Physics:UA3 experiment
The Underground Area 3 (UA3) experiment was a high-energy physics experiment at the Proton-Antiproton Collider (SppS), a modification of the Super Proton Synchrotron (SPS), at CERN. The experiment ran from 1978 to 1988 with the objective of searching for magnetic monopoles.[1] No evidence for magnetic monopoles was found by the UA3 experiment.[2]
The experiment shares the same intersection region used as the UA1 colliding experiment, and looked for expected high ionisation of magnetic monopole in plastic detectors.[3] The beam pipe was a stainless steel corrugated cylinder, with 0.2 mm thickness.[4]
Plastic detectors were used as they are best suited to the chemically etched tracks left by the ionising particles, and they resist high temperatures during baking.[5][4] The plastic detectors used were 125μm thick kapton foils. The foils were placed inside of the vacuum chamber and around the central track detector for the UA1.[6] Three cylindrical and four transverse layers of detectors were placed between three chambers: two forward chambers and a central chamber. This covered the maximum solid angle possible.[5]
Holes etched along a monopole track were determined using diffusion of a gas or dye through the holes, followed by a chemical reaction. The ionisation rates of magnetic monopoles were predicted to be very high due to their short range.[5]
See also
External links
References
- ↑ "Greybook". https://greybook.cern.ch/experiment/detail?id=UA3.
- ↑ Dowell, John D (1985). "Proton antiproton physics" (in en). CERN. doi:10.5170/CERN-1985-011.1. http://cds.cern.ch/record/880961.
- ↑ Price, Michael J. (1984), Stone, James L., ed., "Experimental Searches for Magnetic Monopoles at Particle Colliders" (in en), Monopole ’83, NATO ASI Series (Boston, MA: Springer US) 111: pp. 621–624, doi:10.1007/978-1-4757-0375-7_61, ISBN 978-1-4757-0375-7, https://doi.org/10.1007/978-1-4757-0375-7_61, retrieved 2023-08-03
- ↑ 4.0 4.1 Aubert, B.; Musset, P.; Price, M.; Vialle, J.P. (12 Oct 1982). "Search for magnetic monopoles in proton-antiproton interactions at 540 GeV cm energy" (in en). Physics Letters B 120 (4–6): 465–467. doi:10.1016/0370-2693(83)90488-4. https://linkinghub.elsevier.com/retrieve/pii/0370269383904884.
- ↑ 5.0 5.1 5.2 Aubert, B; Musset, P; Price, M; Vialle, J P (2 Feb 1978). "Search for Magnetic Monopoles". Proposal to the SPSC. https://cds.cern.ch/record/596854/files/CM-P00045655.pdf.
- ↑ Dowell, J D (1983). "Physics Results from the CERN Proton-Antiproton Collider". Department of Physics, University of Birmingham, England. https://inis.iaea.org/collection/NCLCollectionStore/_Public/14/801/14801411.pdf.
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