Details
| Original language | English |
|---|---|
| Pages (from-to) | 3055-3108 |
| Number of pages | 54 |
| Journal | European Physical Journal: Special Topics |
| Volume | 224 |
| Issue number | 16 |
| Publication status | Published - 23 Nov 2015 |
Abstract
The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing the magnetic moments of the proton and the antiproton with high precision. Using single particles in a Penning trap, the proton/antiproton g-factors, i.e. the magnetic moment in units of the nuclear magneton, are determined by measuring the respective ratio of the spin-precession frequency to the cyclotron frequency. The spin precession frequency is measured by non-destructive detection of spin quantum transitions using the continuous Stern-Gerlach effect, and the cyclotron frequency is determined from the particle*s motional eigenfrequencies in the Penning trap using the invariance theorem. By application of the double Penning-trap method we expect that in our measurements a fractional precision of δg/g 10−9 can be achieved. The successful application of this method to the antiproton will consist a factor 1000 improvement in the fractional precision of its magnetic moment. The BASE collaboration has constructed and commissioned a new experiment at the Antiproton Decelerator (AD) of CERN. This article describes and summarizes the physical and technical aspects of this new experiment.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: European Physical Journal: Special Topics, Vol. 224, No. 16, 23.11.2015, p. 3055-3108.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - BASE – The Baryon Antibaryon Symmetry Experiment
AU - Smorra, C.
AU - Blaum, K.
AU - Bojtar, L.
AU - Borchert, M.
AU - Franke, K. A.
AU - Higuchi, T.
AU - Leefer, N.
AU - Nagahama, H.
AU - Matsuda, Y.
AU - Mooser, A.
AU - Niemann, M.
AU - Ospelkaus, C.
AU - Quint, W.
AU - Schneider, G.
AU - Sellner, S.
AU - Tanaka, T.
AU - Van Gorp, S.
AU - Walz, J.
AU - Yamazaki, Y.
AU - Ulmer, S.
PY - 2015/11/23
Y1 - 2015/11/23
N2 - The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing the magnetic moments of the proton and the antiproton with high precision. Using single particles in a Penning trap, the proton/antiproton g-factors, i.e. the magnetic moment in units of the nuclear magneton, are determined by measuring the respective ratio of the spin-precession frequency to the cyclotron frequency. The spin precession frequency is measured by non-destructive detection of spin quantum transitions using the continuous Stern-Gerlach effect, and the cyclotron frequency is determined from the particle*s motional eigenfrequencies in the Penning trap using the invariance theorem. By application of the double Penning-trap method we expect that in our measurements a fractional precision of δg/g 10−9 can be achieved. The successful application of this method to the antiproton will consist a factor 1000 improvement in the fractional precision of its magnetic moment. The BASE collaboration has constructed and commissioned a new experiment at the Antiproton Decelerator (AD) of CERN. This article describes and summarizes the physical and technical aspects of this new experiment.
AB - The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing the magnetic moments of the proton and the antiproton with high precision. Using single particles in a Penning trap, the proton/antiproton g-factors, i.e. the magnetic moment in units of the nuclear magneton, are determined by measuring the respective ratio of the spin-precession frequency to the cyclotron frequency. The spin precession frequency is measured by non-destructive detection of spin quantum transitions using the continuous Stern-Gerlach effect, and the cyclotron frequency is determined from the particle*s motional eigenfrequencies in the Penning trap using the invariance theorem. By application of the double Penning-trap method we expect that in our measurements a fractional precision of δg/g 10−9 can be achieved. The successful application of this method to the antiproton will consist a factor 1000 improvement in the fractional precision of its magnetic moment. The BASE collaboration has constructed and commissioned a new experiment at the Antiproton Decelerator (AD) of CERN. This article describes and summarizes the physical and technical aspects of this new experiment.
UR - http://www.scopus.com/inward/record.url?scp=84947940304&partnerID=8YFLogxK
U2 - 10.1140/epjst/e2015-02607-4
DO - 10.1140/epjst/e2015-02607-4
M3 - Review article
AN - SCOPUS:84947940304
VL - 224
SP - 3055
EP - 3108
JO - European Physical Journal: Special Topics
JF - European Physical Journal: Special Topics
SN - 1951-6355
IS - 16
ER -