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Letter On Intent To Build An Off Axis Detector To Study Nusub Mu2nusub E Oscillations With The Numi Neutrino Beam Version 60
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Book Synopsis Letter of Intent to Build an Off-axis Detector to Study Nu[mu] ---] Nu(e) Oscillations with the NuMI Neutrino Beam by :
Download or read book Letter of Intent to Build an Off-axis Detector to Study Nu[mu] ---] Nu(e) Oscillations with the NuMI Neutrino Beam written by and published by . This book was released on 2002 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Letter on Intent to Build an Off-axis Detector to Study?{sub Mu}→?{sub E} Oscillations with the NuMI Neutrino Beam. Version 6.0 by :
Download or read book Letter on Intent to Build an Off-axis Detector to Study?{sub Mu}→?{sub E} Oscillations with the NuMI Neutrino Beam. Version 6.0 written by and published by . This book was released on 2003 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of neutrino masses is of fundamental importance. Neutrino oscillations seem to be the only tool available to us to unravel the pattern of neutrino masses and, perhaps, shed some light on the origin of masses in general. The NuMI neutrino beam line and the MINOS experiment represent a major investment of US High Energy Physics in the area of neutrino physics. the forthcoming results could decisively establish neutrino oscillations as the underlying physics mechanism for the atmospheric?{sub {mu}} deficit and provide a precise measurement of the corresponding oscillation parameters,?m322 and sin2 2?23. This, however, is just a beginning of a long journey into uncharted territories. The key to these new territories is the detection of?{sub {mu}} →?{sub e} oscillations associated with the atmospheric?{sub {mu}} deficit, controlled by the little known mixing angle sin22?13. A precise measurement of the amplitude of these oscillations will enable a determination of the pattern of the mass hierarchy of neutrinos. If the solar neutrino experiments determine that the value?m122 is in the range of 10−5-10−4 eV2 then the measurement of the CP violation in the neutrino sector may well be within our reach. The full potential of the NuMI neutrino beam can be exploited by complementing the MINOS detector, under construction, with a new detector(s) placed at some off-axis position and collecting data in parallel with MINOS. The first phase of the proposed program includes a new detector, optimized for?{sub e} detection, with a fiducial mass of the order os 20 kton and exposed to neutrino and antineutrino beams. In a five year run its sensitivity to the?{sub {mu}} →?{sub e} oscillations will be at least a factor of ten beyond the current limit. The future direction of the program will depend on the results of this first phase, but it is very likely that it will be combination of a significant increase of the neutrino beam intensity via an upgraded proton source and an increase of the detector mass by a factor of five or so. Depending on the circumstances, the goals of Phase II may be a further increase of the sensitivity of a search for?{sub {mu}} →?{sub e} oscillations, or, perhaps, a measurement of the CP violating phase? in the lepton sector.
Book Synopsis Letter on Intent to Build an Off-axis Detector to Study[nu][sub Mu][yields][nu][sub E] Oscillations with the NuMI Neutrino Beam. Version 6.0 by :
Download or read book Letter on Intent to Build an Off-axis Detector to Study[nu][sub Mu][yields][nu][sub E] Oscillations with the NuMI Neutrino Beam. Version 6.0 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of neutrino masses is of fundamental importance. Neutrino oscillations seem to be the only tool available to us to unravel the pattern of neutrino masses and, perhaps, shed some light on the origin of masses in general. The NuMI neutrino beam line and the MINOS experiment represent a major investment of US High Energy Physics in the area of neutrino physics. the forthcoming results could decisively establish neutrino oscillations as the underlying physics mechanism for the atmospheric[nu][sub[mu]] deficit and provide a precise measurement of the corresponding oscillation parameters, [Delta]m[sub 32][sup 2] and sin[sup 2] 2[theta][sub 23]. This, however, is just a beginning of a long journey into uncharted territories. The key to these new territories is the detection of[nu][sub[mu]][yields][nu][sub e] oscillations associated with the atmospheric[nu][sub[mu]] deficit, controlled by the little known mixing angle sin[sup 2]2[theta][sub 13]. A precise measurement of the amplitude of these oscillations will enable a determination of the pattern of the mass hierarchy of neutrinos. If the solar neutrino experiments determine that the value[Delta]m[sub 12][sup 2] is in the range of 10[sup -5]-10[sup -4] eV[sup 2] then the measurement of the CP violation in the neutrino sector may well be within our reach. The full potential of the NuMI neutrino beam can be exploited by complementing the MINOS detector, under construction, with a new detector(s) placed at some off-axis position and collecting data in parallel with MINOS. The first phase of the proposed program includes a new detector, optimized for[nu][sub e] detection, with a fiducial mass of the order os 20 kton and exposed to neutrino and antineutrino beams. In a five year run its sensitivity to the[nu][sub[mu]][yields][nu][sub e] oscillations will be at least a factor of ten beyond the current limit. The future direction of the program will depend on the results of this first phase, but it is very likely that it will be combination of a significant increase of the neutrino beam intensity via an upgraded proton source and an increase of the detector mass by a factor of five or so. Depending on the circumstances, the goals of Phase II may be a further increase of the sensitivity of a search for[nu][sub[mu]][yields][nu][sub e] oscillations, or, perhaps, a measurement of the CP violating phase[delta] in the lepton sector.
