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Antimatter Plasmas in a Multipole Trap for Antihydrogen / Niels Madsen, G Andresen, W Bertsche, A Boston, P Bowe, C Cesar, S Chapman, M Charlton, M Chartier, A Deutsch, J Fajans, M Fujiwara, R Funakoshi, D Gill, K Gomberoff, J Hangst, R Hayano, R Hydomako, M Jenkins, L Jørgensen, L Kurchaninov, N Madsen, P Nolan, K Olchanski, A Olin, A Povilus, F Robicheaux, E Sarid, D Silveira, J Storey, H Telle, R Thompson, D. van der Werf, J Wurtele, Y Yamazaki, Dirk van der Werf

Physical Review Letters, Volume: 98, Issue: 2

Swansea University Authors: Niels Madsen, Dirk van der Werf

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Abstract

We have demonstrated storage of plasmas of the charged constituents of the antihydrogen atom, antiprotons and positrons, in a Penning trap surrounded by a minimum-B magnetic trap designed for holding neutral antiatoms. The neutral trap comprises a superconducting octupole and two superconducting, so...

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Published in: Physical Review Letters
ISSN: 0031-9007 1079-7114
Published: 2007
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URI: https://cronfa.swan.ac.uk/Record/cronfa1558
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Abstract: We have demonstrated storage of plasmas of the charged constituents of the antihydrogen atom, antiprotons and positrons, in a Penning trap surrounded by a minimum-B magnetic trap designed for holding neutral antiatoms. The neutral trap comprises a superconducting octupole and two superconducting, solenoidal mirror coils. We have measured the storage lifetimes of antiproton and positron plasmas in the combined Penning-neutral trap, and compared these to lifetimes without the neutral trap fields. The magnetic well depth was 0.6 T, deep enough to trap ground state antihydrogen atoms of up to about 0.4 K in temperature. We have demonstrated that both particle species can be stored for times long enough to permit antihydrogen production and trapping studies.
Item Description: This paper demonstrated that it is possible to store antiparticle plasmas in a Penning trap surrounded by a minimum-B magnetic trap (to capture the neutral antiatoms) and is a crucial milestone towards antihydrogen trapping. Van der Werf played a leading role in the construction and operation of the magnet system.
College: College of Science
Issue: 2