Division's annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

  5. Publications - Center for Plasma in the Laboratory and Astrophysics - UW

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Madison Physics Department Publications CPLA Home - Experiments Madison Symmetric Torus Madsion Dynamo Experiment Rotating Wall Machine Plasma-Couette Experiment Madison Plasma Dynamo Experiment - Theory Groups MHD Turbulence Transport in Fusion Devices Plasma Astrophysics RFP Theory - Multi-Institutional Centers Center for Magnetic Self Organization Center for Theory and Computation Center for Momentum Transport and Flow Organization About CPLA Directory Publications Links CPLA Schedule

  6. Particle Acceleration in Shocks: From Astrophysics to Laboratory In Silico

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | Argonne Leadership Computing Facility Frederico Fiuza, Lawrence Livermore National Laboratory Particle Acceleration in Shocks: From Astrophysics to Laboratory In Silico PI Name: Frederico Fiuza PI Email: fiuza1@llnl.gov Institution: Lawrence Livermore National Laboratory Allocation Program: INCITE Allocation Hours at ALCF: 120 Million Year: 2014 Research Domain: Physics This project focuses on longstanding scientific problems closely tied to extreme plasma physics processes, such as

  7. Magnetohydrodynamic Particle Acceleration Processes: SSX Experiments, Theory, and Astrophysical Applications

    SciTech Connect (OSTI)

    Brown, Michael R.

    2006-11-16

    Project Title: Magnetohydrodynamic Particle Acceleration Processes: SSX Experiments, Theory, and Astrophysical Applications PI: Michael R. Brown, Swarthmore College The purpose of the project was to provide theoretical and modeling support to the Swarthmore Spheromak Experiment (SSX). Accordingly, the theoretical effort was tightly integrated into the SSX experimental effort. During the grant period, Michael Brown and his experimental collaborators at Swarthmore, with assistance from W. Matthaeus as appropriate, made substantial progress in understanding the physics SSX plasmas.

  8. Energy Technology Division research summary 1997.

    SciTech Connect (OSTI)

    1997-10-21

    The Energy Technology Division provides materials and engineering technology support to a wide range of programs important to the US Department of Energy. As shown on the preceding page, the Division is organized into ten sections, five with concentrations in the materials area and five in engineering technology. Materials expertise includes fabrication, mechanical properties, corrosion, friction and lubrication, and irradiation effects. Our major engineering strengths are in heat and mass flow, sensors and instrumentation, nondestructive testing, transportation, and electromechanics and superconductivity applications. The Division Safety Coordinator, Environmental Compliance Officers, Quality Assurance Representative, Financial Administrator, and Communication Coordinator report directly to the Division Director. The Division Director is personally responsible for cultural diversity and is a member of the Laboratory-wide Cultural Diversity Advisory Committee. The Division's capabilities are generally applied to issues associated with energy production, transportation, utilization or conservation, or with environmental issues linked to energy. As shown in the organization chart on the next page, the Division reports administratively to the Associate Laboratory Director (ALD) for Energy and Environmental Science and Technology (EEST) through the General Manager for Environmental and Industrial Technologies. While most of our programs are under the purview of the EEST ALD, we also have had programs funded under every one of the ALDs. Some of our research in superconductivity is funded through the Physical Research Program ALD. We also continue to work on a number of nuclear-energy-related programs under the ALD for Engineering Research. Detailed descriptions of our programs on a section-by-section basis are provided in the remainder of this book. This Overview highlights some major trends. Research related to the operational safety of commercial light water nuclear

  9. Physics Division annual review, 1 April 1985-31 March 1986

    SciTech Connect (OSTI)

    Not Available

    1986-09-01

    The highlight of the Argonne Physics Division during the past year (1985/86) has been the completion and dedication of the final superconducting linac stages of the ATLAS system and the beginning of the research program that utilizes the full capabilities of that system. The transition to using the full ATLAS and the new experimental area has been a smooth one and the research program is beginning to bear fruit. The experimental facilities have also come into operation with three major components, consisting of the first stage of a gamma detection system incorporating an array of Compton-suppressed germanium detectors and BGO total energy detectors, a magnetic spectrograph of the Enge split-pole design, with a focal-plane detector system adapted to heavy ions, and a new scattering facility with a number of features. Interesting new data are emerging on quasi-elastic processes, on the transition between fission and quasi-fission and the study of nuclear structure at high spin. The past year has also seen the merging of the nuclear research in the Argonne Chemistry Division, mostly in heavy-ion and medium-energy nuclear physics, with the Physics Division. The merger is leading to full cooperation within the larger group and will help broaden and strengthen the total effort in nuclear physics. In medium-energy physics the year has seen the successful execution of an experiment at the SLAC NPAS station to study the delta resonance in nuclei. Progress is being made in the effort at Fermilab on deep inelastic muon scattering, on the development of a tensor polarized gas deuterium target for use with storage rings, and on the LAMPF neutrino oscillation experiment. In theoretical nuclear physics an effort is continuing on investigating the relevant degrees of freedom in the microscopic dynamics of nuclei and the importance of three-body forces. 51 figs., 2 tabs.