Book Synopsis Letter on Intent to Build an Off-axis Detector to Study [nu]{sub Mu}2!nu]{sub E} Oscillations with the NuMI Neutrino Beam. Version 6.0 by :
Download or read book Letter on Intent to Build an Off-axis Detector to Study [nu]{sub Mu}2!nu]{sub E} Oscillations with the NuMI Neutrino Beam. Version 6.0 written by and published by . This book was released on 2003 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of neutrino masses is of fundamental importance. Neutrino oscillations seem to be the only tool available to us to unravel the pattern of neutrino masses and, perhaps, shed some light on the origin of masses in general. The NuMI neutrino beam line and the MINOS experiment represent a major investment of US High Energy Physics in the area of neutrino physics. the forthcoming results could decisively establish neutrino oscillations as the underlying physics mechanism for the atmospheric [nu]{sub {mu}} deficit and provide a precise measurement of the corresponding oscillation parameters, [Delta]m322 and sin2 2[theta]23. This, however, is just a beginning of a long journey into uncharted territories. The key to these new territories is the detection of [nu]{sub {mu}} → [nu]{sub e} oscillations associated with the atmospheric [nu]{sub {mu}} deficit, controlled by the little known mixing angle sin22[theta]13. A precise measurement of the amplitude of these oscillations will enable a determination of the pattern of the mass hierarchy of neutrinos. If the solar neutrino experiments determine that the value [Delta]m122 is in the range of 10−5-10−4 eV2 then the measurement of the CP violation in the neutrino sector may well be within our reach. The full potential of the NuMI neutrino beam can be exploited by complementing the MINOS detector, under construction, with a new detector(s) placed at some off-axis position and collecting data in parallel with MINOS. The first phase of the proposed program includes a new detector, optimized for [nu]{sub e} detection, with a fiducial mass of the order os 20 kton and exposed to neutrino and antineutrino beams. In a five year run its sensitivity to the [nu]{sub {mu}} → [nu]{sub e} oscillations will be at least a factor of ten beyond the current limit. The future direction of the program will depend on the results of this first phase, but it is very likely that it will be combination of a significant increase of the neutrino beam intensity via an upgraded proton source and an increase of the detector mass by a factor of five or so. Depending on the circumstances, the goals of Phase II may be a further increase of the sensitivity of a search for [nu]{sub {mu}} → [nu]{sub e} oscillations, or, perhaps, a measurement of the CP violating phase [delta] in the lepton sector.
Book Synopsis A Large Liquid Argon Time Projection Chamber for Long-baseline, Off-axis Neutrino Oscillation Physics with the NuMI Beam by : B. T. Fleming
Download or read book A Large Liquid Argon Time Projection Chamber for Long-baseline, Off-axis Neutrino Oscillation Physics with the NuMI Beam written by B. T. Fleming and published by . This book was released on 2005 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from neutrino oscillation experiments in the last ten years have revolutionized the field of neutrino physics. While the overall oscillation picture for three neutrinos is now well established and precision measurements of the oscillation parameters are underway, crucial issues remain. In particular, the hierarchy of the neutrino masses, the structure of the neutrino mixing matrix, and, above all, CP violation in the neutrino sector are the primary experimental challenges in upcoming years. A program that utilizes the newly commissioned NuMI neutrino beamline, and its planned upgrades, together with a high-performance, large-mass detector will be in an excellent position to provide decisive answers to these key neutrino physics questions. A Liquid Argon time projection chamber (LArTPC) [2], which combines fine-grained tracking, total absorption calorimetry, and scalability, is well matched for this physics program. The few-millimeter-scale spatial granularity of a LArTPC combined with dE/dx measurements make it a powerful detector for neutrino oscillation physics. Scans of simulated event samples, both directed and blind, have shown that electron identification in {nu}{sub e} charged current interactions can be maintained at an efficiency of 80%. Backgrounds for {nu}{sub e} appearance searches from neutral current events with a {pi}{sup 0} are reduced well below the {approx} 0.5-1.0% {nu}{sub e} contamination of the {nu}{sub {mu}} beam [3]. While the ICARUS collaboration has pioneered this technology and shown its feasibility with successful operation of the T600 (600-ton) LArTPC [4], a detector for off-axis, long-baseline neutrino physics must be many times more massive to compensate for the low event rates. We have a baseline concept [5] based on the ICARUS wire plane structure and commercial methods of argon purification and housed in an industrial liquefied-natural-gas tank. Fifteen to fifty kton liquid argon capacity tanks have been considered. A very preliminary cost estimate for a 50-kton detector is $100M (unloaded) [6]. Continuing R & D will emphasize those issues pertaining to implementation of this very large scale liquid argon detector concept. Key hardware issues are achievement and maintenance of argon purity in the environment of an industrial tank, the assembly of very large electrode planes, and the signal quality obtained from readout electrodes with very long wires. Key data processing issues include an initial focus on rejection of cosmic rays for a surface