Accelerator Design for 1.3 MW Beam Power Operation of the J-PARC Main Ring

Abstract The J-PARC Main Ring (MR) has supplied the high-intensity proton beam for the T2K long-baseline neutrino experiment since 2010. The present beam power is 510 kW and the total number of protons on the target reaches 3.64 × 1021. To observe CP violation in the lepton sector with high accuracy, more protons need to be delivered to the T2K target. The project to upgrade the beam power to 1.3 MW started as a mid-term plan of the MR. In parallel to preparing a full technical design report, the technical designs of hardware upgrades using new technologies and all accelerator components that are necessary to deliver the 1.3-MW beam power are summarized and consolidated in this short paper. Further, this paper includes beam dynamics studies and simulation results for handling 3.3 × 1014 protons per pulse (ppp) without significant beam loss in the ring and transport lines. The Hyper-Kamiokande (HK) project has recently been approved, and construction has started; the MR upgrade and HK project will work together efficiently to study the CP violation.

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Latest Results from the T2K Neutrino Experiment

Universe ◽

10.3390/universe5010021 ◽

2019 ◽

Vol 5 (1) ◽

pp. 21

Author(s):

Dean Karlen ◽

on behalf of the TtwoK Collaboration

Keyword(s):

Cp Violation ◽

Neutrino Oscillation ◽

Neutrino Mass ◽

Electron Neutrino ◽

Muon Neutrino ◽

Neutrino Experiment ◽

Long Baseline ◽

Neutrino Oscillation Experiment ◽

Electron Neutrino Appearance ◽

Oscillation Experiment

The T2K long baseline neutrino oscillation experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and anti-neutrino beams. This presentation reports on the analysis of our data from an exposure of 2 . 6 × 10 21 protons on target. Results for oscillation parameters, including the CP violation parameter and neutrino mass ordering, are shown.

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The mass-hierarchy and CP-violation discovery reach of the LBNO long-baseline neutrino experiment

Journal of High Energy Physics ◽

10.1007/jhep05(2014)094 ◽

2014 ◽

Vol 2014 (5) ◽

Cited By ~ 37

Author(s):

S.K. Agarwalla ◽

◽

L. Agostino ◽

M. Aittola ◽

A. Alekou ◽

...

Keyword(s):

Cp Violation ◽

Neutrino Experiment ◽

Mass Hierarchy ◽

Long Baseline

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Optimal configurations of the Deep Underground Neutrino Experiment

International Journal of Modern Physics A ◽

10.1142/s0217751x16500202 ◽

2016 ◽

Vol 31 (07) ◽

pp. 1650020 ◽

Cited By ~ 12

Author(s):

Vernon Barger ◽

Atri Bhattacharya ◽

Animesh Chatterjee ◽

Raj Gandhi ◽

Danny Marfatia ◽

...

Keyword(s):

Beam Power ◽

Neutrino Experiment ◽

Mass Hierarchy ◽

Atmospheric Neutrinos ◽

Near Detector ◽

Neutrino Sector ◽

Long Baseline ◽

Systematic Uncertainties ◽

Deep Underground ◽

Using Data

We perform a comprehensive study of the ability of the Deep Underground Neutrino Experiment (DUNE) to answer outstanding questions in the neutrino sector. We consider the sensitivities to the mass hierarchy, the octant of [Formula: see text] and to CP violation using data from beam and atmospheric neutrinos. We evaluate the dependencies on the precision with which [Formula: see text] will be measured by reactor experiments, on the detector size, beam power and exposure time, on detector magnetization, and on the systematic uncertainties achievable with and without a near detector. We find that a 35 kt far detector in DUNE with a near detector will resolve the eightfold degeneracy that is intrinsic to long baseline experiments and will meet the primary goals of oscillation physics that it is designed for.

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Probing CP violation at LBNE with reactor experiments

Modern Physics Letters A ◽

10.1142/s0217732315500170 ◽

2015 ◽

Vol 30 (07) ◽

pp. 1550017 ◽

Cited By ~ 8

Author(s):

Debajyoti Dutta ◽

Kalpana Bora

Keyword(s):