  10. Plasma phenomenology in astrophysical systems: Radio-sources and jets

    SciTech Connect (OSTI)

    Montani, Giovanni; Petitta, Jacopo

    2014-06-15

    We review the plasma phenomenology in the astrophysical sources which show appreciable radio emissions, namely Radio-Jets from Pulsars, Microquasars, Quasars, and Radio-Active Galaxies. A description of their basic features is presented, then we discuss in some details the links between their morphology and the mechanisms that lead to the different radio-emissions, investigating especially the role played by the plasma configurations surrounding compact objects (Neutron Stars, Black Holes). For the sake of completeness, we briefly mention observational techniques and detectors, whose structure set them apart from other astrophysical instruments. The fundamental ideas concerning angular momentum transport across plasma accretion diskstogether with the disk-source-jet coupling problemare discussed, by stressing their successes and their shortcomings. An alternative scenario is then inferred, based on a parallelism between astrophysical and laboratory plasma configurations, where small-scale structures can be found. We will focus our attention on the morphology of the radio-jets, on their coupling with the accretion disks and on the possible triggering phenomena, viewed as profiles of plasma instabilities.

  11. BooNE: Booster Neutrino Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Interesting Facts About the Booster Neutrino Experiment (BooNE): BooNE is the only experiment to search the entire range covered by the LSND oscillation signal. First proposed in 1997, BooNE has been collecting data since August 2002. The BooNE collaboration is small by high energy physics standards, comprising 75 physicists from 16 instiutions. If BooNE detects a supernova, it will send an automatic signal to telescopes around the world describing its position. BooNE collaboration - click to

  12. Foreword to Special Issue: Papers from the 54th Annual Meeting of the APS Division of Plasma Physics, Providence, Rhode Island, USA, 2012

    SciTech Connect (OSTI)

    Skiff, Fred; Davidson, Ronald C.

    2013-05-15

    Each year, the annual meeting of the APS Division of Plasma Physics (DPP) brings together a broad representation of the many active subfields of plasma physics and enjoys an audience that is equally diverse. The meeting was well attended and largely went as planned despite the interventions of hurricane Sandy which caused the city of Providence to shut-down during the first day of the conference. The meeting began on Monday morning with a review of the physics of cosmic rays, 2012 being the 100th year since their discovery, which illustrated the central importance of plasma physics to astrophysical problems. Subsequent reviews covered the importance of tokamak plasma boundaries, progress towards ignition on the National Ignition Facility (NIF), and magnetized plasma turbulence. The Maxwell prize address, by Professor Liu Chen, covered the field of nonlinear Alfvn wave physics. Tutorial lectures were presented on the verification of gyrokinetics, new capabilities in laboratory astrophysics, magnetic flux compression, and tokamak plasma start-up.

  13. A measurement of hadron production cross sections for the simulation of accelerator neutrino beams and a search for muon-neutrino to electron-neutrino oscillations in the delta m**2 about equals 1-eV**2 region

    SciTech Connect (OSTI)

    Schmitz, David W.; /Columbia U.

    2008-01-01

    A measurement of hadron production cross-sections for the simulation of accelerator neutrino beams and a search for muon neutrino to electron neutrino oscillations in the {Delta}m{sup 2} {approx} 1 eV{sup 2} region. This dissertation presents measurements from two different high energy physics experiments with a very strong connection: the Hadron Production (HARP) experiment located at CERN in Geneva, Switzerland, and the Mini Booster Neutrino Experiment (Mini-BooNE) located at Fermilab in Batavia, Illinois.

  14. IceCube: An Instrument for Neutrino Astronomy

    SciTech Connect (OSTI)

    IceCube Collaboration; Halzen, F.; Klein, S.

    2010-06-04

    Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer-scale neutrino detectors were required. The first such instrument, IceCube, is near completion and taking data. The IceCube project transforms a cubic kilometer of deep and ultra-transparent Antarctic ice into a particle detector. A total of 5,160 optical sensors are embedded into a gigaton of Antarctic ice to detect the Cherenkov light emitted by secondary particles produced when neutrinos interact with nuclei in the ice. Each optical sensor is a complete data acquisition system, including a phototube, digitization electronics, control and trigger systems and LEDs for calibration. The light patterns reveal the type (flavor) of neutrino interaction and the energy and direction of the neutrino, making neutrino astronomy possible. The scientific missions of IceCube include such varied tasks as the search for sources of cosmic rays, the observation of Galactic supernova explosions, the search for dark matter, and the study of the neutrinos themselves. These reach energies well beyond those produced with accelerator beams.

  15. A Sterile-Neutrino Search with the MINOS Experiment

    SciTech Connect (OSTI)

    Rodrigues, Philip; /Oxford U.

