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Neutrino oscillation physics with BooNE

Description: A proposal was submitted to Fermilab for a Booster Neutrino Experiment (BooNE) to confirm the discovery of neutrino oscillations at LANL using a Liquid Scintillator Neutrino Detector (LSND). The location of the experiment at the Fermilab Booster will provide for higher signal rates than were possible at LSND by about an order of magnitude. BooNE will also provide an opportunity for observing the signal under very different conditions and with different systematics than were present at LSND. The muon collider will provide an opportunity to further explore this region of parameter space with a different set of systematics. Most important will be that the neutrino flux will be accurately known, since the current of the parent muon beam can be measured very precisely. This source will provide a and flux equal in magnitude and with easily calculable energy and spatial distributions.
Date: April 1, 1998
Creator: Stefanski, R.J.
Partner: UNT Libraries Government Documents Department

A Large Neutrino Detector Facility at the Spallation Neutron Source at Oak Ridge National Laboratory

Description: The ORLaND (Oak Ridge Large Neutrino Detector) collaboration proposes to construct a large neutrino detector in an underground experimental hall adjacent to the first target station of the Spallation Neutron Source (SNS) at the Oak Ridge National Laboratory. The main mission of a large (2000 ton) Scintillation-Cherenkov detector is to measure {bar {nu}}{sub {mu}} {r_arrow} {bar {nu}}{sub e} neutrino oscillation parameters more accurately than they can be determined in other experiments, or significantly extending the covered parameter space below (sin'20 {le} 10{sup {minus}4}). In addition to the neutrino oscillation measurements, ORLaND would be capable of making precise measurements of sin{sup 2} {theta}{sub W}, search for the magnetic moment of the muon neutrino, and investigate the anomaly in the KARMEN time spectrum, which has been attributed to a new neutral particle. With the same facility an extensive program of measurements of neutrino nucleus cross sections is also planned to support nuclear astrophysics.
Date: February 14, 1999
Creator: Efremenko, Y.V.
Partner: UNT Libraries Government Documents Department

IceCube: An Instrument for Neutrino Astronomy

Description: 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.
Date: June 4, 2010
Creator: Collaboration, IceCube; Halzen, F. & Klein, S.
Partner: UNT Libraries Government Documents Department

Relic neutrino detector

Description: Probably the most promising way of detecting cosmic neutrinos is measuring the mechanical force exerted by clastic scattering of cosmic neutrinos from macroscopic targets. The expected acceleration is ~10<sup>-23</sup>cm/s<sup>2</sup> for Dirac neutrinos of mass ~10 eV and local density ~10<sup>7</sup>/cm<sup>3</sup>. A novel torsion balance design is presented, which addresses the sensitivity-limiting factors of existing balances, such as seismic and thermal noise, and angular readout resolution and stability.
Date: January 27, 1999
Creator: Hagmann, C.
Partner: UNT Libraries Government Documents Department

Development of a compact 20 MeV gamma-ray source for energy calibration at the Sudbury Neutrino Observatory

Description: The Sudbury Neutrino Observatory (SNO) is a real-time neutrino detector under construction near Sudbury, Ontario, Canada. SNO collaboration is developing various calibration sources in order to determine the detector response completely. This paper describes briefly the calibration sources being developed by the collaboration. One of these, a compact {sup 3}H(p,{gamma}){sup 4}He source, which produces 20-MeV {gamma}-rays, is described.
Date: December 31, 1995
Creator: Poon, A.W.P.; Browne, M.C.; Robertson, R.G.H.; Waltham, C.E. & Kherani, N.P.
Partner: UNT Libraries Government Documents Department

State of physics at the end of the 20. century: Massive neutrinos?

Description: A brief review of neutrino masses is presented with focus on how masses might appear in unified models. A fall 1996 status report of the LSND (Liquid Scintillator Neutrino Detector) experiment at Los Alamos is given; the statistical evidence for neutrino oscillations is becoming stronger. A summary of a unified model based on SO(18) shows possible complications in understanding neutrino masses.
Date: October 1, 1997
Creator: Slansky, R.
Partner: UNT Libraries Government Documents Department

