| 词条 | UA5 experiment |
| 释义 |
The UA5 experiment was the first experiment conducted at the Proton-Antiproton Collider (Sp{{overline|p}}S), a collider using the infrastructure of the Super Proton Synchrotron (SPS). The experiment was approved in February 1979, as a collaboration between CERN and the universities of Bonn, Brussels, Cambridge and Stockholm.[1] The spokesperson of the UA5 collaboration was John Rushbrooke.[2] The object of the experiment was to investigate Centauro events[1] and more generally to perform a first rapid visual survey of the energy region afforded by the then new SPS collider.[3] Measurements were done on proton-antiproton collisions of 540 GeV center-of-mass energy, with the results being published in November 1983.[4] Later, under the name of UA5/2, data was recorded from 900 GeV collisions.[5] No indication of Centauro production was observed, but an upper limit on the production was obtained.[5] The experimental setup consisted of two large streamer chambers which were placed above and below the Sp{{overline|p}}S beam pipe. The chambers were triggered by requiring hits in scintillation counters at each end. This trigger rejected essentially all elastic and diffractive elements.[4] The streamer chamber tracks were photographed by six cameras, and the tracks were measured, reconstructed and analyzed. See also
References1. ^1 {{Cite web|url=http://cds.cern.ch/record/1009444/files/CM-P00063814.pdf|title=Decisions of the 32nd Meeting of the Research Board|last=Goldchmidt-Clermont|first=Y.|date=15 February 1979|website=CERN Document Server|archive-url=|archive-date=|dead-url=|access-date=18 July 2017}} 2. ^{{cite web |url=https://greybook.cern.ch/greybook/experiment/detail?id=UA5 |title=UA5 |author= |website=CERN Greybook |publisher=CERN |accessdate=18 July 2017}} 3. ^{{Cite paper |last=Rushbrooke |first=John |title=The UA5 Streamer Chamber Experiment at the SPS p-pbar Collider |journal=Physica Scripta |volume=23 |issue=4B |pages=642–648 |doi=10.1088/0031-8949/23/4B/006 |year=1981 |bibcode=1981PhyS...23..642B }} 4. ^1 {{cite journal|last1=Alpgård|first1=K.|display-authors=etal|title=Particle multiplicities in interactions at √s=540 GeV|journal=Physics Letters B|date=January 1983|volume=121|issue=2–3|pages=209–215|doi=10.1016/0370-2693(83)90916-4|bibcode=1983PhLB..121..209A}} 5. ^1 {{cite conference |url=http://cds.cern.ch/record/154847/files/cer-000066115.pdf |title=Results from the UA5 Experiment at the CERN pp-collider |last1=Geich-Gimbel |first1=Ch.|date=9 July 1984 |publisher=Bonn University |location=Durham, UK |conference=VIIth European Symposium on Antiproton Interaction}} External links
2 : Particle experiments|CERN experiments |
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