    2010-09-01

    The MINOS experiment is a long-baseline neutrino oscillation experiment in the the NuMI beamline at Fermilab, USA. Using a near detector at 1 km distance from the neutrino production target, and a far detector at 735 km from the target, it is designed primarily to measure the disappearance of muon neutrinos. This thesis presents an analysis using MINOS data of the possibility of oscil- lation of the neutrinos in the NuMI beam to a hypothetical sterile flavour, which would have no Standard Model couplings. Such oscillations would result in a deficit in the neutral current interaction rate in the MINOS far detector relative to the expectation derived from the near detector data. The method used to identify neutral current and charged current events in the MINOS detectors is described and a new method of predicting and fitting the far detector spectrum presented, along with the effects of systematic uncertainties on the sterile neutrino oscillation analysis. Using this analysis, the fraction f{sub s} of the disappearing neutrinos that go to steriles is constrained to be below 0.15 at the 90% confidence level in the absence of electron neutrino appearance in the NuMI beam. With electron appearance at the CHOOZ limit, f{sub s} < 0.41 at 90% C.L.

  16. Neutrinoless double beta decay and future neutrino oscillation precision experiments

    SciTech Connect (OSTI)

    Choubey, Sandhya [Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP (United Kingdom); Rodejohann, Werner [Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse, D-85748 Garching (Germany)

    2005-08-01

    We discuss to what extent future precision measurements of neutrino mixing observables will influence the information we can draw from a measurement of (or an improved limit on) neutrinoless double beta decay. Whereas the {delta}m{sup 2} corresponding to solar and atmospheric neutrino oscillations are expected to be known with good precision, the parameter {theta}{sub 12} will govern a large part of the uncertainty. We focus, in particular, on the possibility of distinguishing the neutrino mass hierarchies and on setting a limit on the neutrino mass. We give the largest allowed values of the neutrino masses which allow to distinguish the normal from the inverted hierarchy. All aspects are discussed as a function of the uncertainty stemming from the involved nuclear matrix elements. The implications of a vanishing, or extremely small, effective mass are also investigated. By giving a large list of possible neutrino mass matrices and their predictions for the observables, we finally explore how a measurement of (or an improved limit on) neutrinoless double beta decay can help to identify the neutrino mass matrix if more precise values of the relevant parameters are known.

  17. DIFFUSE PeV NEUTRINOS FROM GAMMA-RAY BURSTS

    SciTech Connect (OSTI)

    Liu, Ruo-Yu; Wang, Xiang-Yu [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)] [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

    2013-04-01

    The IceCube Collaboration recently reported the potential detection of two cascade neutrino events in the energy range 1-10 PeV. We study the possibility that these PeV neutrinos are produced by gamma-ray bursts (GRBs), paying special attention to the contribution by untriggered GRBs that elude detection due to their low photon flux. Based on the luminosity function, rate distribution with redshift and spectral properties of GRBs, we generate, using a Monte Carlo simulation, a GRB sample that reproduces the observed fluence distribution of Fermi/GBM GRBs and an accompanying sample of untriggered GRBs simultaneously. The neutrino flux of every individual GRB is calculated in the standard internal shock scenario, so that the accumulative flux of the whole samples can be obtained. We find that the neutrino flux in PeV energies produced by untriggered GRBs is about two times higher than that produced by the triggered ones. Considering the existing IceCube limit on the neutrino flux of triggered GRBs, we find that the total flux of triggered and untriggered GRBs can reach at most a level of {approx}10{sup -9} GeV cm{sup -2} s{sup -1} sr{sup -1}, which is insufficient to account for the reported two PeV neutrinos. Possible contributions to diffuse neutrinos by low-luminosity GRBs and the earliest population of GRBs are also discussed.

  18. Neutrino Oscillation Parameter Sensitivity in Future Long-Baseline Experiments

    SciTech Connect (OSTI)

    Bass, Matthew

    2014-01-01

    The study of neutrino interactions and propagation has produced evidence for physics beyond the standard model and promises to continue to shed light on rare phenomena. Since the discovery of neutrino oscillations in the late 1990s there have been rapid advances in establishing the three flavor paradigm of neutrino oscillations. The 2012 discovery of a large value for the last unmeasured missing angle has opened the way for future experiments to search for charge-parity symmetry violation in the lepton sector. This thesis presents an analysis of the future sensitivity to neutrino oscillations in the three flavor paradigm for the T2K, NO A, LBNE, and T2HK experiments. The theory of the three flavor paradigm is explained and the methods to use these theoretical predictions to design long baseline neutrino experiments are described. The sensitivity to the oscillation parameters for each experiment is presented with a particular focus on the search for CP violation and the measurement of the neutrino mass hierarchy. The variations of these sensitivities with statistical considerations and experimental design optimizations taken into account are explored. The effects of systematic uncertainties in the neutrino flux, interaction, and detection predictions are also considered by incorporating more advanced simulations inputs from the LBNE experiment.

