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The ALPHA-2 apparatus - facilitating experimentation with trapped antihydrogen
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B.X.R. Alves,
Christopher Baker ,
M. Baquero-Ruiz,
W. Bertsche,
Eoin Butler,
Christopher Burrows,
A. Capra ,
C.L. Cesar ,
Michael Charlton,
R. Collister,
April Cridland ,
Stefan Eriksson ,
A. Evans,
L.T. Evans,
N. Evetts,
J. Fajans,
T. Friesen,
M.C. Fujiwara,
D.R. Gill,
P. Grandemange ,
P. Granum ,
A. Gutierrez,
J.S. Hangst,
M.E. Hayden,
D. Hodgkinson ,
Aled Isaac ,
A. Ishida ,
M.A. Johnson ,
Jack Jones,
S.A. Jones ,
S. Jonsell ,
A. Khramov,
L. Kurchaninov ,
A. Little,
Niels Madsen ,
Daniel Maxwell ,
J.T.K. McKenna ,
S. Menary,
J.M. Michan,
T. Momose ,
Patrick Mullan,
K. Olchanski,
A. Olin ,
JOANNA PESZKA,
A. Povilus,
A. Powell ,
P. Pusa,
C.Ø. Rasmussen,
R.L. Sacramento,
M. Sameed ,
E. Sarid,
D.M. Silveira,
C. So,
S. Stracka ,
G. Stutter,
T.D. Tharp ,
R.I. Thompson,
C. Torkzaban ,
Dirk van der Werf ,
J.S. Wurtele
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume: 1072, Start page: 170194
Swansea University Authors:
Christopher Baker , Eoin Butler, Christopher Burrows, Michael Charlton, April Cridland , Stefan Eriksson , Aled Isaac , Jack Jones, Niels Madsen , Daniel Maxwell , Patrick Mullan, JOANNA PESZKA, Dirk van der Werf
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© 2025 The Authors. This is an open access article under the CC BY license.
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DOI (Published version): 10.1016/j.nima.2024.170194
Abstract
This paper describes the ALPHA-2 apparatus, used at the CERN Antiproton Decelerator facility for the study of trapped antihydrogen atoms. Details of both the construction and performance are included. Prominence is given to both the new and the improved features, with respect to the original ALPHA a...
| Published in: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
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| ISSN: | 0168-9002 |
| Published: |
Elsevier BV
2025
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa68754 |
| Abstract: |
This paper describes the ALPHA-2 apparatus, used at the CERN Antiproton Decelerator facility for the study of trapped antihydrogen atoms. Details of both the construction and performance are included. Prominence is given to both the new and the improved features, with respect to the original ALPHA assembly, of the apparatus including a stand-alone antiproton catching trap, the traps used to mix antiparticles to produce the anti-atoms, the magnetic atom trap used to hold some of them, and access for laser light to facilitate excitation of the antihydrogen 1-2 and 1-2 transitions. |
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| Keywords: |
Antihydrogen; Antiprotons; Catching trap; Positrons; Neutral atom trap; Lasers; Microwaves; Silicon vertex detector |
| College: |
Faculty of Science and Engineering |
| Funders: |
Our work has been supported by a number of funding agencies. We are grateful to: the European Research Council through its Advanced Programme (JSH); CNPq and FAPERJ and RENAFAE (Brazil); NSERC, CFI, NRC/TRIUMF and EHPDS/EHDRS (Canada); FNU (Nice center); Carlsberg Foundation (Denmark); ISF (Israel); STFC, EPSRC, the Royal Society and the Leverhulme Trust (UK); DOE and NSF (USA) and VR (Sweden). |
| Start Page: |
170194 |