experiment. Efforts are underway at Fermilab and a small number of universities in the US and Canada to address these issues with the goal of embarking on the construction of industrial-scale prototypes within one year. One such prototype could be deployed in the MiniBooNE beamline or in the NuMI surface building where neutrino interactions could be observed. These efforts are complementary to efforts around the world that include US participation, such as the construction of a LArTPC for the 2-km detector location at T2K [7]. The 2005 APS neutrino study [1] recommendations recognize that ''The development of new technologies will be essential for further advances in neutrino physics''. In a recent talk to EPP2010, Fermilab director P. Oddone, discussing the Fermilab program, states on his slides: ''We want to start a long term R & D program towards massive totally active liquid Argon detectors for extensions of NOvA''. [8]. As such, we are poised to enlarge our R & D efforts to realize the promise of a large liquid argon detector for neutrino physics.
Book Synopsis Detector R & D for Future Neutrino Experiments with the NuMI Beamline by :
Download or read book Detector R & D for Future Neutrino Experiments with the NuMI Beamline written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is the result of a request from the Fermilab directorate to (i) investigate the detector technology issues relevant for future long baseline experiments and (ii) consider the associated detector R and D that would be needed to prepare the way for future neutrino oscillation experiments using the NuMI beamline. Because of the narrow energy spread provided by an off-axis beam and the resulting low intrinsic electron neutrino background, as well as the very favorable duty cycle of the NuMI beamline, a well-placed neutrino detector at the surface of the earth could take the next important steps in neutrino oscillation physics. The biggest outstanding issue in this field is whether or not the last unmeasured element of the leptonic mixing matrix, parameterized by the mixing angle[theta][sub 13], is nonzero. If it is in fact non-zero, this opens the door to measurements of the neutrino mass hierarchy and, if the solar neutrino oscillations are described by the LMA solution, searches for CP violation in the lepton sector. In order to get to any of these measurements, an off-axis detector must be capable of measuring the[nu][sub[mu]]([bar[nu]][sub[mu]])[yields][nu][sub e]([bar[nu]][sub e]) transition probabilities as well as the[nu][sub[mu]]([bar[nu]][sub[mu]]) survival probabilities, at the energies present in these off-axis beams, which could lie anywhere from 0.6 to 3 GeV. Optimal baselines and energies will depend on the physics goal of the experiment. For example, an optimization of the sensitivity for[nu][sub e] appearance from a[nu][sub[mu]] beam assuming[Delta]m[sub 32][sup 2]= 3 x 10[sup -3] eV[sup 2] would lead to a baseline of[approx] 700-900 km and an energy of[approx] 2.2 GeV.
Book Synopsis NuSTORM - Neutrinos from STORed Muons by :
Download or read book NuSTORM - Neutrinos from STORed Muons written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Letter of Intent to Build a MiniBooNE Near Detector by :
Download or read book Letter of Intent to Build a MiniBooNE Near Detector written by and published by . This book was released on 2009 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is accumulating evidence for a difference between neutrino and antineutrino oscillations at the H" eV2 scale. The MiniBooNE experiment observes an unexplained excess of electron-like events at low energies in neutrino mode, which may be due, for example, to either a neutral current radiative interaction, sterile neutrino decay, or to neutrino oscillations involving sterile neutrinos and which may be related to the LSND signal. No excess of electron-like events ( -0.5 ± 7.8 ± 8.7), however, is observed so far at low energies in antineutrino mode. Furthermore, global 3+1 and 3+2 sterile neutrino fits to the world neutrino and antineutrino data suggest a difference between neutrinos and antineutrinos with significant (sin2 2[theta]{sub [mu]{mu}} H"35%) {bar [nu]}{sub {mu}} disappearance. In order to test whether the low-energy excess is due to neutrino oscillations and whether there is a difference between [nu]{sub {mu}} and {bar [nu]}{sub {mu}} disappearance, we propose building a second MiniBooNE detector at (or moving the existing MiniBooNE detector to) a distance of H"00 m from the Booster Neutrino Beam (BNB) production target. With identical detectors at different distances, most of the systematic errors will cancel when taking a ratio of events in the two detectors, as the neutrino flux varies as 1/r2 to a calculable approximation. This will allow sensitive tests of oscillations for both {nu}{sub e} and {bar {nu}} appearance and {nu}{sub {mu}} and {bar {nu}}{sub {mu}} disappearance. Furthermore, a comparison between oscillations in neutrino mode and antineutrino mode will allow a sensitive search for CP and CPT violation in the lepton sector at short baseline ([Delta]m2> 0.1 eV2). Finally, by comparing the rates for a neutral current (NC) reaction, such as NC [pi]° scattering or NC elastic scattering, a direct search for sterile neutrinos will be made. The initial amount of running time requested for the near detector will be a total of H"E20 POT divided between neutrino mode and antineutrino mode, which will provide statistics comparable to what has already been collected in the far detector. A thorough understanding of this short-baseline physics will be of great importance to future long-baseline oscillation experiments.