  19. Sterile neutrinos with secret interactions — lasting friendship with cosmology

    SciTech Connect (OSTI)

    Chu, Xiaoyong; Dasgupta, Basudeb; Kopp, Joachim

    2015-10-06

    Sterile neutrinos with mass ≃1 eV and order 10% mixing with active neutrinos have been proposed as a solution to anomalies in neutrino oscillation data, but are tightly constrained by cosmological limits. It was recently shown that these constraints are avoided if sterile neutrinos couple to a new MeV-scale gauge boson A{sup ′}. However, even this scenario is restricted by structure formation constraints when A{sup ′}-mediated collisional processes lead to efficient active-to-sterile neutrino conversion after neutrinos have decoupled. In view of this, we reevaluate in this paper the viability of sterile neutrinos with such “secret” interactions. We carefully dissect their evolution in the early Universe, including the various production channels and the expected modifications to large scale structure formation. We argue that there are two regions in parameter space — one at very small A{sup ′} coupling, one at relatively large A{sup ′} coupling — where all constraints from big bang nucleosynthesis (BBN), cosmic microwave background (CMB), and large scale structure (LSS) data are satisfied. Interestingly, the large A{sup ′} coupling region is precisely the region that was previously shown to have potentially important consequences for the small scale structure of dark matter halos if the A{sup ′} boson couples also to the dark matter in the Universe.

  20. FFAG ACCELERATOR PROTON DRIVER FOR NEUTRINO FACTORY.

    SciTech Connect (OSTI)

    RUGGIERO, A.

    2005-06-21

    This paper is the summary of a conceptual study of a Proton Driver for Neutrino Factory based on the use of a Fixed-Field Alternating-Gradient (FFAG) Accelerator. The required proton energy range for an optimum neutrino production is 5 to 12 GeV. This can be accomplished with a group of three concentric rings each with 807 m circumference [1]. FFAG Accelerators [2] have the capability to accelerate charged particles over a large momentum range ({+-}30-50%) and the feature of constant bending and focusing fields. Particles can be accelerated very fast at the rate given by the accelerating field of RF cavities placed in proper locations between magnets. The performance of FFAG accelerators is to be placed between that of Super-Conducting Linear Accelerators (SCL), with which they share the fast acceleration rate, and Rapid-Cycling Synchrotrons (RCS), as they allow the beam to re-circulate over fewer revolutions. Brookhaven National Laboratory is involved in the study of feasibility of FFAG Accelerators to accelerate intense beams of protons in the GeV energy range for a variety of applications the most important of which is the Upgrade of the Alternating Gradient Synchrotron (AGS) with a new FFAG injector [3] accelerating from 400 MeV to 1.5 GeV. The ring would be housed in the AGS tunnel and has henceforth a circumference of 807 m.

  1. Kuraray Europe GmbH Division TROSIFOL | Open Energy Information

    Open Energy Info (EERE)

    Europe GmbH Division TROSIFOL Jump to: navigation, search Name: Kuraray Europe GmbH (Division TROSIFOL) Place: Troisdorf, North Rhine-Westphalia, Germany Zip: 53840 Product: Maker...

  2. Nevada Division of State Lands | Open Energy Information

    Open Energy Info (EERE)

    State Lands Jump to: navigation, search Logo: Nevada Division of State Lands Name: Nevada Division of State Lands Address: 901 S. Stewart St., Suite 5003 Place: Carson City, Nevada...

  3. Nevada Division of Water Resources | Open Energy Information

    Open Energy Info (EERE)

    Division of Water Resources Name: Nevada Division of Water Resources Address: 901 S. Stewart St., Suite 2002 Place: Carson city, Nevada Zip: 89701 Phone Number: 775-684-2800...

  4. Alaska Division of Water Permit Fees | Open Energy Information

    Open Energy Info (EERE)

    Water Permit Fees Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Alaska Division of Water Permit Fees Author Alaska Division of Water Published...

  5. Utah Division of State History | Open Energy Information

    Open Energy Info (EERE)

    History Jump to: navigation, search Logo: Utah Division of State History Name: Utah Division of State History Address: 300 S. Rio Grande St. Place: Salt Lake City, Utah Zip: 84101...

  6. 16 TAC 3 - Oil and Gas Division | Open Energy Information

    Open Energy Info (EERE)

    - Oil and Gas Division Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: 16 TAC 3 - Oil and Gas DivisionLegal Abstract This...

  7. Louisiana DNR Oil and Gas Division | Open Energy Information

    Open Energy Info (EERE)

    Louisiana DNR Oil and Gas Division Jump to: navigation, search Name: Louisiana DNR Oil and Gas Division Address: P.O. Box 94396 Place: Louisiana Zip: 70804-9396 Website:...

  8. WDEQ-Water Quality Division | Open Energy Information

    Open Energy Info (EERE)

    Quality Division Jump to: navigation, search Name: WDEQ-Water Quality Division Abbreviation: WDEQ WQD Address: 122 West 25th Street 3W Place: Cheyenne, Wyoming Zip: 82002 Phone...

