T2K
E133809
T2K is a long-baseline neutrino oscillation experiment in Japan that studies how neutrinos change type as they travel from J-PARC to the Super-Kamiokande detector.
All labels observed (3)
| Label | Occurrences |
|---|---|
| T2K experiment | 7 |
| T2K canonical | 3 |
| T2K near detectors | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1160877 — 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.
Target entity: T2K Context triple: [NA61/SHINE, supportsExperiment, T2K]
-
A.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
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B.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
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C.
Nisshoki
Nisshoki, more commonly known as the Hinomaru, is the national flag of Japan featuring a red sun disc centered on a white field.
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D.
Takanot
Takanot are rabbinic enactments or decrees established to address communal needs and clarify or safeguard Jewish law within Rabbinic Judaism.
-
E.
Yukawa
Yukawa is a Japanese surname most famously associated with theoretical physicist Hideki Yukawa, the first Japanese Nobel laureate in Physics.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: T2K Target entity description: T2K is a long-baseline neutrino oscillation experiment in Japan that studies how neutrinos change type as they travel from J-PARC to the Super-Kamiokande detector.
-
A.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
-
B.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
C.
Nisshoki
Nisshoki, more commonly known as the Hinomaru, is the national flag of Japan featuring a red sun disc centered on a white field.
-
D.
Takanot
Takanot are rabbinic enactments or decrees established to address communal needs and clarify or safeguard Jewish law within Rabbinic Judaism.
-
E.
Yukawa
Yukawa is a Japanese surname most famously associated with theoretical physicist Hideki Yukawa, the first Japanese Nobel laureate in Physics.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
long-baseline neutrino experiment
ⓘ
neutrino oscillation experiment ⓘ physics experiment ⓘ |
| abbreviationFor | Tokai to Kamioka ⓘ |
| baselineTo |
Kamiokande experiment
ⓘ
surface form:
Super-Kamiokande
|
| beamDirection | off-axis ⓘ |
| beamSource |
J-PARC neutrino beamline
ⓘ
surface form:
J-PARC
|
| beamType |
antineutrino beam
ⓘ
muon neutrino beam ⓘ |
| collaborationIncludes |
European institutions
ⓘ
Japanese institutions ⓘ North American institutions ⓘ |
| collaborationType | international collaboration ⓘ |
| contributedTo | first indication of non-zero theta_13 from accelerator neutrinos ⓘ |
| country | Japan ⓘ |
| dataTakingStarted | around 2009 ⓘ |
| energyRange | sub-GeV to few-GeV neutrinos ⓘ |
| farDetector |
Kamiokande experiment
ⓘ
surface form:
Super-Kamiokande
|
| farDetectorLocation |
Kamioka Observatory, Gifu Prefecture, Japan
ⓘ
surface form:
Kamioka, Gifu, Japan
|
| field |
neutrino physics
ⓘ
particle physics ⓘ |
| goal |
precise measurement of mass-squared differences
ⓘ
precise measurement of neutrino mixing angles ⓘ test three-flavor neutrino oscillation framework ⓘ |
| hostLaboratory | J-PARC ⓘ |
| locatedIn | Japan ⓘ |
| nearDetectorsLocation | J-PARC ⓘ |
| nearDetectorType |
INGRID
ⓘ
ND280 ⓘ |
| produces | pion decay neutrino beam ⓘ |
| purpose |
constrain neutrino mass hierarchy
ⓘ
measure mixing angle theta_13 ⓘ measure neutrino oscillation parameters ⓘ search for CP violation in the lepton sector ⓘ |
| reportedEvidenceFor | leptonic CP violation (delta_CP near -pi/2) ⓘ |
| studies |
electron neutrino appearance
ⓘ
muon neutrino disappearance ⓘ neutrino flavor change ⓘ neutrino oscillations ⓘ |
| uses |
J-PARC neutrino beamline
ⓘ
neutrino beam ⓘ |
| usesAccelerator |
J-PARC
ⓘ
surface form:
J-PARC Main Ring synchrotron
|
| usesBaselineLength | approximately 295 km ⓘ |
| usesDetector | water Cherenkov detector ⓘ |
| usesMagnet | magnetic horns ⓘ |
| usesTargetMaterial | graphite target ⓘ |
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.
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.
Subject: T2K Description of subject: T2K is a long-baseline neutrino oscillation experiment in Japan that studies how neutrinos change type as they travel from J-PARC to the Super-Kamiokande detector.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.