Cp Violation ◽

Precise Measurement ◽

Neutrino Experiment ◽

Mass Hierarchy ◽

Mixing Angle ◽

The Third ◽

Long Baseline ◽

Discovery Potential ◽

Text Mode ◽

The Impact

In this work, we have explored the possibilities of improving CP violation (CPV) discovery potential of newly planned Long-Baseline Neutrino Experiment (LBNE), USA, by combining with data from reactors. The third mixing angle θ13 is now very precisely measured and this precise measurement of θ13 helps in the measurement of CPV. Here, CPV is studied with and without data from reactors. The impact of placing a neutrino data (ND) is also studied. It is found that CPV discovery potential of LBNE with ND increases when combined with data from reactors. With a far detector of 35 kt, it is possible to obtain 5σ sensitivity of CPV when run for 5 years in ν and 5 years in [Formula: see text] mode. When normal hierarchy is assumed, CPV sensitivity is maximum. CPV discovery is possible by combining 5 years neutrino data from LBNE with 3 years anti-neutrino data from reactors. This study reveals that CPV can also be discovered at 5σ cl in inverted mass hierarchy (IH) mode when appearance measurement of LBNE is combined with reactors.

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Neutrino Mass Hierarchy and CP Violation in Long Baseline Neutrino Experiment

International Journal of Theoretical Physics ◽

10.1007/s10773-013-1860-4 ◽

2013 ◽

Vol 53 (3) ◽

pp. 727-733

Author(s):

Bipin Singh Koranga

Keyword(s):

Cp Violation ◽

Neutrino Mass ◽

Neutrino Experiment ◽

Mass Hierarchy ◽

Neutrino Mass Hierarchy ◽

Long Baseline

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NEUTRINO MASSES, OSCILLATIONS, AND TESTS WITH FUTURE SUPERBEAMS AND A NEUTRINO FACTORY

International Journal of Modern Physics A ◽

10.1142/s0217751x03017269 ◽

2003 ◽

Vol 18 (22) ◽

pp. 3921-3933 ◽

Cited By ~ 4

Author(s):

M. LINDNER

Keyword(s):

Cp Violation ◽

Neutrino Oscillation ◽

Neutrino Masses ◽

Neutrino Factory ◽

Mixing Angles ◽

Long Baseline

Future long baseline neutrino oscillation (LBL) setups are discussed and the remarkable potential for very precise measurements of mass splittings, mixing angles, MSW effects, the sign of Δm2 and leptonic CP violation is shown. Furthermore we discuss the sensitivity improvements which can be obatined by combining the planned JHF-Superkamiokande and the proposed NuMI off-axis experiment.

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Commissioning of a High Pressure Time Projection Chamber with Optical Readout

Instruments ◽

10.3390/instruments5020022 ◽

2021 ◽

Vol 5 (2) ◽

pp. 22

Author(s):

Alexander Deisting ◽

Abigail Waldron ◽

Edward Atkin ◽

Gary Barker ◽

Anastasia Basharina-Freshville ◽

...

Keyword(s):

High Pressure ◽

Neutrino Oscillation ◽

Time Projection Chamber ◽

Neutrino Experiment ◽

Long Baseline ◽

Neutrino Oscillation Experiment ◽

Optical Readout ◽

Systematic Uncertainties ◽

Pressure Time ◽

Time Projection

The measurements of proton–nucleus scattering and high resolution neutrino–nucleus interaction imaging are key in reducing neutrino oscillation systematic uncertainties in future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed and operated at the Royal Holloway University of London and CERN as a first step in the development of a HPTPC that is capable of performing these measurements as part of a future long-baseline neutrino oscillation experiment, such as the Deep Underground Neutrino Experiment. In this paper, we describe the design and operation of the prototype HPTPC with an argon based gas mixture. We report on the successful hybrid charge and optical readout using four CCD cameras of signals from 241Am sources.

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The Deep Underground Neutrino Experiment

Advances in High Energy Physics ◽

10.1155/2015/256351 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9 ◽

Cited By ~ 4

Author(s):

Maury Goodman

Keyword(s):

Neutrino Oscillation ◽

High Precision ◽

Liquid Argon ◽

Neutrino Experiment ◽

Research Facility ◽

Long Baseline ◽

The Status ◽

Deep Underground ◽

Fermi National Accelerator Laboratory ◽

Sanford Underground Research Facility

The Deep Underground Neutrino Experiment (DUNE) is a worldwide effort to construct a next-generation long-baseline neutrino experiment based at the Fermi National Accelerator Laboratory. It is a merger of previous efforts and other interested parties to build, operate, and exploit a staged 40 kt liquid argon detector at the Sanford Underground Research Facility 1300 km from Fermilab, and a high precision near detector, exposed to a 1.2 MW, tunableνbeam produced by the PIP-II upgrade by 2024, evolving to a power of 2.3 MW by 2030. The neutrino oscillation physics goals and the status of the collaboration and project are summarized in this paper.

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