J-PARC neutrino beamline
E561153
The J-PARC neutrino beamline is a high-intensity neutrino production facility in Japan that generates and directs neutrino beams for long-baseline experiments such as T2K.
All labels observed (3)
| Label | Occurrences |
|---|---|
| J-PARC | 1 |
| J-PARC neutrino beamline canonical | 1 |
| T2K neutrino beamline | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6010093 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: J-PARC neutrino beamline Context triple: [T2K, uses, J-PARC neutrino beamline]
-
A.
LBNF neutrino beamline
The LBNF neutrino beamline is a high-intensity, long-baseline facility designed to produce and direct neutrino beams from Fermilab to the DUNE detectors for precision studies of neutrino properties and fundamental physics.
-
B.
NuMI beamline
The NuMI beamline is a high-intensity neutrino production facility at Fermilab that generates neutrino beams for long-baseline particle physics experiments.
-
C.
Booster Neutrino Beam
The Booster Neutrino Beam is a high-intensity neutrino beamline at Fermilab used primarily for short-baseline neutrino experiments and precision studies of neutrino properties.
-
D.
SPS Heavy Ion and Neutrino Experiment
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target particle physics experiment at CERN’s Super Proton Synchrotron that studies hadron production in proton, pion, and ion collisions for strong-interaction physics and neutrino beam characterization.
-
E.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: J-PARC neutrino beamline Target entity description: The J-PARC neutrino beamline is a high-intensity neutrino production facility in Japan that generates and directs neutrino beams for long-baseline experiments such as T2K.
-
A.
LBNF neutrino beamline
The LBNF neutrino beamline is a high-intensity, long-baseline facility designed to produce and direct neutrino beams from Fermilab to the DUNE detectors for precision studies of neutrino properties and fundamental physics.
-
B.
NuMI beamline
The NuMI beamline is a high-intensity neutrino production facility at Fermilab that generates neutrino beams for long-baseline particle physics experiments.
-
C.
Booster Neutrino Beam
The Booster Neutrino Beam is a high-intensity neutrino beamline at Fermilab used primarily for short-baseline neutrino experiments and precision studies of neutrino properties.
-
D.
SPS Heavy Ion and Neutrino Experiment
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target particle physics experiment at CERN’s Super Proton Synchrotron that studies hadron production in proton, pion, and ion collisions for strong-interaction physics and neutrino beam characterization.
-
E.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
neutrino beamline
ⓘ
particle physics facility ⓘ |
| baselineLength | approximately 295 km ⓘ |
| baselineTo |
Super-Kamiokande detector
ⓘ
linked to:
Super-Kamiokande neutrino observatory
|
| beamDirection | towards Super-Kamiokande in Kamioka, Gifu, Japan ⓘ |
| beamType | off-axis neutrino beam ⓘ |
| constructionStart | mid-2000s ⓘ |
| country | Japan ⓘ |
| designFeature |
high-intensity neutrino production
ⓘ
off-axis angle optimization for narrow-band neutrino energy spectrum ⓘ |
| feedsExperiment |
Hyper-Kamiokande (planned)
ⓘ
linked to:
Super-Kamiokande neutrino observatory
T2K ⓘ |
| firstBeamToT2K | 2009 ⓘ |
| futureUse | primary beam source for Hyper-Kamiokande long-baseline program ⓘ |
| hasComponent |
beam dump
ⓘ
decay volume ⓘ magnetic focusing horns ⓘ muon monitors ⓘ near neutrino detectors ⓘ neutrino production target station ⓘ primary proton beamline ⓘ |
| hostLaboratory |
JAEA
ⓘ
linked to:
Japan Atomic Energy Agency
KEK ⓘ |
| locatedIn | Tokai, Ibaraki Prefecture, Japan ⓘ |
| nearDetectorsLocation |
J-PARC site in Tokai
ⓘ
linked to:
J-PARC
|
| notableResult | observation of electron neutrino appearance in a muon neutrino beam via T2K ⓘ |
| operatedBy |
High Energy Accelerator Research Organization (KEK)
ⓘ
J-PARC ⓘ Japan Atomic Energy Agency (JAEA) ⓘ
linked to:
Japan Atomic Energy Agency
|
| partOf |
Japan Proton Accelerator Research Complex
ⓘ
linked to:
J-PARC
|
| primaryBeam | proton beam ⓘ |
| primaryBeamEnergy | 30 GeV ⓘ |
| produces |
antineutrino beam
ⓘ
muon neutrino beam ⓘ |
| safetyFeature |
radiation shielding structures
ⓘ
remote handling systems in target station ⓘ |
| scientificDiscipline |
high-energy physics
ⓘ
neutrino physics ⓘ |
| status | operational ⓘ |
| supports |
measurement of θ23 and mass-squared differences
ⓘ
precision measurement of θ13 ⓘ |
| upgradeProgram | J-PARC power upgrade for higher beam intensity ⓘ |
| usedFor |
CP violation studies in the lepton sector
ⓘ
T2K experiment ⓘ
linked to:
T2K
long-baseline neutrino oscillation experiments ⓘ neutrino cross-section measurements ⓘ neutrino oscillation measurements ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: J-PARC neutrino beamline Description of subject: The J-PARC neutrino beamline is a high-intensity neutrino production facility in Japan that generates and directs neutrino beams for long-baseline experiments such as T2K.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.