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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

Swansea University Author: Dirk van der Werf 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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ISSN: 0094-243X
Published: 2013
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URI: https://cronfa.swan.ac.uk/Record/cronfa15932
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One prime candidate for precision CPT tests is the ground-state hyperfine transition; measured in hydrogen to a precision of nearly one part in 10^12. 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 10^4. 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spelling 2013-09-13T21:13:01.9179799 v2 15932 2013-09-13 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 2013-09-13 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 10^12. 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 10^4. This technique was used extensively in the recent demonstration of resonant interaction with the hyperfine levels of trapped antihydrogen atoms. Conference Paper/Proceeding/Abstract 133 0094-243X 31 12 2013 2013-12-31 10.1063/1.4796068 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2013-09-13T21:13:01.9179799 2013-09-13T21:06:40.5302883 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
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
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
author_id_fullname_str_mv 4a4149ebce588e432f310f4ab44dd82a_***_Dirk van der Werf
author Dirk van der Werf
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
format Conference Paper/Proceeding/Abstract
publishDate 2013
institution Swansea University
issn 0094-243X
doi_str_mv 10.1063/1.4796068
college_str Faculty of Science and Engineering
hierarchytype
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
document_store_str 0
active_str 0
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 10^12. 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 10^4. This technique was used extensively in the recent demonstration of resonant interaction with the hyperfine levels of trapped antihydrogen atoms.
published_date 2013-12-31T03:18:12Z
_version_ 1763750436776443904
score 11.014067

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