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Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen

T Friesen, C Amole, M. D Ashkezari, M Baquero-Ruiz, W Bertsche, P. D Bowe, E Butler, A Capra, C. L Cesar, M Charlton, A Deller, N Evetts, S Eriksson, J Fajans, M. C Fujiwara, D. R Gill, A Gutierrez, J. S Hangst, W. N Hardy, M. E Hayden, C. A Isaac, S Jonsell, L Kurchaninov, A Little, N Madsen, J. T. K McKenna, S Menary, S. C Napoli, K Olchanski, A Olin, P Pusa, C. O Rasmussen, F Robicheaux, E Sarid, D. M Silveira, C So, S Stracka, R. I Thompson, D. P. van der Werf, J. S Wurtele, Dirk van der Werf Orcid Logo, Niels Madsen Orcid Logo, Aled Isaac Orcid Logo, Stefan Eriksson Orcid Logo

AIP Conference Proceedings, Volume: 1521, Issue: 1, Pages: 123 - 133

Swansea University Authors: Dirk van der Werf Orcid Logo, Niels Madsen Orcid Logo, Aled Isaac Orcid Logo, Stefan Eriksson Orcid Logo

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DOI (Published version): 10.1063/1.4796068

Abstract

Long term magnetic confinement of antihydrogen atoms has recently been demonstrated by the ALPHA collaboration at CERN, opening the door to a range of experimental possibilities. Of particular interest is a measurement of the antihydrogen spectrum. A precise comparison of the spectrum of antihydroge...

