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The Numi Neutrino Beam
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Download or read book The NuMI Neutrino Beam written by and published by . This book was released on 2015 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis The NuMI Neutrino Beam at Fermilab by : Sacha E. Kopp
Download or read book The NuMI Neutrino Beam at Fermilab written by Sacha E. Kopp and published by . This book was released on 2004 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The NuMI Neutrino Beam at Fermilab by :
Download or read book The NuMI Neutrino Beam at Fermilab written by and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Neutrinos at the Main Injector (NuMI) facility at Fermilab began operations in late 2004. NuMI will deliver an intense [nu]{sub {mu}} beam of variable energy (2-20 GeV) directed into the Earth at 58 mrad for short (≈1km) and long (≈700-900 km) baseline experiments. Several aspects of the design and results from early commissioning runs are reviewed.
Book Synopsis Accelerator Systems and Instrumentation for the NuMI Neutrino Beam by : Robert Miles Zwaska
Download or read book Accelerator Systems and Instrumentation for the NuMI Neutrino Beam written by Robert Miles Zwaska and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Beam Tests of Ionization Chambers for the NuMI Neutrino Beam by :
Download or read book Beam Tests of Ionization Chambers for the NuMI Neutrino Beam written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have conducted tests at the Fermilab Booster of ionization chambers to be used as monitors of the NuMI neutrino beamline. The chambers were exposed to proton fluxes of up to 10[sup 12] particles/cm[sup 2]/1.56[micro]s. We studied space charge effects which can reduce signal collection from the chambers at large charged particle beam intensities.
Download or read book MINERvA written by Kevin S. McFarland and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: MINERvA is a dedicated neutrino cross-section experiment planned for the near detector hall of the NuMI neutrino beam at Fermilab. I summarize the detector design and physics capabilities of the experiment.
Book Synopsis Neutrino-Electron Scattering in MINERvA for Constraining the NuMI Neutrino Flux by :
Download or read book Neutrino-Electron Scattering in MINERvA for Constraining the NuMI Neutrino Flux written by and published by . This book was released on 2013 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrino-electron elastic scattering is used as a reference process to constrain the neutrino flux at the Main Injector (NuMI) beam observed by the MINERvA experiment. Prediction of the neutrino flux at accelerator experiments from other methods has a large uncertainty, and this uncertainty degrades measurements of neutrino oscillations and neutrino cross-sections. Neutrino-electron elastic scattering is a rare process, but its cross-section is precisely known. With a sample corresponding to $3.5\times10{̂20}$ protons on target in the NuMI low-energy neutrino beam, a sample of $120$ $\nu e-̂\to\nu e-̂$ candidate events were observed with a predicted background of $\approx 30$ events. This results in a flux constraint with $13\%$ fractional precision, which is comparable to the uncertainty in other prediction methods. This technique will be more precise in MINERvA's upcoming higher statistics run in the NuMI medium energy beam and could be valuable for planned neutrino oscillation experiments.
Book Synopsis Neutrino Flux Prediction for the Numi Beamline by : Leonidas Aliaga Soplin (Ph.D.)
Download or read book Neutrino Flux Prediction for the Numi Beamline written by Leonidas Aliaga Soplin (Ph.D.) and published by . This book was released on 2016 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of the neutrino flux in any conventional neutrino beam presents a challenge for the current and future short and long baseline neutrino experiments. The uncertainties associated with the production and attenuation of the hadrons in the beamline materials along with those associated with the beam optics have a big effect in the flux spectrum knowledge. For experiments like MINERvA, understanding the flux is crucial since it enters directly into every neutrino-nucleus cross-section measurements. The foundation of this work is predicting the neutrino flux at MINERvA using dedicated measurements of hadron production in hadron-nucleus collisions and incorporating in-situ MINERvA data that can provide additional constraints. This work also includes the prospect for predicting the flux at other detectors like the NOvA Near. The procedure and conclusions of this thesis will have a big impact on future hadron production experiments and on determining the flux for the upcoming DUNE experiment.