  9. Chemical Technology Division. Annual technical report, 1995

    SciTech Connect (OSTI)

    Laidler, J.J.; Myles, K.M.; Green, D.W.; McPheeters, C.C.

    1996-06-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1995 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (3) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (4) processes for separating and recovering selected elements from waste streams, concentrating low-level radioactive waste streams with advanced evaporator technology, and producing {sup 99}Mo from low-enriched uranium; (5) electrometallurgical treatment of different types of spent nuclear fuel in storage at Department of Energy sites; and (6) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems.

  10. Self-gravity in neutrino-dominated accretion disks

    SciTech Connect (OSTI)

    Liu, Tong; Yu, Xiao-Fei; Gu, Wei-Min; Lu, Ju-Fu

    2014-08-10

    We present the effects of self-gravity on the vertical structure and neutrino luminosity of the neutrino-dominated accretion disks in cylindrical coordinates. It is found that significant changes of the structure appear in the outer region of the disk, especially for high accretion rates (e.g., ? 1 M{sub ?} s{sup 1}), and thus cause the slight increase in the neutrino luminosity. Furthermore, the gravitational instability of the disk is reviewed by the vertical distribution of the Toomre parameter, which may account for the late-time flares in gamma-ray bursts and the extended emission in short-duration gamma-ray bursts.

  11. Atmospheric electron neutrinos in the MINOS far detector

    SciTech Connect (OSTI)

    Speakman, Benjamin Phillip; /Minnesota U.

    2007-01-01

    Neutrinos produced as a result of cosmic-ray interactions in the earth's atmosphere offer a powerful probe into the nature of this three-membered family of low-mass, weakly-interacting particles. Ten years ago, the Super-Kamiokande Experiment has confirmed earlier indications that neutrinos undergo lepton-flavor oscillations during propagation, proving that they are massive contrary to the previous Standard Model assumptions. The Soudan Underground Laboratory, located in northern Minnesota, was host to the Soudan2 Experiment, which has made important contributions to atmospheric neutrino research. This same lab has more recently been host to the MINOS far detector, a neutrino detector which serves as the downstream element of an accelerator-based long-baseline neutrino-oscillation experiment. This thesis has examined 418.5 live days of atmospheric neutrino data (fiducial exposure of 4.18 kton-years) collected in the MINOS far detector prior to the activation of the NuMI neutrino beam, with a specific emphasis on the investigation of electron-type neutrino interactions. Atmospheric neutrino interaction candidates have been selected and separated into showering or track-like events. The showering sample consists of 89 observed events, while the track-like sample consists of 112 observed events. Based on the Bartol atmospheric neutrino flux model of Barr et al. plus a Monte Carlo (MC) simulation of interactions in the MINOS detector, the expected yields of showering and track-like events in the absence of neutrino oscillations are 88.0 {+-} 1.0 and 149.1 {+-} 1.0 respectively (where the uncertainties reflect only the limited MC statistics). Major systematic uncertainties, especially those associated with the flux model, are cancelled by forming a double ratio of these observed and expected yields: R{sup data}{sub trk/shw}/R{sup MC}{sub trk/shw} = 0.74{sup +0.12}{sub -01.0}(stat.) {+-} 0.04 (syst.) This double ratio should be equal to unity in the absence of

  12. Research in theoretical nuclear and neutrino physics. Final report

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Research in theoretical nuclear and neutrino physics. Final report Citation Details In-Document Search Title: Research in theoretical nuclear and neutrino physics. Final report The main focus of the research supported by the nuclear theory grant DE-FG02-04ER41319 was on studying parton dynamics in high-energy heavy ion collisions, perturbative approach to charm production and its contribution to atmospheric neutrinos, application of AdS/CFT approach to

  13. Measurement of Nuclear Dependence in Inclusive Charged Current Neutrino Scattering

    SciTech Connect (OSTI)

    Tice, Brian George

    2014-01-01

    Neutrino experiments use heavy nuclei (C, Fe, Pb) to achieve necessary statistics. However, the use of heavy nuclei exposes these experiments to the nuclear dependence of neutrino-nucleus cross sections, which are poorly known and difficult to model. This dissertation presents an analysis of the nuclear dependence of inclusive chargedcurrent neutrino scattering using events in carbon, iron, lead, and scintillator targets of the MINERvA detector. MINERvA (Main INjector ExpeRiment for -A) is a few-GeV neutrinonucleus scattering experiment at Fermilab.

