KamLAND experiment
E716234
long-baseline neutrino experiment
neutrino observatory
physics experiment
reactor neutrino experiment
The KamLAND experiment is a neutrino observatory in Japan that made landmark measurements of neutrino oscillations by detecting antineutrinos from distant nuclear reactors and the Earth’s interior.
All labels observed (4)
| Label | Occurrences |
|---|---|
| KamLAND | 3 |
| KamLAND experiment canonical | 2 |
| KamLAND underground laboratory | 1 |
| Kamioka Liquid Scintillator Antineutrino Detector (KamLAND) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8175001 — 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: KamLAND experiment Context triple: [Kamioka Observatory, knownFor, KamLAND experiment]
-
A.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
-
B.
Baksan Neutrino Observatory
The Baksan Neutrino Observatory is a Russian underground research facility in the Caucasus Mountains dedicated to detecting neutrinos and studying rare subatomic processes in a low-background environment.
-
C.
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).
-
D.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
-
E.
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.
- 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: KamLAND experiment Target entity description: The KamLAND experiment is a neutrino observatory in Japan that made landmark measurements of neutrino oscillations by detecting antineutrinos from distant nuclear reactors and the Earth’s interior.
-
A.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
-
B.
Baksan Neutrino Observatory
The Baksan Neutrino Observatory is a Russian underground research facility in the Caucasus Mountains dedicated to detecting neutrinos and studying rare subatomic processes in a low-background environment.
-
C.
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).
-
D.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
-
E.
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
long-baseline neutrino experiment
ⓘ
neutrino observatory ⓘ physics experiment ⓘ reactor neutrino experiment ⓘ |
| announcedFirstOscillationResult | 2002 ⓘ |
| basedOnDetectorType | liquid scintillator detector ⓘ |
| collaborationIncludes |
European institutions
ⓘ
Japanese institutions ⓘ United States institutions ⓘ |
| collaborationSize | of order 100 scientists ⓘ |
| confirmed | Large Mixing Angle solution of solar neutrino problem ⓘ |
| contributedTo |
constraints on radiogenic heat production in the Earth
ⓘ
global fits of neutrino oscillation parameters ⓘ |
| country | Japan ⓘ |
| detected | geoneutrinos from Earth’s interior ⓘ |
| detectionMethod | inverse beta decay ⓘ |
| detects |
electron antineutrinos
ⓘ
geoneutrinos ⓘ reactor antineutrinos ⓘ |
| field |
astroparticle physics
ⓘ
neutrino physics ⓘ |
| firstDataTaking | 2002 ⓘ |
| hasDetectorMass | about 1 kiloton of liquid scintillator ⓘ |
| locatedIn |
Gifu Prefecture
NERFINISHED
ⓘ
Hida ⓘ Honshu ⓘ Japan ⓘ Kamioka Observatory ⓘ
linked to:
Kamioka Observatory, Gifu Prefecture, Japan
Kamioka mine ⓘ |
| locatedUndergroundDepth |
approximately 1000 meters
ⓘ
approximately 2700 meters water equivalent ⓘ |
| madeLandmarkMeasurement |
precision measurement of Δm²21
ⓘ
precision measurement of θ12 ⓘ |
| measured | disappearance of reactor antineutrinos over long baselines ⓘ |
| operatedBy | University of Tokyo ⓘ |
| primaryPhysicsGoal |
measurement of neutrino mixing parameters
ⓘ
measurement of neutrino oscillations ⓘ |
| providedEvidenceFor | neutrino oscillations using reactor antineutrinos ⓘ |
| receivesAntineutrinosFrom |
distant nuclear reactors
ⓘ
multiple Japanese nuclear power plants ⓘ |
| relatedTo |
Borexino experiment
ⓘ
linked to:
Borexino
Super-Kamiokande experiment ⓘ
linked to:
Super-Kamiokande neutrino observatory
|
| shielding | located deep underground ⓘ |
| studies |
mass-squared difference Δm²21
ⓘ
mixing angle θ12 ⓘ solar neutrino oscillation parameters ⓘ |
| surroundedBy |
buffer oil
ⓘ
photomultiplier tubes ⓘ |
| typicalBaseline | about 180 km from nuclear reactors ⓘ |
| usesTargetMaterial | ultra-pure liquid scintillator ⓘ |
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: KamLAND experiment Description of subject: The KamLAND experiment is a neutrino observatory in Japan that made landmark measurements of neutrino oscillations by detecting antineutrinos from distant nuclear reactors and the Earth’s interior.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Kamioka Observatory, Gifu Prefecture, Japan
subject linked to:
Kamioka Observatory, Gifu Prefecture, Japan
linked to: KamLAND experiment
linked to: KamLAND experiment
linked to: KamLAND experiment
linked to: KamLAND experiment