CLAS
E122120
CLAS is a major particle detector at the Thomas Jefferson National Accelerator Facility used for studying the structure and interactions of subatomic particles.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T1036862 — 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: CLAS Context triple: [Jefferson Lab, abbreviation, CLAS]
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A.
CLCS
CLCS is a United Nations body of experts that evaluates and makes recommendations on coastal states’ claims to the outer limits of their continental shelves under the UN Convention on the Law of the Sea.
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B.
CLS
The Mercedes-Benz CLS is a luxury four-door coupé known for pioneering the modern coupé-sedan design with sleek styling and high-end performance.
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C.
CLST
CLST is the daylight saving time zone used in Chile during the southern hemisphere summer months.
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D.
CLA
The Mercedes-Benz CLA is a compact luxury four-door coupé known for its sleek styling, advanced technology, and entry-level positioning within the brand’s lineup.
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E.
UCLS
UCLS is a renowned private day school in Chicago affiliated with the University of Chicago, known for its progressive education and strong academic programs from nursery through high school.
- 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: CLAS Target entity description: CLAS is a major particle detector at the Thomas Jefferson National Accelerator Facility used for studying the structure and interactions of subatomic particles.
-
A.
CLCS
CLCS is a United Nations body of experts that evaluates and makes recommendations on coastal states’ claims to the outer limits of their continental shelves under the UN Convention on the Law of the Sea.
-
B.
CLS
The Mercedes-Benz CLS is a luxury four-door coupé known for pioneering the modern coupé-sedan design with sleek styling and high-end performance.
-
C.
CLST
CLST is the daylight saving time zone used in Chile during the southern hemisphere summer months.
-
D.
CLA
The Mercedes-Benz CLA is a compact luxury four-door coupé known for its sleek styling, advanced technology, and entry-level positioning within the brand’s lineup.
-
E.
UCLS
UCLS is a renowned private day school in Chicago affiliated with the University of Chicago, known for its progressive education and strong academic programs from nursery through high school.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
particle detector
ⓘ
spectrometer ⓘ |
| abbreviation | CLAS ⓘ |
| acronymFor | CEBAF Large Acceptance Spectrometer ⓘ |
| associatedWith |
12 GeV Upgrade at Jefferson Lab
ⓘ
linked to:
Jefferson Lab
|
| beamType | electron beam ⓘ |
| component |
Cherenkov counters
ⓘ
drift chambers ⓘ electromagnetic calorimeters ⓘ time-of-flight scintillators ⓘ toroidal magnet ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dataType |
exclusive final-state particle kinematics
ⓘ
multi-particle final states ⓘ |
| designedFor |
electron scattering experiments
ⓘ
electroproduction experiments ⓘ photoproduction experiments ⓘ |
| energyRange | few GeV electron energies ⓘ |
| feature |
large solid-angle acceptance
ⓘ
magnetic spectrometer system ⓘ multi-particle detection capability ⓘ |
| field |
hadronic physics
ⓘ
nuclear physics ⓘ particle physics ⓘ |
| fullName | CEBAF Large Acceptance Spectrometer ⓘ |
| fundedBy |
U.S. Department of Energy Office of Science
ⓘ
linked to:
Office of Science
|
| hostInstitution | U.S. Department of Energy ⓘ |
| locatedIn |
Newport News, Virginia
ⓘ
Thomas Jefferson National Accelerator Facility ⓘ
linked to:
Jefferson Lab
|
| notableFor |
large acceptance in azimuthal angle
ⓘ
simultaneous detection of many charged particles ⓘ |
| operatedBy | Jefferson Lab ⓘ |
| operator |
Thomas Jefferson National Accelerator Facility
ⓘ
linked to:
Jefferson Lab
|
| purpose |
study of hadron spectroscopy
ⓘ
study of nucleon resonances ⓘ study of subatomic particle interactions ⓘ study of the structure of nucleons ⓘ |
| researchArea |
baryon spectroscopy
ⓘ
generalized parton distributions ⓘ meson production ⓘ nucleon structure ⓘ spin structure of the nucleon ⓘ |
| successor |
CLAS12
ⓘ
linked to:
CLAS detector in Hall B
|
| usedAt | Continuous Electron Beam Accelerator Facility ⓘ |
| usedFor |
exclusive reaction studies
ⓘ
inclusive reaction studies ⓘ measurement of differential cross sections ⓘ measurement of polarization observables ⓘ |
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: CLAS Description of subject: CLAS is a major particle detector at the Thomas Jefferson National Accelerator Facility used for studying the structure and interactions of subatomic particles.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.