SPEAR storage ring
E446220
The SPEAR storage ring is an electron storage ring at SLAC National Accelerator Laboratory that historically served as both a particle physics collider and a synchrotron radiation source, forming the basis for later upgrades like SPEAR3.
All labels observed (2)
| Label | Occurrences |
|---|---|
| SPEAR storage ring canonical | 2 |
| Stanford Positron Electron Asymmetric Ring 3 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4486860 — 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: SPEAR storage ring Context triple: [SPEAR3 synchrotron light source, upgradeOf, SPEAR storage ring]
-
A.
Fermilab Linac
Fermilab Linac is a linear accelerator at Fermilab that provides high-energy proton beams for subsequent acceleration stages in the laboratory’s particle physics experiments.
-
B.
Proton Synchrotron Booster
The Proton Synchrotron Booster is a circular particle accelerator at CERN that increases the energy of protons from the linear accelerator before injecting them into larger synchrotrons in the accelerator complex.
-
C.
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.
-
D.
Fermilab Booster
Fermilab Booster is a rapid-cycling synchrotron at Fermilab that accelerates protons to intermediate energies before sending them to higher-energy accelerators and experiments.
-
E.
Antiproton Decelerator
The Antiproton Decelerator is a specialized CERN facility that slows down antiprotons to low energies for precision experiments in antimatter physics.
- 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: SPEAR storage ring Target entity description: The SPEAR storage ring is an electron storage ring at SLAC National Accelerator Laboratory that historically served as both a particle physics collider and a synchrotron radiation source, forming the basis for later upgrades like SPEAR3.
-
A.
Fermilab Linac
Fermilab Linac is a linear accelerator at Fermilab that provides high-energy proton beams for subsequent acceleration stages in the laboratory’s particle physics experiments.
-
B.
Proton Synchrotron Booster
The Proton Synchrotron Booster is a circular particle accelerator at CERN that increases the energy of protons from the linear accelerator before injecting them into larger synchrotrons in the accelerator complex.
-
C.
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.
-
D.
Fermilab Booster
Fermilab Booster is a rapid-cycling synchrotron at Fermilab that accelerates protons to intermediate energies before sending them to higher-energy accelerators and experiments.
-
E.
Antiproton Decelerator
The Antiproton Decelerator is a specialized CERN facility that slows down antiprotons to low energies for precision experiments in antimatter physics.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
electron storage ring
ⓘ
particle accelerator ⓘ storage ring ⓘ synchrotron radiation source ⓘ |
| acceleratorType | circular accelerator ⓘ |
| associatedWith |
Stanford Synchrotron Radiation Laboratory
ⓘ
linked to:
Stanford Synchrotron Radiation Lightsource
Stanford Synchrotron Radiation Lightsource ⓘ |
| beamType | electron beam ⓘ |
| collisionType | electron–positron collider ⓘ |
| country | United States of America ⓘ |
| energyRange | GeV-scale electron energies ⓘ |
| field |
accelerator physics
ⓘ
synchrotron radiation science ⓘ |
| hasApplication |
chemical dynamics studies
ⓘ
crystallography ⓘ imaging ⓘ spectroscopy ⓘ surface science ⓘ |
| hasBeam | stored electron beam ⓘ |
| hasFunction |
provide insertion device beamlines
ⓘ
store high-energy electron beams ⓘ |
| hasGeometry | circular storage ring ⓘ |
| hasUpgrade |
SPEAR2
ⓘ
SPEAR3 ⓘ |
| historicalUse |
particle physics collider
ⓘ
synchrotron radiation source ⓘ |
| institutionalAffiliation | U.S. Department of Energy national laboratory system ⓘ |
| locatedAt |
SLAC site on Sand Hill Road
ⓘ
linked to:
Stanford Research Park
|
| locatedIn |
Menlo Park, California
ⓘ
SLAC National Accelerator Laboratory ⓘ |
| notableFor |
forming basis for SPEAR3 upgrade
ⓘ
providing synchrotron radiation for early SSRL experiments ⓘ |
| operatedBy |
SLAC National Accelerator Laboratory
ⓘ
Stanford University ⓘ |
| partOf | Stanford Synchrotron Radiation Lightsource ⓘ |
| radiationType | X-ray synchrotron radiation ⓘ |
| successor | SPEAR3 ⓘ |
| usedFor |
X-ray generation
ⓘ
condensed matter physics research ⓘ electron–positron collisions ⓘ materials science research ⓘ particle physics experiments ⓘ structural biology research ⓘ synchrotron radiation production ⓘ |
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: SPEAR storage ring Description of subject: The SPEAR storage ring is an electron storage ring at SLAC National Accelerator Laboratory that historically served as both a particle physics collider and a synchrotron radiation source, forming the basis for later upgrades like SPEAR3.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: SPEAR storage ring