Book Synopsis First Measurement of Nu[mu] and Nu(e) Events in an Off-Axis Horn-Focused Neutrino Beam by :
Download or read book First Measurement of Nu[mu] and Nu(e) Events in an Off-Axis Horn-Focused Neutrino Beam written by and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle 6.3 degrees with respect to the NuMI beam axis. Samples of charged current quasi-elastic [nu]{sub {mu}} and [nu]{sub e} interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates the modeling of the NuMI off-axis beam.
Book Synopsis DAQ Software Contributions, Absolute Scale Energy Calibration and Background Evaluation for the NOvA Experiment at Fermilab by :
Download or read book DAQ Software Contributions, Absolute Scale Energy Calibration and Background Evaluation for the NOvA Experiment at Fermilab written by and published by . This book was released on 2015 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOvA (NuMI Off-axis ve [nu_e] Appearance) Experiment is a long-baseline accelerator neutrino experiment currently in its second year of operations. NOvA uses the Neutrinos from the Main Injector (NuMI) beam at Fermilab, and there are two main off-axis detectors: a Near Detector at Fermilab and a Far Detector 810 km away at Ash River, MN. The work reported herein is in support of the NOvA Experiment, through contributions to the development of data acquisition software, providing an accurate, absolute-scale energy calibration for electromagnetic showers in NOvA detector elements, crucial to the primary electron neutrino search, and through an initial evaluation of the cosmic background rate in the NOvA Far Detector, which is situated on the surface without significant overburden. Additional support work for the NOvA Experiment is also detailed, including DAQ Server Administration duties and a study of NOvA's sensitivity to neutrino oscillations into a "sterile" state.
Book Synopsis A Search for Sterile Neutrinos at the NO$\nu$A Far Detector by :
Download or read book A Search for Sterile Neutrinos at the NO$\nu$A Far Detector written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NO$\nu$A is the current United States flagship long-baseline neutrino experiment designed to study the properties of neutrino oscillations. It consists of two functionally identical detectors each located $14.6$ mrad off the central axis from the Fermilab NuMI neutrino beam. The Near Detector is located $1\, \mbox{km}$ downstream from the beam source, and the Far Detector is located $810\, \mbox{km}$ away in Ash River, Minnesota. This long baseline, combined with the ability of the NuMI facility to switch between nearly pure neutrino and anti-neutrino beams, allows NO$\nu$A to make precision measurements of neutrino mixing angles, potentially determine the neutrino mass hierarchy, and begin searching for CP violating effects in the lepton sector. However, NO$\nu$A can also probe more exotic scenarios, such as oscillations between the known active neutrinos and new sterile species. This thesis showcases the first search for sterile neutrinos in a $3 + 1$ model at NO$\nu$A. The a nalysis presented searches for a deficit in the rate of neutral current events at the Far Detector using the Near Detector to constrain the predicted spectrum. The comparison between the observed and predicted spectra is translated into a measurement of the expanded PMNS mixing angles, $\theta_{34}$ and $\theta_{24}$ elements, and the matrix elements $\vert U_{\mu 4} \vert^2$ and $\vert U_{\tau 4} \vert^2$, assuming $0.05
Book Synopsis First Measurement of VuT & Ve Events in an Off-axis Horn-focused Neutrino Beam by :
Download or read book First Measurement of VuT & Ve Events in an Off-axis Horn-focused Neutrino Beam written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m distance from the NuMI production target, at 110 mrad angle (6.3{sup o}) with respect to the NuMI beam axis. Samples of charged current quasi-elastic [nu]{sub {mu}} and [nu]{sub e} interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates modeling of the NuMI off-axis beam.
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