T2K: A LONG-BASELINE EXPERIMENT TO STUDY NEUTRINOS

2012 ◽  
Vol 27 (17) ◽  
pp. 1230017
Author(s):  
ALFONS WEBER
Keyword(s):  
Neutrino Oscillation ◽  
Beam Line ◽  
Neutrino Beam ◽  
Experimental Setup ◽  
Accelerator Complex ◽  
The West ◽  
Long Baseline ◽  
Future Potential ◽  
New Generation ◽  
Baseline Experiment

T2K is the first of a new generation of long baseline neutrino oscillation experiments that will measure neutrino oscillations parameters. The experiment uses the J-PARC accelerator complex on the east cost of Japan to sent a neutrino beam to the Kamioka mine, located 295 km to the west. It consists of a dedicated beam-line, a near detector complex to characterize the beam and the well-known Super-Kamiokande detector to measure the oscillation signal. This paper describes the experimental setup, the results of the first measurement campaign as well as giving an outlook on the future potential of the experiment.

RECENT RESULTS FROM K2K

2002 ◽  
Vol 17 (24) ◽  
pp. 3364-3377 ◽  
Author(s):  
◽  
C. K. JUNG
Keyword(s):  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
Neutrino Beam ◽  
Statistical Fluctuation ◽  
Atmospheric Neutrinos ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Oscillation Analysis ◽  
The Us ◽  
Oscillation Experiment

K2K is a long baseline neutrino oscillation experiment using a neutrino beam produced at the KEK 12 GeV PS, a near detector complex at KEK and a far detector (Super-Kamiokande) in Kamioka, Japan. The experiment was constructed and is being operated by an international consortium of institutions from Japan, Korea, and the US. The experiment started taking data in 1999 and has successfully taken data for about two years. K2K is the first long beseline neutrino oscillation experiment with a baseline of order hundreds of km and is the first accelerator based neutrino oscillation experiment that is sensitive to the Super-Kamiokande allowed region obtained from the atmospheric neutrino oscillation analysis. A total of 44 events have been observed in the far detector during the period of June 1999 to April 2001 corresponding to 3.85 × 1019 protons on target. The observation is consistent with the neutrino oscillation expectations based on the oscillation parameters derived from the atmospheric neutrinos, and the probability that this is a statistical fluctuation of non-oscillation expectation of [Formula: see text] is less than 3%.

scholarly journals MONOENERGETIC NEUTRINO BEAM FOR LONG BASELINE EXPERIMENTS

2007 ◽  
Vol 16 (05) ◽  
pp. 1331-1347
Author(s):  
JOE SATO
Keyword(s):  
Electron Capture ◽  
Neutrino Beam ◽  
Capture Process ◽  
Long Baseline ◽  
Baseline Experiment

In an electron capture process by a nucleus, emitted neutrinos are monoenergetic. We study a long baseline experiment with such a completely monoenergetic neutrino beam. This talk is based on Refs. 1 and 2.

scholarly journals SIMULATION OF A WIDE-BAND LOW-ENERGY NEUTRINO BEAM FOR VERY LONG BASELINE NEUTRINO OSCILLATION EXPERIMENTS.

2006 ◽  
Author(s):  
M. BISHAI ◽  
J. HEIM ◽  
C. LEWIS ◽  
A.D. MARINO ◽  
B. VIREN ◽  
...  
Keyword(s):  
Neutrino Oscillation ◽  
Wide Band ◽  
Low Energy ◽  
Neutrino Beam ◽  
Long Baseline ◽  
Energy Neutrino

scholarly journals WA105: A Large LAr Double Phase TPC Prototype

2018 ◽  
Vol 174 ◽  
pp. 01009
Author(s):  
Thorsten Lux
Keyword(s):  
Neutrino Oscillation ◽  
Liquid Argon ◽  
Intermediate Step ◽  
Technical Feasibility ◽  
Long Baseline ◽  
Time Projection Chambers ◽  
Double Phase ◽  
Time Projection ◽  
Detection Medium ◽  
Baseline Experiment

For the next generation of long baseline neutrino oscillation experiments detectors with several tens of ktons of detection medium will be needed. Liquid argon (LAr) is ideal for this application since it allows the construction of fully sensitive time projection chambers (TPCs). A mandatory step between the current setups and the final detector for the long baseline experiment is the construction of a large prototype to prove the technical feasibility of the scaling. WA105 with a size of 6×6×6 m3 is this intermediate step for the detector concept of a LAr double phase TPC and will be presented in these proceedings.

scholarly journals Latest results of the OPERA experiment on nu-tau appearance in the CNGS neutrino beam

2019 ◽  
Author(s):  
N. Agafonova ◽  
A. Alexandrov ◽  
A. Anokhina ◽  
S. Aoki ◽  
A. Ariga ◽  
...  
Keyword(s):  
Neutrino Beam ◽  
Statistical Uncertainty ◽  
Multivariate Approach ◽  
Long Baseline ◽  
Baseline Experiment

OPERA is a long-baseline experiment designed to search for \nu_{\mu}\to\nu_{\tau}νμ→ντ oscillations in appearance mode. It was based at the INFN Gran Sasso laboratory (LNGS) and took data from 2008 to 2012 with the CNGS neutrino beam from CERN. After the discovery of \nu_\tauντ appearance in 2015, with 5.1\sigma5.1σ significance, the criteria to select \nu_\tauντ candidates have been extended and a multivariate approach has been used for events identification. In this way the statistical uncertainty in the measurement of the oscillation parameters and of \nu_\tauντ properties has been improved. Results are reported.

scholarly journals Results on Neutrino and Antineutrino Oscillations from the NOvA Experiment

2019 ◽  
Vol 64 (7) ◽  
pp. 613
Author(s):  
T. Nosek
Keyword(s):  
Neutrino Oscillation ◽  
Neutrino Mass ◽  
Muon Neutrino ◽  
Neutrino Beam ◽  
Mass Hierarchy ◽  
Neutrino Mass Hierarchy ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Beam Mode ◽  
Oscillation Experiment

NOvA is a two-detector long-baseline neutrino oscillation experiment using Fermilab’s 700 kW NuMI muon neutrino beam. With a total exposure of 8.85×1020 +12.33×1020 protons on target delivered to NuMI in the neutrino + antineutrino beam mode (78% more antineutrino data than in 2018), the experiment has made a 4.4q-significant observation of the ve appearance in a vм beam, measured oscillation parameters |Δm232|, sin2O23, and excluded most values near бCP = п/2 for the inverted neutrino mass hierarchy by more than 3q.

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