Antihydrogen Laser Physics Apparatus
E210168
CERN experiment
antihydrogen experiment
antimatter experiment
atomic physics experiment
physics experiment
precision measurement experiment
Antihydrogen Laser Physics Apparatus is a CERN-based experiment designed to produce, trap, and study antihydrogen atoms with lasers to test fundamental symmetries between matter and antimatter.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Antihydrogen Laser Physics Apparatus canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1889291 — 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: Antihydrogen Laser Physics Apparatus Context triple: [ALPHA experiment, abbreviationOf, Antihydrogen Laser Physics Apparatus]
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A.
Antiproton Decelerator
The Antiproton Decelerator is a specialized CERN facility that slows down antiprotons to low energies for precision experiments in antimatter physics.
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B.
Isotope Separator On-Line Device
The Isotope Separator On-Line Device (ISOLDE) is a CERN facility that produces and studies a wide range of radioactive ion beams for nuclear physics, astrophysics, and materials science research.
-
C.
Muon g-2 experiment
The Muon g-2 experiment is a high-precision particle physics experiment that measures the anomalous magnetic moment of the muon to test the limits of the Standard Model and search for signs of new physics.
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D.
Brookhaven Linac Isotope Producer
The Brookhaven Linac Isotope Producer is a particle-accelerator-based facility at Brookhaven National Laboratory that generates medical and research isotopes for nuclear medicine and scientific applications.
-
E.
A Large Ion Collider Experiment
A Large Ion Collider Experiment (ALICE) is a major detector at CERN’s Large Hadron Collider designed to study the physics of strongly interacting matter and quark–gluon plasma created in high-energy heavy-ion collisions.
- 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: Antihydrogen Laser Physics Apparatus Target entity description: Antihydrogen Laser Physics Apparatus is a CERN-based experiment designed to produce, trap, and study antihydrogen atoms with lasers to test fundamental symmetries between matter and antimatter.
-
A.
Antiproton Decelerator
The Antiproton Decelerator is a specialized CERN facility that slows down antiprotons to low energies for precision experiments in antimatter physics.
-
B.
Isotope Separator On-Line Device
The Isotope Separator On-Line Device (ISOLDE) is a CERN facility that produces and studies a wide range of radioactive ion beams for nuclear physics, astrophysics, and materials science research.
-
C.
Muon g-2 experiment
The Muon g-2 experiment is a high-precision particle physics experiment that measures the anomalous magnetic moment of the muon to test the limits of the Standard Model and search for signs of new physics.
-
D.
Brookhaven Linac Isotope Producer
The Brookhaven Linac Isotope Producer is a particle-accelerator-based facility at Brookhaven National Laboratory that generates medical and research isotopes for nuclear medicine and scientific applications.
-
E.
A Large Ion Collider Experiment
A Large Ion Collider Experiment (ALICE) is a major detector at CERN’s Large Hadron Collider designed to study the physics of strongly interacting matter and quark–gluon plasma created in high-energy heavy-ion collisions.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
CERN experiment
ⓘ
antihydrogen experiment ⓘ antimatter experiment ⓘ atomic physics experiment ⓘ physics experiment ⓘ precision measurement experiment ⓘ |
| aimsTo |
compare hydrogen and antihydrogen spectra
ⓘ
produce antihydrogen ⓘ study antihydrogen with lasers ⓘ trap antihydrogen ⓘ |
| collaborationType | international collaboration ⓘ |
| country | Switzerland ⓘ |
| fullName | Antihydrogen Laser Physics Apparatus self-link ⓘ |
| goal |
high-precision measurement of antihydrogen spectral lines
ⓘ
search for differences between hydrogen and antihydrogen ⓘ test fundamental symmetries between matter and antimatter ⓘ |
| hasAcronym | ALPHA ⓘ |
| hostOrganization | CERN ⓘ |
| locatedAt | Antiproton Decelerator ⓘ |
| locatedIn | CERN ⓘ |
| produces |
cold antihydrogen
ⓘ
magnetically trapped antihydrogen ⓘ |
| relatedTo |
AEgIS experiment
ⓘ
ASACUSA experiment ⓘ ATRAP experiment ⓘ Antiproton Decelerator experiments ⓘ |
| researchField |
CPT symmetry tests
ⓘ
antihydrogen physics ⓘ antimatter physics ⓘ fundamental symmetries ⓘ precision spectroscopy ⓘ quantum electrodynamics tests ⓘ |
| studies |
antihydrogen atoms
ⓘ
matter–antimatter symmetry ⓘ |
| tests |
CPT invariance
ⓘ
Standard Model symmetries ⓘ weak equivalence principle for antimatter ⓘ |
| usesBeam |
antiproton beam
ⓘ
positron plasma ⓘ |
| usesFacility |
Antiproton Decelerator
ⓘ
surface form:
CERN Antiproton Decelerator
|
| usesMethod |
Ioffe–Pritchard trap
ⓘ
Penning traps ⓘ
surface form:
Penning trap
cryogenic vacuum technology ⓘ laser spectroscopy ⓘ magnetic trapping ⓘ microwave spectroscopy ⓘ particle detection ⓘ |
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: Antihydrogen Laser Physics Apparatus Description of subject: Antihydrogen Laser Physics Apparatus is a CERN-based experiment designed to produce, trap, and study antihydrogen atoms with lasers to test fundamental symmetries between matter and antimatter.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.