NewtonPlus: Approximating Relativistic Effects in Supernova Simulations

Description: We propose an approximation to full relativity that captures the main gravitational effects of dynamical importance in supernovae. The conceptual link between this formalism and the Newtonian limit is such that it could likely be implemented relatively easily in existing multidimensional Newtonian gravitational hydrodynamics codes employing a Poisson solver. As a test of the formalism's utility, we display results for rapidly rotating (and therefore highly deformed) neutron stars.
Date: August 21, 2001
Creator: Cardall, C.Y.
Partner: UNT Libraries Government Documents Department

Progress toward a Km-scale neutrino detector in the deep ocean

Description: The best particles for observing distant objects are photons and neutrinos. Because of the neutrino`s weak interaction cross section, detectors suitable for astronomy must be very large and well shielded from cosmic rays. Eventually, a detector with the order of a square km of effective area will be needed for systematic observations of distant point sources such as active galactic nuclei. Prototype detectors are currently being developed at several sites in the ocean, at Lake Baikal, and in Antarctica. This talk summarizes the status of the projects that use the deep ocean for the detector medium and shielding: DUMAND, NESTOR and ANTARES. Technical developments will be needed for a future km-scale detector; progress on one of these, a digital electronic system, is also described.
Date: November 1, 1997
Creator: Stokstad, R.G.
Partner: UNT Libraries Government Documents Department

Results of the LSND search for {ovr {nu}}{sub {mu}} {yields} {ovr {nu}}{sub e} oscillations

Description: A search for {ovr {nu}}{sub {mu}}{yields}{ovr {nu}}{sub e} oscillations has been conducted at the Los Alamos Meson Physics Facility by using {ovr {nu}}{sub {mu}} from {mu}{sup +} decay at rest. The {ovr {nu}}{sub e} are detected via the reaction {ovr {nu}}{sub e}p {yields} e{sup +} n , correlated with a {gamma} from np {yields} d{gamma} (2.2 MeV). The use of tight cuts to identify e{sup +} events with correlated {gamma} rays yields 22 events with e{sup +} energy between 36 and 60 MeV and only 4.6 {plus_minus} 0.6 background events. The probability that this observation can be explained by statistical fluctuation is less than 10{sup -7}. Assuming these events are due to oscillations, a likelihood fit to all the e{sup +} events between 20 and 60 MeV has been performed to extract the oscillation parameters sin{sup 2} 2{theta} and {Delta}m{sup 2}. The favored region resulting from this fit is shown.
Date: July 1, 1996
Creator: Federspiel, F.J.
Partner: UNT Libraries Government Documents Department

Results from SAGE II

Description: The Russian-American Gallium solar neutrino Experiment (SAGE) began the second phase of operation (SAGE II) in September of 1992. Monthly measurements of the integral flux of solar neutrinos have been made with 55 tonnes of gallium. The K-peak results of the first nine runs of SAGE II give a capture rate of 66{sub -13}{sup +18} (stat) {sub -7}{sup +5} (sys) SNU. Combined with the SAGE I result of 73{sub -16}{sup +18} (stat) {sub -7}{sup 5} (sys) SNU, the capture rate is 69{sub -11}{sup +11} (stat) {sub -7}{sup +5} (sys) SNU. This represents only 52%--56% of the capture rate predicted by different Standard Solar Models.
Date: October 1, 1994
Creator: Nico, J. S.
Partner: UNT Libraries Government Documents Department

Effect of panel alignment and surface finish on bond strength

Description: The flexural strength of bonded acrylic is tested as a function of panel alignment and bond surface finish. Bond strength was shown to be highly dependent on both parameters with only a narrow range of values yielding a high strength bond. This study was performed for the heavy water-containing acrylic vessel for the Sudbury Neutrino Observatory detector.
Date: October 1, 1991
Creator: Wouters, J. M.; Doe, P. J. & Baker, W. E.
Partner: UNT Libraries Government Documents Department

High Energy Neutrinos with a Mediterranean Neutrino Telescope

Description: The high energy neutrino detection by a km{sup 3} Neutrino Telescope placed in the Mediterranean sea provides a unique tool to both determine the diffuse astrophysical neutrino flux and the neutrino nucleon cross section in the extreme kinematical region, which could unveil the presence of new physics. Here is performed a brief analysis of possible NEMO site performances.
Date: September 1, 2007
Creator: Borriello, E.; /Naples U. /INFN, Naples /Valencia U., IFIC; Cuoco, A.; U., /Aarhus; Mangano, G.; /Naples U. /INFN, Naples et al.
Partner: UNT Libraries Government Documents Department