  14. TO: Procurement Directors FROM: Director, Policy Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    9 DATE: March 21, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: SBA Final Rule affecting the 8(a) Business Development Program SUMMARY: On February 11, 2011, the Small Business Administration (SBA) issued the attached final rule revising the regulations governing the 8(a) Business Development program, small business size regulations, and Small Disadvantaged Business (SDB) status

  15. STATEOFNEWMEXICO ENVIRONMENT DEPARTMENT ENVIRONMENTAL HEALTH DIVISION,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    STATEOFNEWMEXICO ENVIRONMENT DEPARTMENT ENVIRONMENTAL HEALTH DIVISION, HAZARDOUS WASTE BUREAU, Complainant UNITED STATES DEPARTMENT OF ENERGY, and NUCLEAR WASTE PARTNERSIDP, LLC Respondents WASTE ISOLATION PILOT PLANT EDDY COUNTY, NEW MEXICO ) ) ) ) ) ) ) ) ) ) ) ) ) Compliance Order No. HWB-14-21 ORDER GRANTING AN EXTENSION OF TIME TO FILE AN ANSWER AND REQUEST FOR HEARING Responde~ts United States Department of Energy and Nuclear Waste Partnership, LLC, on December 22, 2014, filed an unopposed

  16. Earth Sciences Division annual report 1980

    SciTech Connect (OSTI)

    Not Available

    1981-07-01

    Summaries of the highlights of programs in the Earth Sciences Division are presented under four headings; Geosciences, Geothermal Energy Development, Nuclear Waste Isolation, and Marine Sciences. Utilizing both basic and applied research in a wide spectrum of topics, these programs are providing results that will be of value in helping to secure the nation's energy future. Separate abstracts have been prepared for each project for inclusion in the Energy Data Base. (DMC)

  17. DOE'S geothermal division: A period of transition

    SciTech Connect (OSTI)

    Jelacic, Allan J.; Reed, Marshall

    1996-01-24

    The transition that the Department of Energy's geothemal research program is undergoing is discussed. This transitional period began last year and will continue at least through final implementation of the Department's reorganization and downsizing. Current and recently completed R&D programs are reviewed. New initiatives are outlined. The foci and direction of the Division's activities of particular interest to the geothermal research community are addressed.

  18. TO: Procurement Directors FROM: Director, Policy Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    POLICY FLASH 2011-55 DATE: March 14, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Acquisition Guide 19.1 SUMMARY: Minor administrative changes were made to Acquisition Guide Chapter 19.1 as follows: 1) the title and associated link were changed to read: "Summary of Small Business Administration and Department of Energy Partnership Agreement," and 2) effective date in

  19. TO: Procurement Directors FROM: Director, Policy Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    63 DATE: April 7, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Updated Reporting Requirement Checklists and Research Performance Progress Report (RPPR) SUMMARY: Policy Flash 2011-46, transmitted updated copies of the Reporting Requirements Checklist to add coverage for For-Profit audits. This Flash transmits additional updates to the checklists to clarify the submission

  20. TO: Procurement Directors FROM: Director, Policy Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    POLICY FLASH 2011-64 DATE: April 7, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Publication of Federal Acquisition Circular 2005-51 SUMMARY: Attached for your information is a summary of Federal Acquisition Circular 2005-51 which makes two changes to the Federal Acquisition Regulation involving the small business program and a modification of Standard Form 26. This Flash and

  1. TO: Procurement Directors FROM: Director, Policy Division

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    85 DATE: June 23, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: U.S. Department of Energy - Guide to Financial Assistance - Audit Requirements for For-Profit Organizations SUMMARY: Policy Flash 2011-46, which was issued in association with the Office of Risk Management, provided the final audit guidance documents to assist for-profit recipients in complying with 10 CFR 600.316.

  2. TO: Procurement Directors FROM: Director, Policy Division

    Office of Environmental Management (EM)

    3-33 DATE: February 27, 2013 TO: Procurement Directors FROM: Director, Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: DOE O 206.2 Identity, Credential, and Access Management (ICAM) SUMMARY: The Department issued a Contractor Requirements Document (CRD) for the subject Directive on February 19, 2013. Under the Department's Directives Program (DOE Order 251.1C), Heads of Field Elements are generally responsible for

  3. TO: Procurement Directors FROM: Director, Policy Division

    Office of Environmental Management (EM)

    2 DATE: February 11, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Department of Energy Acquisition Regulation (DEAR) Final Rule for Subchapters A, B, and C SUMMARY: Department of Energy Acquisition Regulation (DEAR) Final Rule for Subchapters A, B, and C was published February 11, 2011, in the Federal Register 76 FR 7685. The changes are effective March 14, 2011. This Flash will

  4. TO: Procurement Directors FROM: Director, Policy Division

    Office of Environmental Management (EM)

    POLICY FLASH 2011-40 DATE: February 9, 2011 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Issue a New Department of Energy Acquisition Guide Chapter 6.5 Competition Advocate Responsibilities and Revise Pages in Chapters 6.1 and 7.1. SUMMARY: Attached is a new chapter of the DOE Acquisition Guide entitled Competition Advocate Responsibilities. It provides a comprehensive overview of

  5. California Division of Oil, Gas, and Geothermal Resources | Open...

    Open Energy Info (EERE)

    reservoirs. Division requirements encourage wise development of California's oil, gas, and geothermal resources while protecting the environment.2 References "CDOGGR...

