Oscillation Project with Emulsion-tRacking Apparatus
E566109
Oscillation Project with Emulsion-tRacking Apparatus (OPERA) was a particle physics experiment at the Gran Sasso Laboratory in Italy designed to study neutrino oscillations, particularly the appearance of tau neutrinos in a muon neutrino beam sent from CERN.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Oscillation Project with Emulsion-tRacking Apparatus canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6087961 — 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: Oscillation Project with Emulsion-tRacking Apparatus Context triple: [OPERA, fullName, Oscillation Project with Emulsion-tRacking Apparatus]
-
A.
Time Projection Chamber
The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
-
B.
Apparatus for Meson and Baryon Experimental Research
Apparatus for Meson and Baryon Experimental Research is a high-energy physics experiment designed to study the properties and interactions of mesons and baryons using particle beams and advanced detectors.
-
C.
Micromegas detectors
Micromegas detectors are high-granularity gaseous particle detectors that provide precise tracking and fast timing for high-energy physics experiments.
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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.
DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
- 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: Oscillation Project with Emulsion-tRacking Apparatus Target entity description: Oscillation Project with Emulsion-tRacking Apparatus (OPERA) was a particle physics experiment at the Gran Sasso Laboratory in Italy designed to study neutrino oscillations, particularly the appearance of tau neutrinos in a muon neutrino beam sent from CERN.
-
A.
Time Projection Chamber
The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
-
B.
Apparatus for Meson and Baryon Experimental Research
Apparatus for Meson and Baryon Experimental Research is a high-energy physics experiment designed to study the properties and interactions of mesons and baryons using particle beams and advanced detectors.
-
C.
Micromegas detectors
Micromegas detectors are high-granularity gaseous particle detectors that provide precise tracking and fast timing for high-energy physics experiments.
-
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.
DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
neutrino experiment
ⓘ
particle physics experiment ⓘ |
| abbreviation | OPERA NERFINISHED ⓘ |
| baselineEndpoints | CERN to Gran Sasso NERFINISHED ⓘ |
| baselineLength | approximately 730 km ⓘ |
| collaborationSize | over 100 scientists ⓘ |
| collaborationType | international collaboration ⓘ |
| confirmedTauNeutrinoAppearanceReported | 2015 ⓘ |
| country | Italy ⓘ |
| dataAnalysisFocus | identification of tau lepton decay topologies ⓘ |
| dataAnalysisMethod | emulsion tracking of charged particles ⓘ |
| detectorComponent |
emulsion bricks
ⓘ
emulsion films ⓘ lead plates ⓘ |
| detectorTechnology |
emulsion cloud chamber
ⓘ
nuclear emulsion ⓘ |
| endOfDataTaking | 2012 ⓘ |
| field | particle physics ⓘ |
| firstTauNeutrinoCandidateReported | 2010 ⓘ |
| fullName | Oscillation Project with Emulsion-tRacking Apparatus NERFINISHED ⓘ |
| fundedBy |
CERN
NERFINISHED
ⓘ
INFN NERFINISHED ⓘ various national funding agencies ⓘ |
| hostInstitution | INFN Gran Sasso National Laboratory NERFINISHED ⓘ |
| laboratoryType | underground laboratory ⓘ |
| locatedIn |
Gran Sasso National Laboratory
NERFINISHED
ⓘ
LNGS NERFINISHED ⓘ |
| locatedUnder | Gran Sasso massif NERFINISHED ⓘ |
| measures | neutrino flavor change over long baseline ⓘ |
| neutrinoSource | CERN Neutrinos to Gran Sasso beam NERFINISHED ⓘ |
| neutrinoSourceAbbreviation | CNGS NERFINISHED ⓘ |
| primaryGoal | direct observation of tau neutrino appearance in a muon neutrino beam ⓘ |
| relatedExperiment |
MINOS
NERFINISHED
ⓘ
Super-Kamiokande NERFINISHED ⓘ T2K NERFINISHED ⓘ |
| researchArea |
neutrino oscillations
ⓘ
tau neutrino appearance ⓘ |
| scientificOutcome | observation of tau neutrino appearance in a muon neutrino beam ⓘ |
| startOfDataTaking | 2008 ⓘ |
| status | completed experiment ⓘ |
| studies |
muon neutrino to tau neutrino oscillations
ⓘ
νμ→ντ oscillations ⓘ |
| supports | three-flavor neutrino oscillation model ⓘ |
| tests |
massive neutrino hypothesis
ⓘ
neutrino oscillation framework ⓘ |
| usesBeamFrom | CERN NERFINISHED ⓘ |
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: Oscillation Project with Emulsion-tRacking Apparatus Description of subject: Oscillation Project with Emulsion-tRacking Apparatus (OPERA) was a particle physics experiment at the Gran Sasso Laboratory in Italy designed to study neutrino oscillations, particularly the appearance of tau neutrinos in a muon neutrino beam sent from CERN.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.