MINOS near-detector coil design

Description: The 980-ton MINOS near detector will be installed in the new NuMI near hall at 100m below grade at Fermilab. It will be assembled from 282 1-inch thick steel plates. The planes are made from low carbon (1006), hot rolled steel and are toroidally magnetized. Each plane will be hung by two 'ears', which are extensions of the octagonal plane structure, similar to the hanging files in a file drawer. The plates have a center-to-center spacing of 5.94 cm. This document has been prepared for the 8/99 Conceptual Design Review of the MINOS near detector coil. It's main goal is to provide a set of references to previous documents and to assemble various design drawings and engineering calculations that have not been included in previous technical memos. It also provides some background material relevant for the coil implementation. Much of the text for this document is edited from the MINOS Detectors Technical Design Report.
Date: August 1, 1999
Creator: Nelson, J.K.; Coll., /William-Mary; Kilmer, J. & /Fermilab
Partner: UNT Libraries Government Documents Department

Accelerator-based neutrino oscillation experiments

Description: Neutrino oscillations were first discovered by experiments looking at neutrinos coming from extra-terrestrial sources, namely the sun and the atmosphere, but we will be depending on earth-based sources to take many of the next steps in this field. This article describes what has been learned so far from accelerator-based neutrino oscillation experiments, and then describe very generally what the next accelerator-based steps are. In section 2 the article discusses how one uses an accelerator to make a neutrino beam, in particular, one made from decays in flight of charged pions. There are several different neutrino detection methods currently in use, or under development. In section 3 these are presented, with a description of the general concept, an example of such a detector, and then a brief discussion of the outstanding issues associated with this detection technique. Finally, section 4 describes how the measurements of oscillation probabilities are made. This includes a description of the near detector technique and how it can be used to make the most precise measurements of neutrino oscillations.
Date: December 1, 2007
Creator: Harris, Deborah A.
Partner: UNT Libraries Government Documents Department

Study of electron and neutrino interactions. Final report

Description: This is the final report for the DOE-sponsored experimental particle physics program at Virginia Tech to study the properties of the Standard Model of strong and electroweak interactions. This contract (DE-AS05-80ER10713) covers the period from August 1, 1980 to January 31, 1993. Task B of this contract, headed by Professor Alexander Abashian, is described in this final report. This program has been pursued on many fronts by the researchers in a search for axions at SLAC, in electron-positron collisions in the AMY experiment at the TRISTAN collider in Japan, in measurements of muon decay properties in the MEGA and RHO experiments at the LAMPF accelerator, in a detailed analysis of scattering effects in the purported observation of a 17 keV neutrino at Oxford, in a search for a disoriented chiral condensate with the MiniMax experiment at Fermilab, and in an R&D program on resistive plate counters that could find use in low-cost high-quality charged particle detection at low rates.
Date: March 18, 1997
Creator: Abashian, A.
Partner: UNT Libraries Government Documents Department

The Sudbury Neutrino Observatory

Description: A report is given on the status of the Sudbury Neutrino Observatory, presently under construction in the Creighton nickel mine near Sudbury, Ontario in Canada. Focus is upon the technical factors involving a measurement of the charged-current and neutral-current interactions of solar neutrinos on deuterium.
Date: September 1, 1996
Creator: Hime, A.
Partner: UNT Libraries Government Documents Department

`HERON` as a dark matter detector?

Description: ``{bold HERON}``, which is the acronym for `` {bold He}lium: {bold Ro}ton detection of {bold N}eutrinos``, is a project whose principal goal is a next generation detector of solar neutrinos from the p-p and {sup 7}Be branches. It will utilize superfluid helium as the target material and employ event energy transport out of the target by phonon and roton processes unique to helium. Many of the challenges presented for dark matter detection are very similar to those for low energy solar neutrinos. We present new results from our feasibility studies for {bold HERON} which indicate an asymmetry in the roton emission distribution from stopping particles and the ability to detect simultaneously the ultraviolet fluorescence photons also emitted. These features are potentially valuable for solar neutrino detection and the question is explored as to whether or not the same helium technique could be valuable for WIMP dark matter detection.
Date: October 1, 1996
Creator: Adams, J.S.; Bandler, S.R.; Brouer, S.M.; Enss, C.; Lanou, R.E.; Maris, H.J. et al.
Partner: UNT Libraries Government Documents Department