  6. Tempe Transportation Division: LNG Turbine Hybrid Electric Buses

    SciTech Connect (OSTI)

    Not Available

    2002-02-01

    Fact sheet describes the performance of liquefied natural gas (LNG) turbine hybrid electric buses used in Tempe's Transportation Division.

  7. Chemical Technology Division annual technical report, 1994

    SciTech Connect (OSTI)

    1995-06-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1994 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion; (3) methods for treatment of hazardous waste and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from waste streams, concentrating radioactive waste streams with advanced evaporator technology, and producing {sup 99}Mo from low-enriched uranium for medical applications; (6) electrometallurgical treatment of the many different types of spent nuclear fuel in storage at Department of Energy sites; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources and novel ceramic precursors; materials chemistry of superconducting oxides, electrified metal/solution interfaces, molecular sieve structures, and impurities in scrap copper and steel; and the geochemical processes involved in mineral/fluid interfaces and water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  8. Chemical Technology Division, Annual technical report, 1991

    SciTech Connect (OSTI)

    Not Available

    1992-03-01

    Highlights of the Chemical Technology (CMT) Division`s activities during 1991 are presented. In this period, CMT conducted research and development in the following areas: (1) electrochemical technology, including advanced batteries and fuel cells; (2) technology for fluidized-bed combustion and coal-fired magnetohydrodynamics; (3) methods for treatment of hazardous and mixed hazardous/radioactive waste; (4) the reaction of nuclear waste glass and spent fuel under conditions expected for an unsaturated repository; (5) processes for separating and recovering transuranic elements from nuclear waste streams; (6) recovery processes for discharged fuel and the uranium blanket in the Integral Fast Reactor (IFR); (7) processes for removal of actinides in spent fuel from commercial water-cooled nuclear reactors and burnup in IFRs; and (8) physical chemistry of selected materials in environments simulating those of fission and fusion energy systems. The Division also conducts basic research in catalytic chemistry associated with molecular energy resources; chemistry of superconducting oxides and other materials of interest with technological application; interfacial processes of importance to corrosion science, catalysis, and high-temperature superconductivity; and the geochemical processes involved in water-rock interactions occurring in active hydrothermal systems. In addition, the Analytical Chemistry Laboratory in CMT provides a broad range of analytical chemistry support services to the technical programs at Argonne National Laboratory (ANL).

  9. Improved search for muon-neutrino to electron-neutrino oscillations in MINOS

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adamson, P.

    2011-10-27

    The authors report the results of a search for νe appearance in νμ beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 x 1020 protons on the NuMI target at Fermilab, they find that 2 sin2 (θ23 sin2 (θ13) < 0.12 (0.20) at 90% confidence level for δ = 0 and the normal (inverted) neutrino mass hierarchy, with a best fit of 2 sin2θ23) sin 2 (2θ13) = 0.041-0.031 +0.047 (0.079-0.053 +0.071). The θ13= 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.

  10. A search for muon neutrino to electron neutrino oscillations in the MINOS Experiment

    SciTech Connect (OSTI)

    Ochoa Ricoux, Juan Pedro; /Caltech

    2009-10-01

    We perform a search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations, a process which would manifest a nonzero value of the {theta}{sub 13} mixing angle, in the MINOS long-baseline neutrino oscillation experiment. The analysis consists of searching for an excess of {nu}{sub e} charged-current candidate events over the predicted backgrounds, made mostly of neutral-current events with high electromagnetic content. A novel technique to select electron neutrino events is developed, which achieves an improved separation between the signal and the backgrounds, and which consequently yields a better reach in {theta}{sub 13}. The backgrounds are predicted in the Far Detector from Near Detector measurements. An excess is observed in the Far Detector data over the predicted backgrounds, which is consistent with the background-only hypothesis at 1.2 standard deviations.

  11. CAPTAIN-Minerνa. Neutrino-Argon Scattering in a Medium-Energy Neutrino Beam

    SciTech Connect (OSTI)

    Mauger, Christopher M.

    2015-10-29

    The NuMI facility at Fermilab is currently providing an extremely intense beam of neutrinos for the NOνA, MINERνA and MINOS+ experiments. By installing the 5-ton CAPTAIN liquid argon TPC in front of the MINERνA detector in the NuMI beamline and combining the data from the CAPTAIN, MINERνA and MINOS+ detectors, a broad program of few-GeV neutrino cross section measurements on argon can be pursued. These measurements will be extremely helpful for future oscillation experiments. By directly comparing the cross sections on argon to MINERνA’s scintillator (CH) target, a new level of precision can be achieved in the measurements of the effects of the nucleus on neutrino interactions. These effects are of interest to not only the particle physics but also the nuclear physics community. This document describes in detail the physics goals of the CAPTAIN-MINERνA experiment, in addition to a first estimate of the technical resources required to install, commission and operate the CAPTAIN detector in front of the MINERVA detector.