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Published in: AIP Conference Proceedings
ISSN: 0094-243X
Published: 2013
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URI: https://cronfa.swan.ac.uk/Record/cronfa14623
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spelling 2013-06-18T09:41:35.4094177 v2 14623 2013-04-22 Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen 4a4149ebce588e432f310f4ab44dd82a 0000-0001-5436-5214 Dirk van der Werf Dirk van der Werf true false e348e4d768ee19c1d0c68ce3a66d6303 0000-0002-7372-0784 Niels Madsen Niels Madsen true false 06d7ed42719ef7bb697cf780c63e26f0 0000-0002-7813-1903 Aled Isaac Aled Isaac true false 785cbd474febb1bfa9c0e14abaf9c4a8 0000-0002-5390-1879 Stefan Eriksson Stefan Eriksson true false 2013-04-22 SPH Long term magnetic confinement of antihydrogen atoms has recently been demonstrated by the ALPHA collaboration at CERN, opening the door to a range of experimental possibilities. Of particular interest is a measurement of the antihydrogen spectrum. A precise comparison of the spectrum of antihydrogen with that of hydrogen would be an excellent test of CPT symmetry. One prime candidate for precision CPT tests is the ground-state hyperfine transition; measured in hydrogen to a precision of nearly one part in 1012. Effective execution of such an experiment with trapped antihydrogen requires precise knowledge of the magnetic environment. Here we present a solution that uses an electron plasma confined in the antihydrogen trapping region. The cyclotron resonance of the electron plasma is probed with microwaves at the cyclotron frequency and the subsequent heating of the electron plasma is measured through the plasma quadrupole mode frequency. Using this method, the minimum magnetic field of the neutral trap can be determined to within 4 parts in 104. This technique was used extensively in the recent demonstration of resonant interaction with the hyperfine levels of trapped antihydrogen atoms. Conference Paper/Proceeding/Abstract AIP Conference Proceedings 1521 1 123 133 0094-243X 31 12 2013 2013-12-31 10.1063/1.4796068 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2013-06-18T09:41:35.4094177 2013-04-22T10:23:15.3713344 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics T Friesen 1 C Amole 2 M. D Ashkezari 3 M Baquero-Ruiz 4 W Bertsche 5 P. D Bowe 6 E Butler 7 A Capra 8 C. L Cesar 9 M Charlton 10 A Deller 11 N Evetts 12 S Eriksson 13 J Fajans 14 M. C Fujiwara 15 D. R Gill 16 A Gutierrez 17 J. S Hangst 18 W. N Hardy 19 M. E Hayden 20 C. A Isaac 21 S Jonsell 22 L Kurchaninov 23 A Little 24 N Madsen 25 J. T. K McKenna 26 S Menary 27 S. C Napoli 28 K Olchanski 29 A Olin 30 P Pusa 31 C. O Rasmussen 32 F Robicheaux 33 E Sarid 34 D. M Silveira 35 C So 36 S Stracka 37 R. I Thompson 38 D. P. van der Werf 39 J. S Wurtele 40 Dirk van der Werf 0000-0001-5436-5214 41 Niels Madsen 0000-0002-7372-0784 42 Aled Isaac 0000-0002-7813-1903 43 Stefan Eriksson 0000-0002-5390-1879 44
title Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
spellingShingle Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
Dirk van der Werf
Niels Madsen
Aled Isaac
Stefan Eriksson
title_short Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
title_full Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
title_fullStr Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
title_full_unstemmed Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
title_sort Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
author_id_str_mv 4a4149ebce588e432f310f4ab44dd82a
e348e4d768ee19c1d0c68ce3a66d6303
06d7ed42719ef7bb697cf780c63e26f0
785cbd474febb1bfa9c0e14abaf9c4a8
author_id_fullname_str_mv 4a4149ebce588e432f310f4ab44dd82a_***_Dirk van der Werf
e348e4d768ee19c1d0c68ce3a66d6303_***_Niels Madsen
06d7ed42719ef7bb697cf780c63e26f0_***_Aled Isaac
785cbd474febb1bfa9c0e14abaf9c4a8_***_Stefan Eriksson
author Dirk van der Werf
Niels Madsen
Aled Isaac
Stefan Eriksson
author2 T Friesen
C Amole
M. D Ashkezari
M Baquero-Ruiz
W Bertsche
P. D Bowe
E Butler
A Capra
C. L Cesar
M Charlton
A Deller
N Evetts
S Eriksson
J Fajans
M. C Fujiwara
D. R Gill
A Gutierrez
J. S Hangst
W. N Hardy
M. E Hayden
C. A Isaac
S Jonsell
L Kurchaninov
A Little
N Madsen
J. T. K McKenna
S Menary
S. C Napoli
K Olchanski
A Olin
P Pusa
C. O Rasmussen
F Robicheaux
E Sarid
D. M Silveira
C So
S Stracka
R. I Thompson
D. P. van der Werf
J. S Wurtele
Dirk van der Werf
Niels Madsen
Aled Isaac
Stefan Eriksson
format Conference Paper/Proceeding/Abstract
container_title AIP Conference Proceedings
container_volume 1521
container_issue 1
container_start_page 123
publishDate 2013
institution Swansea University
issn 0094-243X
doi_str_mv 10.1063/1.4796068
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
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description Long term magnetic confinement of antihydrogen atoms has recently been demonstrated by the ALPHA collaboration at CERN, opening the door to a range of experimental possibilities. Of particular interest is a measurement of the antihydrogen spectrum. A precise comparison of the spectrum of antihydrogen with that of hydrogen would be an excellent test of CPT symmetry. One prime candidate for precision CPT tests is the ground-state hyperfine transition; measured in hydrogen to a precision of nearly one part in 1012. Effective execution of such an experiment with trapped antihydrogen requires precise knowledge of the magnetic environment. Here we present a solution that uses an electron plasma confined in the antihydrogen trapping region. The cyclotron resonance of the electron plasma is probed with microwaves at the cyclotron frequency and the subsequent heating of the electron plasma is measured through the plasma quadrupole mode frequency. Using this method, the minimum magnetic field of the neutral trap can be determined to within 4 parts in 104. This technique was used extensively in the recent demonstration of resonant interaction with the hyperfine levels of trapped antihydrogen atoms.
published_date 2013-12-31T03:18:07Z
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