Linac4
E1915
Linac4 is a linear accelerator at CERN that serves as the first stage of the proton acceleration chain for the Large Hadron Collider and other experiments.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Linac4 canonical | 7 |
| LINAC4 | 3 |
| LINAC2 / LINAC4 | 1 |
| Linear Accelerator 4 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T20792 — 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: Linac4 Context triple: [CERN, operates, Linac4]
-
A.
CERN
CERN is the European Organization for Nuclear Research, renowned for its large particle accelerators and fundamental physics experiments that have led to major discoveries such as the Higgs boson.
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B.
Oppenheimer–Phillips process
The Oppenheimer–Phillips process is a nuclear reaction mechanism in which a deuteron interacting with a target nucleus effectively transfers its neutron while the proton is repelled, enabling certain reactions to occur at lower energies than would otherwise be required.
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C.
Baade Telescope
The Baade Telescope is one of the twin 6.5-meter Magellan optical telescopes used for cutting-edge astronomical research in Chile.
-
D.
Los Alamos Laboratory
Los Alamos Laboratory was the secret U.S. research facility in New Mexico where the Manhattan Project developed the first atomic bombs during World War II.
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E.
MAUD Committee
The MAUD Committee was a British scientific advisory group during World War II that conducted pioneering research into the feasibility of an atomic bomb, helping to spur the later development of the Manhattan Project.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Linac4 Target entity description: Linac4 is a linear accelerator at CERN that serves as the first stage of the proton acceleration chain for the Large Hadron Collider and other experiments.
-
A.
CERN
CERN is the European Organization for Nuclear Research, renowned for its large particle accelerators and fundamental physics experiments that have led to major discoveries such as the Higgs boson.
-
B.
Oppenheimer–Phillips process
The Oppenheimer–Phillips process is a nuclear reaction mechanism in which a deuteron interacting with a target nucleus effectively transfers its neutron while the proton is repelled, enabling certain reactions to occur at lower energies than would otherwise be required.
-
C.
Chicago Metallurgical Laboratory
The Chicago Metallurgical Laboratory was a key Manhattan Project research center at the University of Chicago where scientists developed nuclear reactor technology and laid the groundwork for the first controlled, self-sustaining nuclear chain reaction.
-
D.
Baade Telescope
The Baade Telescope is one of the twin 6.5-meter Magellan optical telescopes used for cutting-edge astronomical research in Chile.
-
E.
Los Alamos Laboratory
Los Alamos Laboratory was the secret U.S. research facility in New Mexico where the Manhattan Project developed the first atomic bombs during World War II.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
CERN accelerator complex component
ⓘ
linear particle accelerator ⓘ proton linear accelerator ⓘ |
| accelerates |
H- ions
ⓘ
protons ⓘ |
| aim | provide higher brightness beams than Linac2 ⓘ |
| beamType | pulsed beam ⓘ |
| commissionedAsLHCInjector | 2020 ⓘ |
| completionDate | around 2016 ⓘ |
| constructionStartDate | 2008 ⓘ |
| country | Switzerland ⓘ |
| designEnergy | 160 MeV ⓘ |
| energyRange | from 45 keV to 160 MeV ⓘ |
| firstBeamDate | 2013 ⓘ |
| fundingBody | CERN member states ⓘ |
| hasComponent |
drift tube linac (DTL)
ⓘ
surface form:
cell-coupled drift tube linac (CCDTL)
drift tube linac (DTL) ⓘ pi-mode structure (PIMS) ⓘ radio-frequency quadrupole (RFQ) ⓘ |
| improves |
LHC beam brightness
ⓘ
LHC luminosity potential ⓘ |
| injectionEnergyTo | 160 MeV to Proton Synchrotron Booster ⓘ |
| injectionType | H- charge-exchange injection into PSB ⓘ |
| length | approximately 86 meters ⓘ |
| locatedIn |
CERN
ⓘ
Meyrin, Canton of Geneva, Switzerland ⓘ
surface form:
Meyrin, Switzerland
|
| locatedUnderground | true ⓘ |
| operationalStartDate | 2020 ⓘ |
| operator | CERN ⓘ |
| partOf |
CERN accelerator complex
ⓘ
LHC injector chain ⓘ |
| primaryFunction |
first stage of proton acceleration chain for the LHC
ⓘ
injector for the Proton Synchrotron Booster ⓘ |
| relatedProject | LHC Injectors Upgrade (LIU) ⓘ |
| replacedAcceleratorEnergy | Linac2 50 MeV injection energy ⓘ |
| replaces | Linac2 ⓘ |
| scientificDiscipline | particle physics ⓘ |
| servesExperiments |
Large Hadron Collider
ⓘ
surface form:
Large Hadron Collider experiments
other CERN fixed-target and test-beam experiments ⓘ |
| status | operational ⓘ |
| technology | normal-conducting RF cavities ⓘ |
| usedFor |
feeding protons to the Large Hadron Collider
ⓘ
feeding protons to the Proton Synchrotron ⓘ feeding protons to the Proton Synchrotron Booster ⓘ feeding protons to the Super Proton Synchrotron ⓘ |
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: Linac4 Description of subject: Linac4 is a linear accelerator at CERN that serves as the first stage of the proton acceleration chain for the Large Hadron Collider and other experiments.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.