  12. Search for neutrino oscillations by detecting UNK-1 600-GeV neutrino beams at Gran Sasso (Italy)

    SciTech Connect (OSTI)

    Vasil`ev, P.S.; Kuznetsov, A.E.; Kuznetsov, E.P.

    1995-12-01

    The possibility of formation of neutrino beams from the 600-GeV UNK-1 accelerator toward Gran Sasso (Italy) and of study neutrino oscillations with the ICARUS detector is demonstrated. The proposed experiment is sensitive to {Delta}m{sup 2} values down to 10{sup -3} eV{sup 2} at maximum neutrino mixing and to sin{sup 2}2{theta} values down to 6 x 10{sup -3} at {Delta}m{sup 2} {approximately} 2 x 10{sup -2} eV{sup 2}. 21 refs., 6 figs., 3 tabs.

  13. Direct reactions for nuclear structure and nuclear astrophysics

    SciTech Connect (OSTI)

    Jones, Katherine Louise

    2014-12-18

    Direct reactions are powerful probes for studying the atomic nucleus. Modern direct reaction studies are illuminating both the fundamental nature of the nucleus and its role in nucleosynthetic processes occurring in the cosmos. This report covers experiments using knockout reactions on neutron-deficient fragmentation beams, transfer reactions on fission fragment beams, and theoretical sensitivity studies relating to the astrophysical r-process. Results from experiments on 108,106Sn at the NSCL, and on 131Sn at HRIBF are presented as well as the results from the nucleosynthesis study.

  14. SECTION I. NUCLEAR STRUCTURE, FUNDAMENTAL INTERACTIONS AND ASTROPHYSICS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NUCLEAR STRUCTURE, FUNDAMENTAL INTERACTIONS AND ASTROPHYSICS Splitting of the GMR and GQR in 154Sm D.H. Youngblood, Y.-W. Lui and H.L. Clark Giant Monopole Strength in 58Ni Y.-W. Lui, H.L. Clark and D.H. Youngblood Folding Model Analysis of the Giant Resonance Region of 116Sn H.L. Clark, Y.-W. Lui and D.H. Youngblood Double Folding Optical Model Potentials for Weakly Bound p-shell Nuclei L. Trache, A. Azhari, H.L. Clark, C.A. Gagliardi, Y.-W. Lui, A.M. Mukhamedzhanov, R.E. Tribble and F.

  15. EMPIRE: A Reaction Model Code for Nuclear Astrophysics

    SciTech Connect (OSTI)

    Palumbo, A.; Herman, M.; Capote, R.

    2014-06-15

    The correct modeling of abundances requires knowledge of nuclear cross sections for a variety of neutron, charged particle and γ induced reactions. These involve targets far from stability and are therefore difficult (or currently impossible) to measure. Nuclear reaction theory provides the only way to estimate values of such cross sections. In this paper we present application of the EMPIRE reaction code to nuclear astrophysics. Recent measurements are compared to the calculated cross sections showing consistent agreement for n-, p- and α-induced reactions of strophysical relevance.

  16. Electron Neutrino Appearance in the MINOS Experiment

    SciTech Connect (OSTI)

    Holin, Anna Maria; /University Coll. London

    2010-06-01

    The MINOS experiment is a long-baseline neutrino oscillation experiment which sends a high intensity muon neutrino beam through two functionally identical detectors, a Near detector at the Fermi National Accelerator Laboratory in Illinois, 1km from the beam source, and a Far detector, 734km away, in the Soudan Mine in Minnesota. MINOS may be able to measure the neutrino mixing angle parameter sin{sup 2} 2{theta}{sub 13} for the first time. Detector granularity, however, makes it very hard to distinguish any {nu}{sub e} appearance signal events characteristic of a non-zero value of {theta}{sub 13} from background neutral current (NC) and short-track {nu}{sub {mu}} charged current (CC) events. Also, uncertainties in the hadronic shower modeling in the kinematic region characteristic of this analysis are relatively large. A new data-driven background decomposition method designed to address those issues is developed and its results presented. By removing the long muon tracks from {nu}{sub {mu}}-CC events, the Muon Removed Charge Current (MRCC) method creates independent pseudo-NC samples that can be used to correct the MINOS Monte Carlo to agree with the high-statistics Near detector data and to decompose the latter into components so as to predict the expected Far detector background. The MRCC method also provides an important cross-check in the Far detector to test the background in the signal selected region. MINOS finds a 1.0-1.5 {sigma} {nu}{sub e}-CC excess above background in the Far detector data, depending on method used, for a total exposure of 3.14 x 10{sup 20} protons-on-target. Interpreting this excess as signal, MINOS can set limits on sin{sup 2} 2{theta}{sub 13}. Using the MRCC method, MINOS sets a limit of sin{sup 2} 2{theta}{sub 13} < 0.265 at the 90% confidence limit for a CP-violating phase {delta} = 0.

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