The UA1 detector, shown here in its 'garage' position, was a multi-purpose detector. It covered as large a solid angle as possible and could detect hadron jets, electrons and muons. This was used between 1981 and 1993 on the SPS collider at CERN to observe the proton-antiproton collisions. UA1 was used along with UA2 to discover the W and Z bosons in 1983, which lead to Nobel Prizes for Carlo Rubbia and Simon van der Meer in 1984.
ENG
UA1;
detector;
detecteur;
1981
http://preprints.cern.ch/cgi-bin/setlink?base=PHO&categ=photo-hi&id=8104591;
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http://cds.cern.ch/record/615826/files/8104591.JPEG;
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Imported from Invenio.
UA1: first Z event recorded
CERN Courier vol 43 no 4 : May 2003
This image taken by the UA1 experiment on 30 April 1983 was the first detection of a Z0 particle. UA1 observed proton-antiproton collisions on the SPS between 1981 and 1993 to look for the Z and W bosons, which mediate the weak fundamental force. The Z0 decays very quickly so cannot be seen, but the electron-positron pair produced in the decay can be seen in blue.
ENG
1983
http://preprints.cern.ch/cgi-bin/setlink?base=PHO&categ=photo-ex&id=8704168;
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http://cds.cern.ch/record/615824/files/8704168.jpg;
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http://cds.cern.ch/record/615824/files/8704168.jpg?subformat=icon-720;
http://cds.cern.ch/record/615824/files/8704168.jpg?subformat=icon-180;
Imported from Invenio.
Detector for the UA2 experiment
CERN Picture Packs : The Z Story
Detector for the UA2 experiment, for the study of proton-antiproton collisions in the SPS between 1981 and 1993. It was used, along with UA1 (another experiment on the SPS), to discover the W and Z bosons in 1983, which won Carlo Rubbia and Simon van der Meer the Nobel Prize in 1984.
ENG
1987
http://preprints.cern.ch/cgi-bin/setlink?base=PHO&categ=photo-ex&id=8710495;
http://preprints.cern.ch/photo/photo-ex/8710495.gif;
http://cds.cern.ch/record/615821/files/8710495.jpg;
http://cds.cern.ch/record/615821/files/8710495.jpg?subformat=icon-1440;
http://cds.cern.ch/record/615821/files/8710495.jpg?subformat=icon-720;
http://cds.cern.ch/record/615821/files/8710495.jpg?subformat=icon-180;
Imported from Invenio.
Laurent Guiraud
The UA1 central detector, part of an exhibition about the Weak Force in Microcosm
<!--HTML-->Photo 09 : CERN's Director General, Luciano Maiani, at the opening of an exhibition about the Weak Force in Microcosm. <br>Photo 01 : CERN's Director General, Luciano Maiani, looking at the UA1 central detector at the opening of an exhibition in Microcosm.
Microcosm;
1999
http://preprints.cern.ch/photo/photo-em/9906007_05.gif;
http://preprints.cern.ch/cgi-bin/setlink?base=PHO&categ=photo-em&id=9906007;
http://cds.cern.ch/record/40522/files/9906007_01.JPEG;
http://cds.cern.ch/record/40522/files/9906007_05.JPEG;
http://cds.cern.ch/record/40522/files/9906007_09.JPEG;
http://cds.cern.ch/record/40522/files/9906007_01.jpg?subformat=icon-1440;
http://cds.cern.ch/record/40522/files/9906007_01.jpg?subformat=icon-720;
http://cds.cern.ch/record/40522/files/9906007_01.jpg?subformat=icon-180;
http://cds.cern.ch/record/40522/files/9906007_05.jpg?subformat=icon-1440;
http://cds.cern.ch/record/40522/files/9906007_05.jpg?subformat=icon-720;
http://cds.cern.ch/record/40522/files/9906007_05.jpg?subformat=icon-180;
http://cds.cern.ch/record/40522/files/9906007_09.jpg?subformat=icon-1440;
http://cds.cern.ch/record/40522/files/9906007_09.jpg?subformat=icon-720;
http://cds.cern.ch/record/40522/files/9906007_09.jpg?subformat=icon-180;
Imported from Invenio.
UA1: W particle decay
United Kingdom Outreach : Picture of the Week
The discovery of the W particle in the UA1 detector from the October-December 1982 run of the proton-antiproton collider, producing a high transverse energy electron (arrowed). This particle is produced back-to-back with 'missing energy', indicative of the emission of an invisible neutrino. The UA1 detector ran on the SPS accelerator at CERN between 1981 and 1993.
1982
http://preprints.cern.ch/photo/photo-ex/69576.gif;
http://preprints.cern.ch/cgi-bin/setlink?base=PHO&categ=photo-ex&id=69576;
http://cds.cern.ch/record/39467/files/69576.jpeg;
http://cds.cern.ch/record/39467/files/69576.gif?subformat=icon;
http://cds.cern.ch/record/39467/files/69576.jpeg?subformat=icon-1440;
http://cds.cern.ch/record/39467/files/69576.jpeg?subformat=icon-180;
http://cds.cern.ch/record/39467/files/69576.jpeg?subformat=icon-640;
Imported from Invenio.