Book Synopsis Neutrino Oscillations Experiments Using Off-axis NuMI Beam by :
Download or read book Neutrino Oscillations Experiments Using Off-axis NuMI Beam written by and published by . This book was released on 2001 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: NuMI neutrino beam is constructed to aim at the MINOS detector in Soudan mine. Neutrinos emitted at angles $10-20 mrad$ with respect to the beam axis create an intense beam with a well defined energy, dependent on the angle. Additional surface detectors positioned at the transverse distance of several kilometers from the mine offer an opportunity for very precise mesurements of the neutrino oscillation parameters. The mixing matrix element $
Book Synopsis Neutrino-electron Scattering in Main Injector Experiment for Ν-A for Constraining the Neutrinos at the Main Injector Neutrino Flux by : Jaewon Park
Download or read book Neutrino-electron Scattering in Main Injector Experiment for Ν-A for Constraining the Neutrinos at the Main Injector Neutrino Flux written by Jaewon Park and published by . This book was released on 2013 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Neutrino-electron elastic scattering is used as a reference process to constrain the neutrino flux at the Main Injector (NuMI) beam observed by the MINERvA experiment. Prediction of the neutrino flux at accelerator experiments from other methods has a large uncertainty, and this uncertainty degrades measurements of neutrino oscillations and neutrino cross-sections. Neutrino-electron elastic scattering is a rare process, but its cross-section is precisely known. With a sample corresponding to 3.5 × 1020 protons on target in the NuMI low-energy neutrino beam, a sample of 120 ve+ --> ve− candidate events were observed with a predicted background of [approximately] 30 events. This results in a flux constraint with 13% fractional precision, which is comparable to the uncertainty in other prediction methods. This technique will be more precise in MINERvA's upcoming higher statistics run in the NuMI medium energy beam and could be valuable for planned neutrino oscillation experiments"--Page iii.
Book Synopsis Observation of Electron Neutrino Appearance in the NuMI Beam with the NOvA Experiment by :
Download or read book Observation of Electron Neutrino Appearance in the NuMI Beam with the NOvA Experiment written by and published by . This book was released on 2015 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOvA is a long-baseline neutrino oscillation experiment that uses two functionally identical detectors separated by 810 kilometers at locations 14 milliradians o -axis from the NuMI muon neutrino beam at Fermilab. At these locations the beam energy peaks at 2 GeV. This baseline is the longest in the world for an accelerator-based neutrino oscillation experiment, which enhances the sensitivity to the neutrino mass ordering. The experiment studies oscillations of the muon neutrino and anti-neutrino beam that is produced. Both detectors completed commissioning in the summer of 2014 and continue to collect data. One of the primary physics goals of the experiment is the measurement of electron neutrino appearance in the muon neutrino beam which yields measurements of the oscillation parameters sin22[theta]13, [delta], and the neutrino mass ordering within the standard model of neutrino oscillations. This thesis presents the analysis of data collected between February 2014 and May 2015, corresponding to 3.52 X 1020 protons-on-target. In this first analysis NOvA recorded 6 electron neutrino candidates which is a 3.3[sigma] observation of electron neutrino appearance. The T2K experiment performs the same measurement on a baseline of 295 kilometers and has a 1 [sigma] preference for the normal mass ordering over the inverted ordering over the phase space of the CP violating parameter [delta], which is also weakly seen in the NOvA result. By the summer of 2016 NOvA will triple its statistics due to increased beam power and a completed detector. If electron neutrinos continue to be observed at the current rate NOvA will be able to establish a mass ordering preference at a similar con dence level to T2K.
Book Synopsis Observation of Muon Neutrino Disappearance with the MINOS Detectors and the NuMI Neutrino Beam by :
Download or read book Observation of Muon Neutrino Disappearance with the MINOS Detectors and the NuMI Neutrino Beam written by and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current [nu]{sub {mu}} interactions are compared in two detectors located along the beam axis at distances of 1 km and 735 km. With 1.27 x 102° 120GeV protons incident on the NuMI target, 215 events with energies below 30GeV are observed at the Far Detector, compared to an expectation of 336 ± 14.4 events. The data are consistent with [nu]{sub {mu}} disappearance via oscillations with.
Book Synopsis Operation of the NuMI Beam Monitoring System by : Alberto Marchionni
Download or read book Operation of the NuMI Beam Monitoring System written by Alberto Marchionni and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NuMI (Neutrinos at the Main Injector) facility produces an intense neutrino beam for experiments. The NuMI Beam Monitoring system is four arrays of ion chambers that measure the intensity and distribution of the remnant hadron and tertiary muon beams produced in association with the neutrinos. The ion chambers operate in an environment of high particle fluxes and high radiation.