Design of a neutrino oscillation experiment

Description: This is the final report of a one-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project sought to make a preliminary conceptual design and technical evaluation for a neutrino detector with high mass and particle identification capability. The detector will use recent improvements in imaging technology. In addition, a special Monte Carlo code was designed to address contamination of the muon neutrino beam by other particles. The combination of these two developments could lead to significant improvements in both neutrino production sources and neutrino detectors.
Date: October 1, 1996
Creator: Federspiel, F.
Partner: UNT Libraries Government Documents Department

The atmospheric neutrino flavor ratio in Soudan 2

Description: The Soudan 2 collaboration has measured the atmospheric neutrino flavor ratio with 2.63 kiloton years of exposure. The measured flavor ratio is 0.67 {+-} 0.15(stat) + 0.04--0.06(syst). The neutrino induced horizontal muon flux has been measured to be {Phi}{sub {mu}} = (4.12 {+-} 1.1 {+-} 0.58) {times} 10{sup {minus}13} cm{sup {minus}2} sr{sup {minus}1} s{sup {minus}1}.
Date: October 1, 1997
Creator: Goodman, M. & Collaboration, Soudan 2
Partner: UNT Libraries Government Documents Department

High energy physics program at Texas A&M University. Final report, April 1, 1995--March 31, 1996

Description: The experimental and theoretical high energy physics programs at Texas A&M University have continued their vigorous research activities over the past year. This is the final report on activities which have been supported through DOE grant DE-FG05-91ER40633. This report covers the period January 1, 1995 to December 31, 1995. The project includes a component which has used the Fermilab Tevatron, as part of the Collider Detector (CDF) collaboration. They have been involved in operations and theory work on supersymmetry (SUSY). Another component works with the MACRO experiment at the Gran Sasso Laboratory in l`Aquila, Italy, to study magnetic monopoles, astrophysical neutrinos, and cosmic ray phenomena. A third effort has been involved in developing an Expression of Interest and a Fermilab proposal for a large fine-grained magnetic sampling detector to be used for studying events inducted by accelerator or atmospheric neutrinos as a way to search for neutrino oscillations (MINOS). Finally the theoretical effort has addressed string theory, model building, SUSY phenomenology, astroparticle physics, and brain function and quantum mechanics.
Date: December 1, 1995
Partner: UNT Libraries Government Documents Department

ORLANDO -- Oak Ridge Large Neutrino Detector

Description: The authors discuss a proposal for construction of an Oak Ridge LArge Neutrino DetectOr (ORLANDO) to search for neutrino oscillations at the Spallation Neutron Source (SNS). A 4 MW SNS is proposed to be built at the Oak Ridge National Laboratory with the first stage to be operative around 2006. It will have two target stations, which makes it possible with a single detector to perform a neutrino oscillation search at two different distances. Initial plans for the placement of the detector and the discovery potential of such a detector are discussed.
Date: December 1, 1997
Creator: Bugg, W.; Cohn, H.; Efremenko, Yu.; Gabriel, T.; Kamyshkov, Yu.; Plasil, F. et al.
Partner: UNT Libraries Government Documents Department

Results of the whole GALLEX experiment

Description: After 5.5 years of data taking, GALLEX ended its experimental phase. The solar neutrino production rate, 76.4 {+-} 8 SNU represents about 55% of the predicted rate. The As tests prove, at the 1% level, the reliability of the technique and the detection of {sup 51}Cr neutrino, with the nominal efficiency (93.0 {+-} 8%), control the response of the detector to neutrinos in the solar energy range.
Date: January 1, 1998
Creator: Cribier, M.
Partner: UNT Libraries Government Documents Department

Detectors for Neutrino Physics at the First Muon Collider

Description: We consider possible detector designs for short-baseline neutrino experiments using neutrino beams produced at the First Muon Collider complex. The high fluxes available at the muon collider make possible high statistics deep-inelastic scattering neutrino experiments with a low-mass target. A design of a low-energy neutrino oscillation experiment on the ``tabletop`` scale is also discussed.
Date: April 1, 1998
Creator: Harris, D.A. & McFarland, K.S.
Partner: UNT Libraries Government Documents Department

The Fermilab long-baseline neutrino program

Description: 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.
Date: October 1, 1997
Creator: Goodman, M. & Collaboration, MINOS
Partner: UNT Libraries Government Documents Department