Conference Paper/Proceeding/Abstract 1147 views
Evaporative cooling of antiprotons for the production of trappable antihydrogen
AIP Conference Proceedings, Volume: 1521, Pages: 165 - 174
Swansea University Authors:
Dirk van der Werf , Niels Madsen
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DOI (Published version): 10.1063/1.4796072
Abstract
We describe the implementation of evaporative cooling of charged particles in the ALPHA apparatus. Forced evaporation has been applied to cold samples of antiprotons held in Malmberg-Penning traps. Temperatures on the order of 10 K were obtained, while retaining a significant fraction of the initial...
Published in: | AIP Conference Proceedings |
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ISSN: | 0094-243X |
Published: |
2013
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Online Access: |
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URI: | https://cronfa.swan.ac.uk/Record/cronfa14622 |
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Abstract: |
We describe the implementation of evaporative cooling of charged particles in the ALPHA apparatus. Forced evaporation has been applied to cold samples of antiprotons held in Malmberg-Penning traps. Temperatures on the order of 10 K were obtained, while retaining a significant fraction of the initial number of particles. We have developed a model for the evaporation process based on simple rate equations and applied it succesfully to the experimental data. We have also observed radial re-distribution of the clouds following evaporation, explained by simple conservation laws. We discuss the relevance of this technique for the recent demonstration of magnetic trapping of antihydrogen. |
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College: |
Faculty of Science and Engineering |
Start Page: |
165 |
End Page: |
174 |