Book Synopsis Observation of Disappearance of Muon Neutrinos in the NuMI Beam by :
Download or read book Observation of Disappearance of Muon Neutrinos in the NuMI Beam written by and published by . This book was released on 2008 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Main Injector Neutrino Oscillation Search (MINOS) is a two detector long-baseline neutrino experiment designed to study the disappearance of muon neutrinos. MINOS will test the v[mu] → v[tau] oscillation hypothesis and measure precisely [Delta]m232 and sin22[theta]23 oscillation parameters. The source of neutrinos for MINOS experiment is Fermilab's Neutrinos at the Main Injector (NuMI) beamline. The energy spectrum and the composition of the beam is measured at two locations, one close to the source and the other 735 km down-stream in the Soudan Mine Underground Laboratory in northern Minnesota. The precision measurement of the oscillation parameters requires an accurate prediction of the neutrino flux at the Far Detector. This thesis discusses the calculation of the neutrino flux at the Far Detector and its uncertainties. A technique that uses the Near Detector data to constrain the uncertainties in the calculation of the flux is described. The data corresponding to an exposure of 2.5 x 1020 protons on the NuMI target is presented and an energy dependent disappearance pattern predicted by neutrino oscillation hypotheses is observed in the Far Detector data. The fit to MINOS data, for given exposure, yields the best fit values for [Delta]m$2\atop{23}$ and sin2 2[theta]23 to be (2.38$+0.20\atop{-0.16}$) x 10-3 eV2/c4and 1.00-0.08, respectively.
Book Synopsis Neutrino Flux Prediction for the NuMI Beamline by :
Download or read book Neutrino Flux Prediction for the NuMI Beamline written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of the neutrino flux in any conventional neutrino beam presents a challenge for the current and future short and long baseline neutrino experiments. The uncertainties associated with the production and attenuation of the hadrons in the beamline materials along with those associated with the beam optics have a big effect in the flux spectrum knowledge. For experiments like MINERvA, understanding the flux is crucial since it enters directly into every neutrino-nucleus cross-sections measurements. The foundation of this work is predicting the neutrino flux at MINERvA using dedicated measurements of hadron production in hadron-nucleus collisions and incorporating in-situ MINERvA data that can provide additional constraints. This work also includes the prospect for predicting the flux at other detectors like the NOvA Near detector. The procedure and conclusions of this thesis will have a big impact on future hadron production experiments and on determining the flux for the upcoming DUNE experiment.
Book Synopsis Beam-Based Alignment of the NuMI Target Station Components at FNAL. by :
Download or read book Beam-Based Alignment of the NuMI Target Station Components at FNAL. written by and published by . This book was released on 2006 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Neutrinos at the Main Injector (NuMI) facility is a conventional horn-focused neutrino beam which produces muon neutrinos from a beam of mesons directed into a long evacuated decay volume. The relative alignment of the primary proton beam, target, and focusing horns affects the neutrino energy spectrum delivered to experiments. This paper describes a check of the alignment of these components using the proton beam.
Book Synopsis A Study of Muon Neutrino Disappearance with the MINOS Detectors and the NuMI Neutrino Beam by :
Download or read book A Study of Muon Neutrino Disappearance with the MINOS Detectors and the NuMI Neutrino Beam written by and published by . This book was released on 2008 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results of an analysis of v[mu] disappearance with the MINOS experiment, which studies the neutrino beam produced by the NuMI facility at Fermi National Accelerator Laboratory. The rates and energy spectra of charged current v[mu] interactions are measured in two similar detectors, located at distances of 1 km and 735 km along the NuMI beamline. The Near Detector provides accurate measurements of the initial beam composition and energy, while the Far Detector is sensitive to the effects of neutrino oscillations. The analysis uses data collected between May 2005 and March 2007, corresponding to an exposure of 2.5 x 1020 protons on target. As part of the analysis, sophisticated software was developed to identify muon tracks in the detectors and to reconstruct muon kinematics. Events with reconstructed tracks were then analyzed using a multivariate technique to efficiently isolate a pure sample of charged current v[mu] events. An extrapolation method was also developed, which produces accurate predictions of the Far Detector neutrino energy spectrum, based on data collected at the Near Detector. Finally, several techniques to improve the sensitivity of an oscillation measurement were implemented, and a full study of the systematic uncertainties was performed. Extrapolating from observations at the Near Detector, 733 ± 29 Far Detector events were expected in the absence of oscillations, but only 563 events were observed. This deficit in event rate corresponds to a significance of 4.3 standard deviations. The deficit is energy dependent and clear distortion of the Far Detector energy spectrum is observed. A maximum likelihood analysis, which fully accounts for systematic uncertainties, is used to determine the allowed regions for the oscillation parameters and identifies the best fit values as [Delta]m$2\atop{32}$ = 2.29$+0.14\atop{-0.14}$ x 10-3 eV2 and sin2 2[theta]23> 0.953 (68% confidence level). The models of neutrino decoherence and decay are disfavored at the 5.0[sigma] and 3.2[sigma] levels respectively, while the no oscillation model is excluded at the 9.4[sigma] level.
