Positron accumulation in the GBAR experiment
Positron accumulation in the GBAR experiment
复制标题
GBAR 实验中的正电子积累
DOI:
10.1016/j.nima.2022.167263
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Charlton M. et al.
中科院分区:
文献类型:
--
作者:
Blumer P.;Charlton M. et al.
We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discuss its performance. The overall goal of the GBAR experiment is to measure the acceleration of the neutral antihydrogen (H¯) atom in the terrestrial gravitational field by neutralising a positive antihydrogen ion (H¯+), which has been cooled to a low temperature, and observing the subsequent H¯ annihilation following free fall. To produce one H¯+ ion, about 1 0 10 positrons, efficiently converted into positronium (Ps), together with about 1 0 7 antiprotons (p¯), are required. The positrons, produced from an electron linac-based system, are accumulated first in the BGT whereafter they are stacked in the ultra-high vacuum HFT, where we have been able to trap 1.4 (2)× 10 9 positrons in 1100 s.
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DOI:
10.1016/j.nimb.2015.08.097
发表时间:
2015
影响因子:
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影响因子:
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发表时间:
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影响因子:
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发表时间:
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影响因子:
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